{"title":"Meters \u0026 Pens – pH \u0026 EC Testing","description":"\u003ch2 data-pm-slice=\"1 1 []\" style=\"text-align: center;\"\u003e\n\u003cspan\u003e\u003cstrong\u003eTest It. Trust It.\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-pm-slice=\"1 1 []\" style=\"text-align: center;\"\u003e\u003cspan\u003eDon’t guess your grow - know it.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e\u003cstrong\u003eThe Brains of Your Hydro System\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eAccurate readings = no nutrient burn, no deficiencies, and no “what happened to my plants?” These meters and pens are the unsung heroes of hydroponics. Stay sharp, stay calibrated.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eNeed to recalibrate? Jump over to \u003c\/span\u003e\u003ca href=\"https:\/\/www.thegrowguys.com.au\/collections\/ph-control-calibration-ph-ec\" title=\" pH Control \u0026amp; Calibration – pH \u0026amp; EC\"\u003e\u003cspan\u003epH Control \u0026amp; Calibration\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e to stay accurate.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"ph-pen-by-bluelab","title":"Bluelab pH Pen by Bluelab — Waterproof pH \u0026 Temperature Meter for Hydroponics","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n  \u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab pH Pen is a waterproof, pocket-sized pH and temperature meter built for growers who check their reservoir every single day. It reads pH across the full 0.0–14.0 range to ±0.1 accuracy with automatic temperature compensation, calibrates to two reference points for maximum precision, and floats if you drop it in the res. One AAA battery, one year warranty, made in New Zealand by one of the most trusted names in hydroponics measurement.\u003c\/p\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e±0.1 pH Accuracy\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eTight enough to catch the shifts that trigger nutrient lockout before your plants feel it.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAuto Temperature Compensation\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH readings adjust automatically for water temperature — no manual correction needed.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eWaterproof \u0026amp; Floats\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFully waterproof and buoyant. Drop it in the res during a busy feed and fish it back out.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTwo-Point Calibration\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCalibrate to two reference points for the kind of accuracy you can trust across the full pH range.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n    \u003cdiv\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eBluelab\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Measurement Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.0–14.0\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±0.1\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C–50°C\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Compensation\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAutomatic\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eTwo-point\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWaterproof\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eYes — floats\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eAuto-Off\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eYes\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e1x AAA (included)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e1 year\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eMade in New Zealand\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n    \u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrower Tip\u003c\/strong\u003e\n    \u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n      \u003cli\u003eCalibrate at least once a week — pH probes drift over time and a poorly calibrated pen is worse than no pen at all. Use pH 7.0 buffer first, then pH 4.0 for a full two-point calibration.\u003c\/li\u003e\n      \u003cli\u003eAlways rinse the probe with clean water before dipping into a new solution. Cross-contaminating your nutrient solution with calibration buffer will throw off readings.\u003c\/li\u003e\n      \u003cli\u003eStore the probe in Bluelab Probe Care KCI storage solution when not in use — keeping the probe hydrated extends its lifespan significantly.\u003c\/li\u003e\n      \u003cli\u003eCheck pH daily during peak feeding cycles, particularly in DWC and NFT systems where pH can shift fast between feeds.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\n  \u003cdiv\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 0.875rem; padding: 0.75rem 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 0.0625rem;\"\u003e1\u003c\/span\u003e\n      \u003cdiv\u003eCalibrate before first use and at least weekly thereafter. Add pH 7.0 buffer solution to a clean cup, dip the probe, and press the calibration button. Repeat with pH 4.0 buffer to complete the two-point calibration.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 0.875rem; padding: 0.75rem 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 0.0625rem;\"\u003e2\u003c\/span\u003e\n      \u003cdiv\u003eRinse the probe tip with clean water, then dip it into your nutrient solution or reservoir. Wait a few seconds for the reading to stabilise on screen.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 0.875rem; padding: 0.75rem 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 0.0625rem;\"\u003e3\u003c\/span\u003e\n      \u003cdiv\u003eRecord both pH and temperature. Target 5.5–6.2 for hydroponic and coco systems, 6.0–7.0 for soil. If pH is out of range, adjust with pH Up or Down before watering.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 0.875rem; padding: 0.75rem 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 0.0625rem;\"\u003e4\u003c\/span\u003e\n      \u003cdiv\u003eRinse the probe with clean water after each use. Never wipe it dry — patting gently with a damp cloth is fine, but friction can scratch the probe membrane.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 0.875rem; padding: 0.75rem 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 0.0625rem;\"\u003e5\u003c\/span\u003e\n      \u003cdiv\u003eStore the probe in KCI storage solution when not in use — not tap water, not calibration buffer. Keeping it hydrated extends probe life and maintains calibration accuracy between sessions.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n    \u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab Conductivity Pen\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCheck EC alongside pH for complete control over nutrient strength and uptake at every feed.\u003c\/p\u003e\n    \u003c\/a\u003e\n    \u003ca href=\"\/collections\/hydroponic-nutrients\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eHydroponic Nutrients\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEvery nutrient mix needs a pH check before it hits your plants. Keep the pen close.\u003c\/p\u003e\n    \u003c\/a\u003e\n    \u003ca href=\"\/collections\/environmental-monitors\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eAll Environmental Monitors\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eBrowse the full range of Bluelab and other measurement tools for complete grow room monitoring.\u003c\/p\u003e\n    \u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate the Bluelab pH Pen?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eCalibrate at least once a week under normal use. If you're checking solution multiple times daily, or if readings start looking inconsistent, calibrate more frequently. A drifted probe gives you false confidence — if you're not calibrating regularly, you may as well be guessing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat calibration solutions do I need?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYou need pH 7.0 buffer solution and pH 4.0 buffer solution for a full two-point calibration. Always calibrate to pH 7.0 first, then pH 4.0. Bluelab calibration solutions are specifically formulated for Bluelab instruments and are the recommended choice.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the Bluelab pH Pen fully waterproof?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The Bluelab pH Pen is fully waterproof and will float if dropped in your reservoir. It's designed for use in wet hydroponic environments where brief submersion is a real possibility.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat does automatic temperature compensation mean?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003epH readings are affected by water temperature — the same solution reads differently at 18°C versus 28°C. Automatic temperature compensation (ATC) means the pen detects the water temperature in real time and adjusts its pH reading accordingly. You get an accurate pH reading regardless of solution temperature without any manual correction.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat pH range should I target in hydroponics?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eFor most hydroponic systems and coco coir, target 5.5–6.2 pH. For soil growing, 6.0–7.0 is generally the right window. Staying within these ranges keeps macro and micronutrients available for uptake — stray too far in either direction and you start seeing deficiency symptoms even when nutrients are present in solution.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long does the battery last?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBattery life varies with usage frequency, but the auto-off function activates after a period of inactivity to extend battery life significantly. One AAA battery typically lasts several months under regular daily use. A replacement AAA battery is available at any supermarket or hardware store.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n    \u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eYour Reservoir Deserves Accurate pH\u003c\/h2\u003e\n    \u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eBluelab pH Pen in stock now — made in New Zealand, backed by a 1-year warranty. Free shipping on orders over $499*\u003c\/p\u003e\n    \u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n      \u003cbutton id=\"btn-add-to-cart\" style=\"background: #4caf50 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n      \u003ca href=\"\/collections\/bluelab-1\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Bluelab\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('49928107327786', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#388e3c';\n      setTimeout(function() { btn.textContent = 'Add to Cart'; btn.style.background = '#4caf50'; }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() { btn.textContent = 'Add to Cart'; btn.style.background = '#4caf50'; }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":49928107327786,"sku":"BLL-METER-PH-PEN","price":149.99,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Bluelab-pH-Pen-by-Bluelab-Waterproof-pH-Temperature-Meter-for-Hydroponics.webp?v=1776901310"},{"product_id":"complete-ph-kit-by-hy-gen","title":"Complete pH Kit by Hy-gen","description":"\u003cp style=\"text-align: center;\"\u003eHY-GEN® COMPLETE pH KIT is an easy and accurate way to keep track of the nutrient solution pH. The kit gives the added ability to adjust your pH using the pH UP and pH DOWN solutions provided. Adjusting the pH is quite easy and after some time and experience it becomes an art as you start to learn more about your plants and growing system.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThe concentrated indicator solution allows you to obtain a reading by using just\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eone drop\u003cspan\u003e \u003c\/span\u003e\u003c\/em\u003ein the test tube provided. The calibrated colour chart provided helps test your pH to within 0.5 of a pH unit. Testing and adjusting your nutrient solution regularly will ensure your plants are healthy and happy.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eTesting and adjusting the nutrient solution pH is made easy with a HY-GEN® Complete pH Kit. The kit comes supplied with a test tube, 1mL transfer pipette, 150mL pH Up, 150mL pH Down, colour chart and concentrated indicator solution. Testing only requires one drop of indicator.\u003c\/p\u003e","brand":"HY-GEN","offers":[{"title":"Default Title","offer_id":49937428873514,"sku":"TESHYG015","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Complete-pH-Kit-by-Hy-gen.jpg?v=1747800630"},{"product_id":"ph-test-kit-by-hy-gen","title":"pH Test Kit by Hy-gen","description":"\u003cp style=\"text-align: center;\"\u003eIn hydroponics ‘pH’ is an extremely important factor. The pH is a scientific term used to describe the amount of acidity or alkalinity in a nutrient solution. If not monitored and adjusted regularly plants can become either weak or die.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003epH is expressed as a series of numbers which represent degrees of acidity or alkalinity. The range used is usually between 1 and 14. Pure water has a neutral pH of 7. Values from 1 to 7 are degrees of acidity whereas 7 to 14 are degrees of alkalinity. The nutrient solution should always be kept slightly acidic and typically in a range between 5.8 to 6.5 which is suitable for most plants.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eNutrients will be more readily available for adsorption once the pH is set to the optimum range, therefore maximising their uptake. If the pH is too high or too low pH it can interfere with the absorption of important nutrients such as iron, calcium, magnesium, etc. It’s essential that growers monitor and maintain a stable pH to make sure that the plant roots are healthy.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eTesting the nutrient solution pH is made easy with a HY-GEN\u003csup\u003e®\u003cspan\u003e \u003c\/span\u003e\u003c\/sup\u003epH Test Kit. The kit comes supplied with a test tube, colour chart and concentrated indicator solution. Testing only requires\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eone drop\u003cspan\u003e \u003c\/span\u003e\u003c\/em\u003eof indicator.\u003c\/p\u003e","brand":"HY-GEN","offers":[{"title":"Default Title","offer_id":49937449550122,"sku":null,"price":13.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Test-Kit-by-Hy-gen.png?v=1747800631"},{"product_id":"az-waterproof-ph-meter-pen-with-atc","title":"pH meter Pen with ATC by AZ","description":"\u003cp style=\"text-align: center;\"\u003eAZ Waterproof pH pens raise the bar in ease of use, reliability, function and price point. AZ meters provide a big IP65 LCD screen with dual pH and temperature display. Wide pH measuring range from 0 to 14 and a temperature range of -5°C to +60°C. Waterproof IP65 keypad with simple one touch auto calibration. Also includes a hold button to freeze current readings in low visibility. ATC (auto temperature compensation) ensures accurate readings in all climates. Auto off function maximizes battery life.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: center;\"\u003eLow cost pH pen\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eBig LCD dual display Temp. \u0026amp; pH value with ATC\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eOne touch for auto-calibration\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eWaterproof housing meets IP65 rating\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eAutomatic buffer recognition to avoid errors during calibration\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AZ","offers":[{"title":"Default Title","offer_id":50005381873962,"sku":"AZ-METER-PH-PEN-8685","price":80.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-meter-Pen-with-ATC-by-AZ.jpg?v=1747800652"},{"product_id":"az-waterproof-ec-tds-meter-pen","title":"EC \u0026 TDS meter Pen by AZ","description":"\u003cp style=\"text-align: center;\"\u003eAZ Waterproof EC pens raise the bar in ease of use, reliability, function and price point. AZ meters provide a big IP65 LCD screen with dual EC and temperature display. Wide measuring range from 0-9999ppm and a temperature range of -5°C to +60°C. Waterproof IP65 keypad with simple calibration. Also includes a hold button to freeze current readings in low visibility. ATC (auto temperature compensation) ensures accurate readings in all climates. Auto off function maximizes battery life.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: center;\"\u003eWide measuring range up to 160mS\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eDual display Temp. \u0026amp; Conductivity or TDS with ATC\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eWater proof IP65 membrane keypad\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eLow cost design with high accuracy\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eQuick response and easy to calibrate\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eAdjustable TDS factor from 0.3 to 1.0\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eAuto power off\u003c\/li\u003e\n\u003cli style=\"text-align: center;\"\u003eHold function to freeze current measurement.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AZ","offers":[{"title":"Default Title","offer_id":50005393932586,"sku":"AZ-METER-EC-PEN-8362","price":74.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/EC-TDS-meter-Pen-by-AZ.jpg?v=1747800653"},{"product_id":"hydroponic-meter-pro-kit-all-in-one-ph-pen-interchangeable-probe","title":"Hydroponic Meter Pro Kit by AC Infinity — All-in-One pH, EC, TDS \u0026 Temp Meter","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n  \u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe AC Infinity Hydroponic Meter Pro Kit is an all-in-one water quality testing kit that measures pH, EC, TDS, temperature, and salinity from a single device with a replaceable probe. Rather than buying and calibrating multiple separate pens, this kit consolidates everything into one unit with an interchangeable probe system — letting you swap probe heads for different measurement types without replacing the meter body. Built for growers who want accurate, comprehensive water data without the clutter of five different devices on the bench.\u003c\/p\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAll-in-One Measurement\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH, EC, TDS, temperature, and salinity from one device — comprehensive water quality data without juggling multiple meters.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eInterchangeable Probe System\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eReplaceable probe heads extend the life of the meter body — when a probe wears out, swap the head rather than replacing the whole unit.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAutomatic Temperature Compensation\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBuilt-in ATC adjusts pH and EC readings for solution temperature automatically — accurate readings regardless of whether your nutrient solution is warm or cold.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eKit Includes Calibration Solutions\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eComes with calibration solutions for pH and EC so the kit is ready to calibrate and use straight out of the box — no additional accessories required to get started.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n    \u003cdiv\u003e\u003cstrong\u003eMeasurements\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003epH, EC, TDS, Temperature, Salinity\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.0 – 14.0 pH\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eEC Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0 – 20.00 mS\/cm\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTDS Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0 – 9999 ppm\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0 – 60°C\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eProbe System\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eInterchangeable \/ replaceable probe heads\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eATC\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eYes — automatic temperature compensation\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eMeter, probe, calibration solutions, case\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAC Infinity\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eACI-MTR-PRO-KIT\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n    \u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrower Tip\u003c\/strong\u003e\n    \u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n      \u003cli\u003eCalibrate the pH probe every 7–14 days during active grows — a drifting pH probe gives you confident but inaccurate readings, which is worse than knowing the reading might be off.\u003c\/li\u003e\n      \u003cli\u003eRinse the probe with clean water between calibration solutions and between the calibration solution and your nutrient solution to avoid carryover contamination.\u003c\/li\u003e\n      \u003cli\u003eStore the probe tip in KCl storage solution between uses — a dry probe degrades fast and loses accuracy before most growers notice. Never store dry.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\n  \u003cdiv\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eAttach the probe\u003c\/strong\u003e — Connect the appropriate probe head to the meter body for your measurement type. The kit includes a pH\/EC\/TDS interchangeable probe.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate the pH probe\u003c\/strong\u003e — Using the included pH 4.0 and 7.0 calibration solutions, perform a two-point calibration. Rinse between solutions and before testing.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate EC if needed\u003c\/strong\u003e — Using the included EC calibration solution, calibrate the conductivity measurement before testing nutrient solutions.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eSubmerge and read\u003c\/strong\u003e — Rinse the probe with clean water, submerge in your nutrient solution or reservoir sample, and wait for the reading to stabilise before recording.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eStore correctly\u003c\/strong\u003e — After use, rinse the probe with clean water and store the tip in KCl probe storage solution. Never store a pH probe dry.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem; margin-top: 2rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n    \u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Control \u0026amp; Calibration\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCalibration buffer solutions, pH Up, and pH Down — everything needed to use and maintain the meter properly.\u003c\/p\u003e\n    \u003c\/a\u003e\n    \u003ca href=\"\/collections\/hydroponic-nutrients\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eNutrients\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThis meter is designed to be used alongside a nutrient programme — accurate pH and EC measurement makes every feed more effective.\u003c\/p\u003e\n    \u003c\/a\u003e\n    \u003ca href=\"\/collections\/ac-infinity\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eAll AC Infinity Products\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eGrow tools, fans, controllers, and accessories from AC Infinity for serious indoor growers.\u003c\/p\u003e\n    \u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs this better than buying separate pH and EC pens?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, for most growers. A single calibrated device with an interchangeable probe reduces bench clutter, simplifies maintenance, and eliminates the need to manage multiple calibration schedules. Dedicated single-function pens from specialist brands like Bluelab may offer higher precision at the top end — but for the majority of growers, the Pro Kit covers every measurement they need reliably in one unit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I replace just the probe when it wears out?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The interchangeable probe system means you replace the probe head only — not the meter body. This significantly reduces the cost of long-term ownership compared to replacing a full single-function pen when the probe wears out.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it measure TDS in ppm?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The meter displays TDS in ppm alongside EC in mS\/cm. It supports both 500 and 700 conversion scales, making it compatible with most feeding charts regardless of which ppm scale they reference.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate the pH probe?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eEvery 7–14 days during active grows, or before any use if the meter has been sitting unused for more than a week. More frequent calibration is better than less — a drifting pH probe gives confident but incorrect readings, which is the worst kind of inaccuracy in a grow room.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the kit suitable for hydroponic and soil growing?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The meter works for testing nutrient solutions in hydroponic systems, reservoir water, runoff from soil and coco grows, tap and RO water quality, and any liquid solution where pH, EC, TDS, or temperature is relevant. The salinity measurement is particularly useful for monitoring certain recirculating systems.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n    \u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eFive Measurements. One Kit. One Probe.\u003c\/h2\u003e\n    \u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eAC Infinity Hydroponic Meter Pro Kit — pH, EC, TDS, temperature, and salinity in one all-in-one unit with a replaceable probe. Everything you need to know about your water, in one device.\u003c\/p\u003e\n    \u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n      \u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n      \u003ca href=\"\/collections\/ac-infinity\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eView All AC Infinity\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('50005421195562', 10), quantity: 1})\n    }).then(function(r){return r.json();}).then(function(data){\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart'; btn.style.background = '#2e5e2e';\n      setTimeout(function(){ btn.textContent = 'Add to Cart'; btn.style.background = '#b67317'; }, 2000);\n    }).catch(function(){\n      btn.textContent = 'Error — Try Again'; btn.style.background = '#c0392b';\n      setTimeout(function(){ btn.textContent = 'Add to Cart'; btn.style.background = '#b67317'; }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"AC Infinity","offers":[{"title":"Default Title","offer_id":50005421195562,"sku":"ACI-MTR-PRO-KIT","price":299.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Hydroponic-Meter-Pro-Kit-by-AC-Infinity-All-in-One-pH-EC-TDS-Temp-Meter.jpg?v=1776901345"},{"product_id":"truncheon-ec-by-bluelab","title":"Truncheon (EC) by Bluelab","description":"\u003ch2 data-pm-slice=\"1 1 []\" style=\"text-align: center;\"\u003e\n\u003cspan\u003e💧 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThe Indestructible EC Weapon for Hydro Heroes\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eIf you grow like a pro, you need gear that can keep up. The Bluelab Truncheon Nutrient Meter is built like a brick sh*thouse and fine-tuned for Hydroponics domination. Whether you're mixing your first batch or fine-tuning mid-bloom, this EC meter gives you rock-solid readings and zero fluff.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eSplash it. Drop it. Dunk it. This beast won’t quit. Trusted by serious growers worldwide - and proudly stocked by your mates at The Grow Guys.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🔹 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e📊 Measures EC, CF, PPM (500 \u0026amp; 700 scale)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔢 Reads up to 3.6 EC \/ 36 CF \/ 1800 ppm (500) \/ 2520 ppm (700)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔦 Bright LED readouts for easy checks\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e💪 Built tough — waterproof, drop-resistant, and long-form for deep res testing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🚪 No calibration needed — plug, dip, and go\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔩 Five-year warranty for long-term peace of mind\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🛠️ \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHow to Use It\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eJust dip the Truncheon into your solution and the LED indicators light up with your EC levels. Rinse after use and store it somewhere dry. No buttons, no settings - just accurate data with zero faff.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🌟 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eGrow Guys Tips\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eUse it every time you mix or top up your res. It's perfect for preventing salt build-up and keeping your nutes right in the sweet spot. Pair it with the Bluelab pH Pen and you’ll be running a pro-grade grow room.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🍼 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eHydro growers who take feeding seriously. Ideal for DWC, RDWC, flood and drain, coco, and more. If your plants drink it, measure it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e📦 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSpecs \u0026amp; Stuff\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul data-spread=\"false\" style=\"text-align: center;\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEC range: 0.2 to 3.6 EC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePPM: 140 to 2520 (700), 100 to 1800 (500)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCF range: 2 to 36\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFully waterproof\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAutomatic on\/off function\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNo calibration needed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMade in New Zealand\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e5-year warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🚀 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTough Gear. Clean Feeds. Better Yields.\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eAdd the Truncheon to your grow toolkit and feed with confidence. Big \u003cem\u003eFlowers\u003c\/em\u003e start with balanced nutes - this beast makes sure they get ‘em.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":50261788950826,"sku":"BLUELAB-TRUNCHEON","price":180.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Truncheon-EC-by-Bluelab.jpg?v=1750058622"},{"product_id":"one-pen-by-bluelab-1","title":"OnePen by Bluelab — pH, EC \u0026 Temperature in One Meter","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab OnePen measures pH, conductivity (EC) and temperature from a single probe — one dip covers the whole reservoir check. It reads to two decimal places with ±0.05 pH accuracy, shows two parameters on screen at once, syncs to the Edenic app over Bluetooth, and when the probe eventually wears out you replace the probe, not the pen. IP68 waterproof and built for real grow rooms.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eThree Readings, One Probe\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH, EC and temperature from a single probe tip, with dual on-screen display — cycle between pH\/Temp, EC\/Temp and EC\/pH modes with one button.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eLab-Grade Accuracy\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003e±0.05 pH and ±0.1 EC with readings to two decimal places — precise enough to catch drift before your plants do.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eBluetooth + Edenic App\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003ePairs with Bluelab's free Edenic app to record, store, categorise and share every measurement — your feed log builds itself.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReplaceable Probe\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eProbe health and calibration indicators on screen, and when the probe ages out you swap in a new one instead of binning a $395 meter.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH, conductivity (EC) and temperature\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH:\u003c\/strong\u003e 0.0 – 14.0 pH, ±0.05 at 25°C, two-decimal readings\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConductivity:\u003c\/strong\u003e 0 – 10.0 EC, ±0.1 EC — displays EC, CF, ppm 500, ppm 700 or mS\/cm\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 0 – 50°C, ±1°C, °C or °F, automatic temperature compensation\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eModes:\u003c\/strong\u003e pH\/Temp, EC\/Temp, EC\/pH, plus mV\/Temp via Edenic\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e Replaceable — double-junction pH, titanium EC electrodes (Bluelab OnePen Replacement Probe)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Bluetooth to the Bluelab Edenic app\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIndicators:\u003c\/strong\u003e Calibration status, probe health, probe replacement, low battery\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof Rating:\u003c\/strong\u003e IP68 dustproof and waterproof\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e High-contrast backlit LCD, dual readout, auto-off to save battery\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 2 x AAA batteries\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 years pen \/ 6 months probe\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Hydrate the Bulb, Not the Electrodes\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eBefore first calibration, hydrate the pH glass bulb for 24 hours: a few drops of KCl storage solution on the sponge inside the storage cap, cap fitted. A dehydrated bulb drifts, reads stuck near pH 7 and can break.\u003c\/li\u003e\n\u003cli\u003eDo not soak the titanium EC electrodes in KCl for any length of time — Bluelab warns against it. The cap-sponge method hydrates the bulb without bathing the electrodes.\u003c\/li\u003e\n\u003cli\u003eNever use RO, distilled or deionised water on the probe, and clean with Bluelab pH Probe Cleaner only — Bluelab's Conductivity Probe Cleaner is not compatible with the OnePen.\u003c\/li\u003e\n\u003cli\u003eThe calibration check mark flashes after 30 days as your recalibration reminder — keep fresh pH 7.0 and 4.0 sachets on hand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use — First Use Setup\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHydrate for 24 hours.\u003c\/strong\u003e Place a few drops of KCl storage solution on the sponge inside the storage cap, fit the cap and leave for 24 hours so the glass bulb is active. Never use RO, distilled or deionised water, and don't soak the titanium electrodes in KCl.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCalibrate pH — always 7.0 first.\u003c\/strong\u003e Press O to turn on, select pH\/Temp mode with the CAL button, place the probe in fresh pH 7.0 solution and hold CAL until \"CAL\" displays. Wait for \"PASS PH7\".\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThen pH 4.0 or 10.0.\u003c\/strong\u003e Rinse the probe in fresh tap water, shake off the excess, place it in pH 4.0 (or 10.0) solution and repeat. Both points are required — the check mark and calibrated-point icons confirm success. EC is factory calibrated.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMeasure.\u003c\/strong\u003e Dip the probe into your nutrient solution or reservoir, wait for the readings to stabilise, and cycle modes with the CAL button to see pH, EC and temperature. Pair with the Edenic app to log every reading automatically.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStore wet.\u003c\/strong\u003e Rinse in fresh tap water after use and refit the storage cap. Top up the cap sponge with a few drops of KCl regularly so the bulb never dries out.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/bluelab-onepen-replacement-probe\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eOnePen Replacement Probe\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eKeep a spare on the shelf — probes average around 18 months of life, and a swap restores full accuracy in minutes.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; pH Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH 7.0 and 4.0 sachets, KCl storage solution and pH adjusters — everything the OnePen needs to stay accurate.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/wi-fi-guardian-by-bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab Wi-Fi Guardian\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eComplement manual pen checks with 24\/7 continuous monitoring and remote alerts on the same parameters.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the OnePen measure pH and EC at the same time?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The dual display shows two parameters at once — cycle between pH\/Temp, EC\/Temp and EC\/pH modes with the CAL button, all from a single probe dip.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the Bluelab OnePen waterproof?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It carries an IP68 dustproof and waterproof rating, built for wet grow rooms and reservoir work.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to soak the probe before first use?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Bluelab recommends hydrating the pH glass bulb for 24 hours before initial calibration — a few drops of KCl storage solution on the sponge inside the storage cap. Don't soak the titanium EC electrodes in KCl, and never use RO, distilled or deionised water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate the OnePen?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe pen tracks it for you — the calibration check mark flashes 30 days after your last successful pH calibration. Always calibrate pH 7.0 first, then 4.0 or 10.0; EC is factory calibrated.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the OnePen read in ppm as well as EC?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Conductivity can be displayed as EC, CF, ppm 500, ppm 700 or mS\/cm, so it matches whichever scale your feed chart uses.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I replace just the probe rather than buying a new pen?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The OnePen uses the genuine Bluelab OnePen Replacement Probe — a tool-free swap that restores pH, EC and temperature accuracy. Note the pen only accepts genuine Bluelab probes; imitations are rejected with a \"PROBE INVALID\" error.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it connect to my phone?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The OnePen pairs over Bluetooth with Bluelab's free Edenic app to record, store, categorise and share measurements — handy for tracking reservoir trends across a full crop cycle.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eOne Pen. Three Readings. No Compromises.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eThe full reservoir check in one dip — shipped fast Australia-wide.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/bluelab-1\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eView All Bluelab\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('50265391137066', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":50265391137066,"sku":"BL-MTR-PEN-ONE","price":395.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/OnePen-by-Bluelab-pH-EC-Temperature-in-One-Meter.png?v=1787635165"},{"product_id":"wi-fi-guardian-by-bluelab","title":"Wi-Fi Guardian by Bluelab — Remote pH, EC \u0026 Temperature Monitor","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab Wi-Fi Guardian is a continuous monitoring unit for growers who need eyes on their reservoir around the clock. It measures pH, EC\/conductivity, and temperature simultaneously and pushes live data to the Bluelab Connect app — so you can track trends, get alerts, and act before a drift becomes a problem, whether you are standing in the grow room or not.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eContinuous pH Monitoring\u003c\/strong\u003e \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eTracks pH around the clock so drift is caught immediately rather than at your next manual check.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eEC \u0026amp; Conductivity Tracking\u003c\/strong\u003e \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eMonitors nutrient solution strength in real time so you always know what your plants are being fed.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eRemote Access via Wi-Fi\u003c\/strong\u003e \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eConnects to the Bluelab Connect app for live data, historical logs, and customisable push alerts to your phone.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTemperature Measurement\u003c\/strong\u003e \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eReads solution or ambient temperature alongside pH and EC — everything you need in one wall-mountable unit.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eMeasurements\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003epH, EC\/Conductivity, Temperature\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.0 – 14.0 pH\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eEC Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.0 – 10.0 EC (0 – 100 CF)\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C – 50°C (32°F – 122°F)\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eWi-Fi 2.4 GHz, Bluelab Connect App\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eData Logging\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eYes — cloud-based via Bluelab Connect\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eAlerts\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eCustomisable high\/low push notifications\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAC adapter (included)\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eSG-S1358\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrower Tip\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eCalibrate your pH probe weekly using Bluelab pH 4.0 and 7.0 solutions — a calibrated probe is the difference between reliable data and guessing.\u003c\/li\u003e\n\u003cli\u003eSet your app alerts to trigger 0.3 pH units outside your target range so you get early warning without constant phone-checking.\u003c\/li\u003e\n\u003cli\u003eStore the probe tip in Bluelab KCl probe storage solution when not submerged — a dry probe degrades fast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibrate the pH probe\u003c\/strong\u003e — Before first use, calibrate using Bluelab pH 4.0 then 7.0 solutions. The Guardian walks you through it step by step.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSubmerge the probe\u003c\/strong\u003e — Place the pH probe into your nutrient reservoir and secure the unit in a stable position within cable reach.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConnect to Wi-Fi\u003c\/strong\u003e — Open the Bluelab Connect app and follow the setup wizard to connect the Guardian to your 2.4 GHz network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSet alert thresholds\u003c\/strong\u003e — Program your high and low limits for pH, EC, and temperature in the app to match your crop's target parameters.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMonitor remotely\u003c\/strong\u003e — Check live readings and historical trends from anywhere via the Bluelab Connect dashboard on your phone.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaintain the probe\u003c\/strong\u003e — Recalibrate weekly and store the probe tip in KCl storage solution when not in use to extend its working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem; margin-top: 2rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/bluelab-1\/products\/ph-calibration-solution-by-bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab pH Calibration Solution\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH 4.0 and 7.0 buffer solutions for weekly calibration. Non-negotiable if you want accurate readings.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/collections\/bluelab-1\/products\/truncheon-ec-by-bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab Truncheon EC Meter\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCross-check your reservoir EC manually with the industry-standard Truncheon when you want a second opinion.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Control \u0026amp; Calibration\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eBrowse pH Up, pH Down, and calibration essentials to complete your water control setup.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the Wi-Fi Guardian work with 5 GHz Wi-Fi?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The Wi-Fi Guardian operates on 2.4 GHz networks only. Make sure your router has a 2.4 GHz band active and connect to that band during setup.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I monitor multiple grow rooms from one Bluelab Connect account?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The Bluelab Connect app supports multiple devices under a single account, making it easy to manage several reservoirs or grow spaces from one dashboard.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it keep working if my internet goes down?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — remote alerts, logging, and app access all require an active internet connection. The unit will continue displaying live readings locally if Wi-Fi drops, but cloud functions pause until connectivity is restored.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long does the pH probe last?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eWith regular calibration and proper storage in KCl probe care solution, Bluelab probes typically last 12–18 months. Replacement probes are available separately and use a standard BNC connection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the Bluelab Connect app free?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The Bluelab Connect app is free to download and use. There is no subscription required to access monitoring, alerts, or data logging features.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eKnow What Is Happening In Your Reservoir 24\/7\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eReal-time pH, EC, and temperature — from anywhere. Stop guessing, start growing with confidence.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #4caf50 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e \u003ca href=\"\/collections\/bluelab-1\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eView All Bluelab\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n  \n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('50265401819434', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#388e3c';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":50265401819434,"sku":"SG-S1358","price":549.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Wi-Fi-Guardian-by-Bluelab-Remote-pH-EC-Temperature-Monitor.png?v=1776901527"},{"product_id":"ph-meter-by-hm-digital","title":"pH meter by HM Digital","description":"\u003ch2 data-pm-slice=\"1 1 []\" style=\"text-align: center;\"\u003e\n\u003cspan\u003e🌱 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eYour pH's New Best Mate\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eNeed to keep your pH in check without dropping a heap of cash? The PH-80 by HM Digital is the go-to tool for growers, fish tank fanatics, and spa lovers alike. It nails your pH and temp readings fast, easy, and without the faff. Plus, it comes factory calibrated and ready to rip straight out of the box.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🔹 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔥 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTwo-in-One\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e – Measures both pH and temperature with pinpoint accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🧪 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eEasy Peasy Calibration\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e – One-touch auto calibration means no fiddling or guesswork.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔢 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eBig Display Energy\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e – Large LCD shows both pH and temp at the same time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🛠️ \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHow to Use It\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003col data-spread=\"false\" start=\"1\" style=\"text-align: center;\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePop off the cap and dip the sensor in your nutrient mix, tank, or spa.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWait a few seconds – your pH and temp show up instantly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRinse and recap. Done.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eUse the included buffer powder to recalibrate when needed. Keep the probe happy with storage solution to get the most accurate readings, every time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🌟 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eGrow Guys Tips\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eKeep the electrode moist when stored – it ain’t a cactus.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eCalibrate monthly if you're using this daily. Don't trust your grow to an off reading – treat your meter right and it’ll return the love.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🧃 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eHydro heads, DWC diehards, aquarium legends, and even spa-day connoisseurs. Whether you’re running coco, soil, or full hydro – this little legend helps dial it all in.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e📦 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSpecs \u0026amp; Stuff\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul data-spread=\"false\" style=\"text-align: center;\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003epH Range: 0.0 – 14.0\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTemp Range: 1–55 °C \/ 32–130 °F\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAccuracy: ± 0.2 pH; ± 2% Temp\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eResolution: 0.1 pH \/ 0.1 °C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eElectrode: Glass sensor with reference tube\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCalibration: One-point digital auto-calibration (pH 7.0)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePower: 3 x LR44 batteries (included)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDimensions: 15.3 x 3.2 x 1.8 cm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWeight: 53.9g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIncludes: Cap, batteries, storage solution, and buffer powder\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🚀 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eChuck It in the Cart, pH Like a Pro\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eDon’t guess – test. This pH meter’s a no-brainer for any serious grower or water wizard. Ready to rock from day one. Grab it now and give your grow the TLC it deserves.\u003c\/span\u003e\u003c\/p\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":50377719677226,"sku":"HM-PH80","price":95.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-meter-by-HM-Digital.jpg?v=1752734096"},{"product_id":"pulse-multimedia-ec-mc-meter-by-bluelab","title":"Pulse Multimedia EC\/MC Meter by Bluelab - Bluetooth Soil Sensor","description":"\u003ch2 data-pm-slice=\"1 1 []\" style=\"text-align: center;\"\u003e\n\u003cspan\u003e🌿 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eKnow What Your Roots Know\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eNo more guessing games or finger-dip tests – the Bluelab Pulse Meter tells you exactly what's going on in the root zone. Moisture, EC, and temp readings all in one slick device, straight to your phone via Bluetooth. Deep probe, fast results, big grower energy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🔹 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔥 Instantly measures moisture, conductivity (EC), and temperature\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🧪 Rugged 8” stainless steel probes reach deeper into your media\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003e🔄 Pairs with the Bluelab Pulse app for live tracking and analysis\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🛠️ \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHow to Use It\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eJust plunge the probes into your growing media and tap the button – the Pulse does the rest. It gives quick visual LED alerts and syncs to the Bluelab Pulse app so you can log, compare, and tweak your grow without breaking a sweat.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eHeads up: Not suitable for chunky media like perlite or compressible stuff like rockwool.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🌟 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eGrow Guys Tips\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eWant the cleanest reads? Moisten your media before poking. And always insert the probe slowly – you’re checking roots, not making compost kebabs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🧓 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eSoil growers, coco heads, and hydro legends who need quick, accurate reads without pouring and praying. Whether you're running drip, flood and drain, or hand-watering, this meter keeps your root zone dialled in.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cspan\u003e📦 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSpecs \u0026amp; Stuff\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul data-spread=\"false\" style=\"text-align: center;\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMeasures: EC (0.0 – 5.0 EC), temperature (0°C – 60°C), moisture (0-100%)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProbe Length: 200mm stainless steel\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eConnectivity: Bluetooth via Bluelab Pulse app (iOS \u0026amp; Android)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCompatible Substrates: Soil, coco, other fine media\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNot suitable for: Perlite, Rockwool\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\n\u003cspan\u003e🚀 \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSmarter Roots, Bigger Fruits\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan\u003eDitch the guesswork and dial in your grow like a legend. Add the Pulse to your toolkit and start growing with confidence today!\u003c\/span\u003e\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":50399698813226,"sku":"BLPULSE","price":495.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Pulse-Multimedia-ECMC-Meter-by-Bluelab-Bluetooth-Soil-Sensor.png?v=1752734231"},{"product_id":"aqua-master-tools-p50-pro2-ph-temperature-meter","title":"Aqua Master Tools P50 Pro2 pH \u0026 Temperature Meter — IP67 Waterproof Pen Meter","description":"\u003c!-- ============================================================\n     AQUA MASTER TOOLS P50 Pro2 pH\/TEMP METER\n     The Grow Guys — Shopify Product Page\n     ============================================================\n\nPRODUCT TITLE:\nAqua Master Tools P50 Pro2 pH \u0026 Temperature Meter — IP67 Waterproof Pen Meter\n\nSHOPIFY FIELDS:\n  Title:         Aqua Master Tools P50 Pro2 pH \u0026 Temperature Meter — IP67 Waterproof Pen Meter\n  Product type:  pH \u0026 EC Meter\n  Vendor:        Aqua Master Tools\n  Collections:   Meters \u0026 Pens (pH \u0026 EC Testing), pH Control \u0026 Calibration\n  Tags:          aqua-master, aqua-master-tools, ph-meter, temperature-meter, pen-meter, waterproof, ip67, replaceable-electrode, 2-point-calibration, hydroponic-meter, p50-pro2\n  SKU:           AMT-METER-PH-P50PRO2\n\nSEO FIELDS:\n  Meta title (58 chars):   Aqua Master P50 Pro2 pH Meter | The Grow Guys\n  Meta description (156):  IP67 waterproof pH \u0026 temp pen meter with 2-point auto calibration, replaceable electrode \u0026 AAA batteries. Ships from Invermay, Tasmania.\n  URL slug:                aqua-master-tools-p50-pro2-ph-temperature-meter\n\nPRICING RECOMMENDATION:\n  Recommended price: $134.95 AUD\n  Reasoning: AU competitors (Aqua Gardening, Epping Hydroponics) retail the P50 Pro2 at $139.00.\n  Positioning at $134.95 keeps TGG competitive without margin damage. The original P50 Pro\n  (lesser model) sits at $110 at Green Genius — the Pro2 upgrade warrants the premium step-up.\n  Do not discount below $129.95.\n\n============================================================ --\u003e\n\n\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n  \u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003e\n    The Aqua Master Tools P50 Pro2 is a no-fuss, high-accuracy pH and temperature pen meter built for daily use in the grow room. Whether you're checking reservoir pH before a feed or confirming run-off temperature, this thing delivers a clear, reliable reading in seconds — IP67 waterproof, floatable, and powered by standard AAA batteries so you're never hunting for obscure button cells mid-grow. The Pro2 is the upgraded version of Aqua Master's popular P50 Pro, with a sharper black-and-white display, selectable 1 or 2 decimal precision, and a 30-day calibration reminder built right in.\n  \u003c\/p\u003e\n\n  \u003c!-- BENEFIT CARDS --\u003e\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eIP67 Waterproof + Floats\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFully submersible to 1 metre. Drop it in the reservoir and it floats back up — no fishing required.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReplaceable Electrode\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eWhen the probe wears out, swap it rather than bin the whole meter. Extends the lifespan significantly.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReadable Display\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBlack screen with white characters cuts glare in bright grow rooms. The original P50 Pro display was the main complaint — this fixes it.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAAA Batteries Included\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eStandard AAA cells instead of fiddly button batteries. Easier to source, longer run time, ready to go out of the box.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e2-Point Auto Calibration\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCalibrate to pH 4.0 and 7.0 buffer solutions. The meter walks you through it automatically — no manual maths involved.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e30-Day Calibration Reminder\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBuilt-in reminder prompts you to recalibrate after 30 days. Keeps readings honest without relying on memory.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.0 – 14.0 pH\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.1 pH or 0.01 pH (selectable)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±0.1 pH\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C – 50°C (32°F – 122°F)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.1°C (0.2°F)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±1.0°C\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemp. Compensation\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C – 50°C (automatic)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e2-point auto (pH 4.0 \u0026amp; 7.0)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eIP67 (floats if dropped)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eAuto Power-Off\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAfter 8 minutes\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e2 x 1.5V AAA batteries (included)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e230 x 43 x 43 mm\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e132 g\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e1 year (6 months on electrode)\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- TIP BOX --\u003e\n  \u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n    \u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrower Tips — Get the Most From Your P50 Pro2\u003c\/strong\u003e\n    \u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n      \u003cli\u003eStore the meter upright with KCl storage solution in the cap. A dry electrode drifts and wears out faster.\u003c\/li\u003e\n      \u003cli\u003eBefore first use, soak the tip in tap water for 12 hours to properly hydrate the glass membrane.\u003c\/li\u003e\n      \u003cli\u003eUse the 0.01 resolution setting when dialling in critical pH windows — 0.1 is fine for routine checks.\u003c\/li\u003e\n      \u003cli\u003eRecalibrate with fresh buffer solution at least once a month, or whenever the 30-day reminder triggers.\u003c\/li\u003e\n      \u003cli\u003eAlways rinse the electrode with distilled or RO water between measurements to avoid cross-contamination.\u003c\/li\u003e\n      \u003cli\u003eThe meter ships pre-calibrated, but calibrate it yourself before the first grow cycle reading for full accuracy.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- HOW TO USE --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use the P50 Pro2\u003c\/h2\u003e\n\n  \u003cdiv\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eHydrate the electrode (first use only)\u003c\/strong\u003e — Soak the tip in tap water for 12 hours before the very first measurement. Remove the protective cap and gently clean the electrode with distilled water, then dry it carefully.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate with buffer solutions\u003c\/strong\u003e — Press and hold the CAL button to enter calibration mode. Dip the meter into your pH 7.0 buffer first, wait for a stable reading, then confirm. Repeat with pH 4.0 buffer. The meter auto-recognises each solution and locks in the calibration points.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eTake your measurement\u003c\/strong\u003e — Press the On\/Off button to power up. Insert the meter upright into your nutrient solution or water sample, submerging to the marked line. Stir gently and wait a few seconds for the reading to stabilise on the display.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eSwitch between pH and temperature\u003c\/strong\u003e — Use the MODE button to toggle between the two readings on the display. The meter shows both parameters in sequence — no need for a separate thermometer.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eAdjust precision if needed\u003c\/strong\u003e — The P50 Pro2 lets you choose between 0.1 and 0.01 pH resolution. For quick routine checks, 0.1 is plenty. When you're dialling in a critical reservoir, switch to 0.01 for the extra decimal place.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eRinse and store correctly\u003c\/strong\u003e — After use, rinse the electrode with distilled or RO water and dry gently. Fill the protective cap with KCl storage solution before replacing it. Store the meter upright so the electrode tip stays immersed. The meter will power off automatically after 8 minutes if you forget.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- PAIRS WITH --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem; margin-top: 2rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\n    \u003ca href=\"\/products\/ph-4-buffer-solution-by-hy-gen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eHy-gen pH 4.0 Buffer Solution\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOne half of your 2-point calibration kit. Use this with the 7.0 buffer every 30 days to keep the P50 Pro2 reading accurately.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-7-buffer-solution-by-hy-gen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eHy-gen pH 7.0 Buffer Solution\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe neutral reference point for 2-point calibration. Always calibrate 7.0 first, then 4.0, for best accuracy across the grow range.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-up-and-down-by-growth-technology\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Up \u0026amp; Down by Growth Technology\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOnce your meter tells you where pH sits, these adjust it. Fast-acting and highly concentrated — a little goes a long way.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eEC Meters \u0026amp; Pens\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe P50 Pro2 covers pH and temp. Add an EC pen alongside it to nail nutrient strength — the two together give you the full picture.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between the P50 Pro and the P50 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe Pro2 adds three key upgrades over the original P50 Pro: AAA batteries instead of button cells (easier to replace, longer life), a black display with white characters for significantly better readability under grow lights, and selectable 1 or 2 decimal pH precision. It also includes a 30-day calibration reminder. The core measurement range and accuracy specs are the same.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the P50 Pro2 measure EC or PPM?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — the P50 Pro2 measures pH and temperature only. It does not read EC, PPM, or TDS. If you need EC alongside pH, look at the Aqua Master P110 Pro2 combo pen, which measures all three parameters in one device.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the P50 Pro2 suitable for measuring nutrient solution run-off?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — the P50 Pro2 works well for run-off pH checks. Collect your run-off sample in a container, dip the meter in, and read the result. Just make sure to rinse the electrode with distilled water between your reservoir reading and your run-off sample so you don't carry over contamination.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate the P50 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eAt minimum, calibrate once per month — the meter will remind you after 30 days. For critical grows or high-value crops, calibrating weekly is not overkill. pH electrodes drift gradually with use, and a miscalibrated meter is worse than no meter at all because it gives you false confidence.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I replace the electrode myself?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — the electrode on the P50 Pro2 is user-replaceable with no special tools required. This is one of the main reasons to choose an Aqua Master meter over cheaper alternatives that require you to bin the entire device when the probe wears out. Replacement electrodes are available separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat buffer solutions do I need to calibrate the P50 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYou need pH 4.0 and pH 7.0 buffer solutions for the 2-point calibration. These are sold separately — we stock Hy-gen and Bluelab calibration solutions in-store and online. Always use fresh buffer solution from a sealed bottle; used or old buffer gives inaccurate calibration points.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat warranty does the P50 Pro2 come with?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe meter itself is covered by a 1-year warranty against defects in materials and workmanship from the date of consumer purchase. The electrode carries a separate 6-month warranty. Warranty requires proof of purchase. Physical damage, dirt ingress from misuse, and damage from third-party parts or unauthorised repairs are not covered.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- CTA BLOCK --\u003e\n  \u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n    \u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eStop Guessing. Start Measuring.\u003c\/h2\u003e\n    \u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eThe P50 Pro2 is the meter growers keep coming back to — waterproof, readable, and built to last longer than a single season. Grab one and take pH out of the guesswork column for good.\u003c\/p\u003e\n    \u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n      \u003cbutton id=\"btn-add-to-cart\" style=\"background: #4caf50 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n      \u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eBrowse All pH \u0026amp; EC Meters\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('51379198492970', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#388e3c';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":51379198492970,"sku":"AMT-METER-PH-P50PRO2","price":139.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Aqua-Master-Tools-P50-Pro2-pH-Temperature-Meter-IP67-Waterproof-Pen-Meter.jpg?v=1776901765"},{"product_id":"aqua-master-tools-p160-pro2-combo-pen","title":"Aqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM \u0026 Temperature Meter","description":"\u003c!-- ============================================================\n     AQUA MASTER TOOLS P160 Pro2 COMBO PEN\n     The Grow Guys — Shopify Product Page\n     ============================================================\n\nPRODUCT TITLE:\nAqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM \u0026 Temperature Meter\n\nSHOPIFY FIELDS:\n  Title:         Aqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM \u0026 Temperature Meter\n  Product type:  pH \u0026 EC Meter\n  Vendor:        Aqua Master Tools\n  Collections:   Meters \u0026 Pens (pH \u0026 EC Testing), pH Control \u0026 Calibration\n  Tags:          aqua-master, aqua-master-tools, ph-meter, ec-meter, tds-meter, ppm-meter, temperature-meter, combo-pen, combo-meter, waterproof, ip67, replaceable-electrode, 2-point-calibration, hydroponic-meter, p160-pro2, carry-case\n  SKU:           AMT-METER-COMBO-P160PRO2\n\nSEO FIELDS:\n  Meta title (56 chars):   Aqua Master P160 Pro2 Combo Pen | The Grow Guys\n  Meta description (155):  5-in-1 pH, EC, TDS, PPM \u0026 temp combo pen with carry case \u0026 calibration solutions included. IP67 waterproof. Ships from Invermay, Tasmania.\n  URL slug:                aqua-master-tools-p160-pro2-combo-pen\n\nPRICING RECOMMENDATION:\n  Recommended price: $194.95 AUD\n  Reasoning: Aqua Gardening AU prices the P160 Pro2 at $199.00 — the only confirmed AU\n  competitor stocking the Pro2 specifically. Positioning at $194.95 gives TGG a visible\n  price advantage ($4.05) without compromising margin on a product that ships with\n  calibration solutions and a carry case already included. Do not discount below $189.95.\n\n============================================================ --\u003e\n\n\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n  \u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003e\n    One pen. Five readings. The Aqua Master Tools P160 Pro2 is the all-in-one combo meter that serious growers reach for when they want pH, EC, TDS, PPM, and temperature covered without carrying a kit bag of separate devices. It comes ready to go in a robust carry case with calibration solutions for pH 4.01, pH 7.00, and EC 1413 already included — so you can calibrate and start measuring on day one. The Pro2 upgrade brings a high-contrast black-and-white display, AAA battery power, and digital EC calibration that doesn't need the solution to be sitting at exactly 25°C, making field calibration far less fussy.\n  \u003c\/p\u003e\n\n  \u003c!-- BENEFIT CARDS --\u003e\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e5 Parameters, 1 Device\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH, EC, TDS, PPM, and temperature — everything you need to dial in your feed and reservoir without swapping pens between readings.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eShips Ready to Calibrate\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCarry case includes pH 4.01, pH 7.00, and EC 1413 calibration solutions. No need to order extras before your first measurement session.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTemp-Independent EC Cal\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eDigital EC calibration works at any temperature — no need to wait for your calibration fluid to hit exactly 25°C. Calibrate when it suits you.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDry Storage Electrode\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnlike the P50 Pro2, the P160's electrode doesn't need KCl storage solution — dry storage is fine. One less thing to stay on top of between grows.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eIP67 Waterproof + Floats\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFully submersible and buoyant. Slip it into the reservoir and it comes back up. Built for the conditions of an actual grow room, not a laboratory.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReplaceable Electrode\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eWhen the probe drifts beyond calibration, swap the electrode rather than the whole meter. Significantly extends the long-term value of the device.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.00 – 14.00 pH\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.01 or 0.1 pH (selectable)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±0.1 pH\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eEC Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.00 – 19.99 mS\/cm\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eEC Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.01 or 0.1 mS\/cm (selectable)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eEC Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±2% F.S.\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTDS Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.00 – 14.00 PPT\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTDS Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.01 or 0.1 PPT (selectable)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTDS Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±2% F.S.\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePPM Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0 – 14,000 PPM\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePPM Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e10 PPM\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePPM Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±10 PPM\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePPM Scale\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e700\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C – 50°C (32°F – 122°F)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Resolution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0.1°C (0.2°F)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemperature Accuracy\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e±0.5°C\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemp. Compensation\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e0°C – 50°C (automatic)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Calibration\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e2-point auto (pH 4.0 \u0026amp; 7.0)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eEC Calibration\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eDigital manual — any EC calibration fluid\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eIP67 (floats if dropped)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eAuto Power-Off\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAfter 8 minutes\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e2 x 1.5V AAA batteries (included)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e230 x 43 x 43 mm\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e132 g\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eCarry case, pH 4.01, pH 7.00 \u0026amp; EC 1413 cal. solutions\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e1 year (6 months on electrode)\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- TIP BOX --\u003e\n  \u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n    \u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrower Tips — Getting the Most From Your P160 Pro2\u003c\/strong\u003e\n    \u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n      \u003cli\u003eThe P160 uses a dry storage electrode — no need for KCl solution between uses. Just rinse, dry gently, and replace the protective cap.\u003c\/li\u003e\n      \u003cli\u003eCalibrate EC first, then pH. EC calibration is temperature-independent, so knock it out at room temp before touching the pH calibration buffers.\u003c\/li\u003e\n      \u003cli\u003eUse the included EC 1413 calibration solution for your first calibration, then reorder when it runs low — don't ration it. Fresh cal fluid is the cheapest way to keep readings accurate.\u003c\/li\u003e\n      \u003cli\u003eThe 700 PPM scale is set at the factory. If your nutrient brand references 500 PPM scale values, multiply their numbers by 1.4 to convert, or note it when logging feed data.\u003c\/li\u003e\n      \u003cli\u003eCalibrate pH with the 7.0 buffer first, then 4.0. The meter auto-recognises each point — don't rush the stabilisation time between dips.\u003c\/li\u003e\n      \u003cli\u003eThe 30-day calibration reminder is there for a reason — add it to your grow room checklist and don't skip it mid-cycle.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- HOW TO USE --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use the P160 Pro2\u003c\/h2\u003e\n\n  \u003cdiv\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate EC first\u003c\/strong\u003e — Remove the protective cap and rinse the electrode with distilled water. Pour a small amount of the included EC 1413 calibration solution into the cap or a clean cup. Dip the meter to the marked line, wait for the reading to stabilise, then confirm the EC calibration point. Because EC calibration on the P160 Pro2 is temperature-independent, you can do this at any room temperature without waiting.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate pH (2-point)\u003c\/strong\u003e — Rinse the electrode between calibration solutions. Enter pH calibration mode and dip into the pH 7.0 buffer first. Wait for a stable reading, then confirm. Rinse again and repeat with pH 4.0 buffer. The meter auto-recognises each buffer and locks in both calibration points automatically.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eTake your measurement\u003c\/strong\u003e — Press the On\/Off button to power up. Insert the meter vertically into your nutrient solution or water sample, submerging to the marked line. Stir gently and wait a few seconds for the reading to stabilise. The meter displays all active parameters in sequence as you cycle through them with the MODE button.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCycle through readings\u003c\/strong\u003e — Use the MODE button to scroll between pH, EC, TDS, PPM, and temperature on the display. You don't need to re-dip between parameters — all five readings are taken from the same dip at the same time.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eAdjust precision as needed\u003c\/strong\u003e — Toggle between 0.01 and 0.1 resolution for pH, EC, and TDS using the RES button. Use the higher precision setting when dialling in a critical reservoir or logging data. The 0.1 setting is sufficient for routine daily checks.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eRinse and store dry\u003c\/strong\u003e — After use, rinse the electrode thoroughly with distilled or RO water and dry gently with a clean cloth. Replace the protective cap. The P160 Pro2 uses a dry storage electrode, so no KCl solution is needed in the cap. The meter auto powers off after 8 minutes, and stores neatly back into its carry case.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- PAIRS WITH --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem; margin-top: 2rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\n    \u003ca href=\"\/products\/ph-up-and-down-by-growth-technology\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Up \u0026amp; Down by Growth Technology\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOnce your P160 tells you where pH sits, these correct it. Fast-acting and concentrated — the natural next step after any meter reading that's out of range.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-calibration-solution-by-bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Calibration Solution by Bluelab\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe included calibration solutions will eventually run out. Keep spare 4.0 and 7.0 buffer on hand so calibration day doesn't stall your grow schedule.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-4-buffer-solution-by-hy-gen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eHy-gen pH 4.0 Buffer Solution\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eStock up for ongoing monthly calibrations. Always use fresh, sealed buffer — old or contaminated solution is one of the most common causes of meter drift.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-7-buffer-solution-by-hy-gen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eHy-gen pH 7.0 Buffer Solution\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe neutral reference point for 2-point pH calibration. Always calibrate 7.0 first, then 4.0, for best coverage across the hydroponic pH range.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between the P160 Pro and the P160 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe Pro2 upgrades three things over the original P160 Pro: it runs on standard AAA batteries instead of button cells, the display has been changed to a black screen with white characters for significantly improved readability under grow lighting, and the EC calibration has been updated from analogue to digital — meaning it can be performed at any temperature without needing the calibration fluid to be exactly 25°C. The measurement range and accuracy specs are the same across both models.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat does the P160 Pro2 include in the box?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — the P160 Pro2 ships in a robust carry case that includes the meter, AAA batteries, pH 4.01 calibration solution, pH 7.00 calibration solution, and EC 1413 calibration solution. It's the most complete out-of-the-box package in the Aqua Master pen meter range, and one of the main reasons to choose the P160 over the P110 if you don't already have calibration solutions on hand.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between the P160 Pro2 and the P110 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBoth measure pH, EC, and temperature. The P160 Pro2 adds TDS and PPM readings and comes with a carry case and calibration solutions included. The P110 Pro2 is the more compact, pared-back option for growers who only need pH and EC — it costs less and does not include a case or calibration fluids. If you want the full picture in one device and value the included accessories, the P160 Pro2 is the better choice. If you just need pH and EC covered and already own calibration solutions, the P110 Pro2 is a solid option at a lower price point.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat PPM scale does the P160 Pro2 use?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe P160 Pro2 uses the 700 PPM scale, which is the most common scale used by Australian nutrient brands and hydroponic equipment manufacturers. If you're following a feeding schedule that references 500 PPM scale values, multiply those numbers by 1.4 to get the equivalent 700 scale reading. If you're unsure which scale your nutrient brand uses, check the feed chart — it's usually noted in the fine print.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the P160 Pro2 need KCl storage solution like other pH meters?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — the P160 Pro2 uses a dry storage electrode, which means you can store it dry between uses without filling the cap with KCl solution. Rinse the electrode after use, dry it carefully, and replace the protective cap. This makes it considerably lower maintenance than single-parameter pH pen meters that require wet storage to keep the glass membrane active.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use any EC calibration solution with the P160 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — this is one of the key advantages of the digital EC calibration system on the P160 Pro2. Because the calibration is not temperature-dependent, you can use any standard EC calibration fluid at any temperature. The included EC 1413 solution works well for the range growers typically operate in. When you need to restock, any quality EC 1413 calibration solution from a reputable brand will do the job.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate the P160 Pro2?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eAt a minimum, once per month — the meter's built-in 30-day calibration reminder will prompt you. For high-value crops or critical grow cycles, calibrating weekly is not excessive. An uncalibrated meter gives you false confidence, which is worse than no meter at all when you're making feed decisions based on the reading.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat warranty does the P160 Pro2 come with?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe meter is covered by a 1-year warranty against defects in materials and workmanship from the consumer purchase date. The electrode carries a separate 6-month warranty. Proof of purchase is required. Physical damage, misuse, dirt ingress, and damage from third-party parts or unauthorised repairs are not covered.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- CTA BLOCK --\u003e\n  \u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n    \u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eFive Readings. One Dip. Zero Excuses.\u003c\/h2\u003e\n    \u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eThe P160 Pro2 is the combo meter that pays for itself the first time it catches a reservoir out of range before it costs you a crop. Calibration solutions and carry case included — ready to measure from the moment it arrives.\u003c\/p\u003e\n    \u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n      \u003cbutton id=\"btn-add-to-cart\" style=\"background: #4caf50 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n      \u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eBrowse All pH \u0026amp; EC Meters\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('51379603112234', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#388e3c';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":51379603112234,"sku":"AMT-METER-COMBO-P160PRO2","price":249.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Aqua-Master-Tools-P160-Pro2-Combo-Pen-pH-EC-TDS-PPM-Temperature-Meter.jpg?v=1776901773"},{"product_id":"bluelab-ph-controller-no-wifi","title":"Bluelab pH Controller — Automatic pH Dosing \u0026 Monitoring (No Wi-Fi)","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n  \u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003e\n    One unit. Brand new, old stock. The Bluelab pH Controller is the set-and-forget wall-mounted pH dosing unit that ran grow rooms around the world for years before Bluelab replaced it with a Wi-Fi version. It automatically monitors your reservoir pH 24\/7 and doses pH Up or Down as needed via a built-in peristaltic pump — no phone required, no app to configure, no cloud dependency. Just plug it in, set your target pH, and walk away. If you've been after hands-free pH control without paying for connectivity you don't want, this is it. Includes the Bluelab pH probe and temperature probe — ready to go.\n  \u003c\/p\u003e\n\n  \u003c!-- CLEARANCE NOTICE --\u003e\n  \u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n    \u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eOne Unit Available — What You Need to Know\u003c\/strong\u003e\n    \u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n      \u003cli\u003eThis is old stock of the discontinued non-Wi-Fi Bluelab pH Controller. Brand new, never used, still in original packaging.\u003c\/li\u003e\n      \u003cli\u003eBluelab has replaced this model with the pH Controller Wi-Fi (currently $1050 new). This unit is $649.95 — a $400.05 saving for growers who don't need app connectivity.\u003c\/li\u003e\n      \u003cli\u003eThis product is no longer manufactured. Bluelab's online support page for this specific model is no longer active, and the manufacturer's warranty does not apply to old stock sold through a retailer after the product has been discontinued. Buy with that in mind.\u003c\/li\u003e\n      \u003cli\u003eReplacement pH probes and temperature probes are still available from Bluelab and stocked by us — the probe accessories for this controller use a standard BNC connection compatible with current Bluelab probes.\u003c\/li\u003e\n      \u003cli\u003eOnce it's gone, it's gone. We won't be restocking this model.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- BENEFIT CARDS --\u003e\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 2rem; width: 100%; box-sizing: border-box;\"\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFully Automatic pH Dosing\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eSet your target pH and the controller doses Up or Down automatically via the built-in peristaltic pump. No manual intervention needed between checks.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNo Wi-Fi. No App. No Dependency.\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eWorks entirely standalone. Nothing to connect, no account to create, no service that can go offline. It just runs — every hour of every day.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eOverdose Protection Built In\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eDosing lockouts and high\/low alarms prevent runaway dosing. If pH doesn't respond after repeated doses, the controller locks out and alerts you.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eProbes Included\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eComes with both the Bluelab double junction pH probe and the temperature probe for automatic temperature compensation. Nothing extra to buy to get started.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eHandles Up to 760L Reservoirs\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRated for reservoirs up to 200 US gal \/ 760 L. Suitable for serious hobby grows and small commercial setups running a single recirculating reservoir.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAuto-Resume After Power Loss\u003c\/strong\u003e\n      \u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRestarts dosing automatically after a power interruption. Your settings are retained and the controller picks up where it left off without manual reset.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n    \u003cdiv\u003e\u003cstrong\u003eReservoir Capacity\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eUp to 200 US gal \/ 760 L\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDosing Direction\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003epH Up (alkali) or pH Down (acid) — select one\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePump Type\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eBuilt-in peristaltic pump (replaceable)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDosing Tube\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e4 m acid\/alkali resistant tube included\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eGreen backlit LCD, adjustable brightness\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eAlarms\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eFlashing high\/low pH alarm with control lockout\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDosing Lockout\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eYes — prevents over-dosing\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePower Loss\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eAuto-resume dosing on restart\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eSimple push-button with on-screen guide\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003epH Probe\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eReplaceable double junction pH probe (included)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eTemp Probe\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eBluelab Temperature Probe for ATC (included)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eNone — standalone operation only\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eMount\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eWater resistant, wall mount design\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eInternational power supply (AU plug compatible)\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eDosing solution\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eUse with undiluted Bluelab pH Up or Down\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eBrand new — discontinued old stock\u003c\/div\u003e\n    \u003cdiv\u003e\u003cstrong\u003eManufacturer warranty\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eNot applicable (discontinued product)\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- HOW TO USE --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Set Up the Bluelab pH Controller\u003c\/h2\u003e\n\n  \u003cdiv\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eWall mount and position probes\u003c\/strong\u003e — Mount the controller on a wall or stable surface within cable reach of your reservoir. Both the pH probe and temperature probe need to sit in the nutrient solution. Position the controller so the display is easy to read at a glance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eRoute the dosing tube\u003c\/strong\u003e — Feed one end of the 4 m acid\/alkali resistant dosing tube into your pH Up or pH Down stock solution container. Route the other end so it drips above the maximum solution level of your reservoir — never submerged. Cut to length as needed.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eCalibrate the pH probe\u003c\/strong\u003e — Before first use, calibrate using the push-button calibration with on-screen guide. You'll need pH 4.0 and 7.0 buffer solutions. The controller walks you through each step — it's a simple two-point calibration, same as any Bluelab device.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eSet your target pH and dose timing\u003c\/strong\u003e — Use the menu to program your desired pH setpoint, and set your Dose On and Dose Off times. Dose On controls how long the pump runs per dose cycle; Dose Off controls the gap between doses to allow for mixing. Start conservative — it's easier to increase dosing than to undo an overdose.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eSet your alarm thresholds\u003c\/strong\u003e — Program your high and low pH alarm limits. If pH drifts outside these limits, the controller flashes an alarm and locks out dosing to protect your reservoir. Check the controller whenever the alarm triggers rather than leaving it unattended.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n      \u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eMonitor and maintain\u003c\/strong\u003e — Calibrate the pH probe monthly using Bluelab-compatible buffer solutions. Keep the probe tip wet when not in use. Replace the dosing tube when it shows signs of wear or discolouration. Use undiluted Bluelab pH Up or Down in the stock container — diluted solutions can cause underdosing and inconsistent response.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- PAIRS WITH --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem; margin-top: 2rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 2rem; width: 100%; box-sizing: border-box;\"\u003e\n\n    \u003ca href=\"\/products\/ph-calibration-solution-by-bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab pH Calibration Solution\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH 4.0 and 7.0 buffer solutions for 2-point calibration. Calibrate monthly to keep the controller reading and dosing accurately. Always use fresh, sealed buffer.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-up-and-down-by-growth-technology\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Up \u0026amp; Down by Growth Technology\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe dosing solution that feeds the controller's pump. Use undiluted, as specified by Bluelab. Keep a good volume in stock — the controller will use it steadily.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/products\/ph-down-by-growth-technology\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Down by Growth Technology\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eMost recirculating systems drift alkaline over time, so pH Down is typically the more heavily used of the two. Keep a spare bottle on hand to avoid running dry mid-cycle.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n    \u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n      \u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMore Bluelab Products\u003c\/strong\u003e\n      \u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eBrowse our full Bluelab range — meters, monitors, EC tools, and calibration accessories. Bluelab replacement probes use a standard BNC connection compatible with this controller.\u003c\/p\u003e\n    \u003c\/a\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eThis product is discontinued — is it still worth buying?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, if you don't need Wi-Fi connectivity. The controller itself is brand new and fully functional — the only thing that's discontinued is the product line. The core hardware is the same reliable Bluelab dosing system that ran grow rooms for years. Replacement pH probes and temperature probes remain available through Bluelab's current parts range, both from us and directly from Bluelab, as the BNC probe connection is standard across their current product line. What you lose is the manufacturer warranty pathway and any future firmware or software support — neither of which apply to a standalone controller with no connectivity anyway.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between this and the current Bluelab pH Controller Wi-Fi?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe current Wi-Fi model adds remote monitoring and control via the Edenic app, a variable speed pump, and Bluetooth connectivity. This unit has none of that — it operates entirely standalone with a fixed-speed peristaltic pump and on-device controls only. If you want to check pH from your phone or receive alerts remotely, you need the Wi-Fi model at $1050. If you want automatic pH dosing without any connectivity, this does the same core job for $400 less.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this control pH Up and pH Down at the same time?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — this controller doses in one direction only, either Up or Down, which you set during initial programming. Most recirculating hydroponic systems drift alkaline over time, so the majority of growers run it configured for pH Down dosing. If your system actually needs two-way correction, this unit won't suit you — you'd need a dual-channel controller instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat pH Up or Down solution should I use with it?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBluelab specifies using undiluted Bluelab pH Up or Down in the stock container. Using diluted solutions or alternative brands can cause underdosing and inconsistent pH correction, which undermines the whole point of a controller. We stock Growth Technology pH Up and Down, which is high-concentration and performs well — but follow Bluelab's guidance and use it undiluted.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I replace the pH probe when it eventually wears out?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — the pH probe on this controller uses a standard BNC connection, which is compatible with Bluelab's current replacement pH probes. These are still actively manufactured and available. The temperature probe is also still available as a Bluelab spare part. This is one of the reasons Bluelab equipment holds its value — probe replacement extends the life of the device significantly rather than forcing a full replacement.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow many units are available?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eOne. This is old stock clearance — a single brand new unit. Once it sells, this listing will be removed. We won't be restocking the non-Wi-Fi model as it is no longer manufactured.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n    \u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs there a warranty on this unit?\u003c\/summary\u003e\n    \u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo manufacturer warranty applies. Bluelab's warranty does not extend to discontinued products sold as old stock through a retailer. The unit is brand new and untested — if you receive something that is dead on arrival or clearly defective out of the box, contact us directly and we'll work through it with you. But we're being upfront: standard warranty coverage does not apply here, and that's reflected in the price.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- CTA BLOCK --\u003e\n  \u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n    \u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eAutomatic pH. No App Required.\u003c\/h2\u003e\n    \u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eOne unit. Brand new. $400 less than the current Wi-Fi model for growers who just want it to work without pulling out their phone. When it's gone, it's gone.\u003c\/p\u003e\n    \u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n      \u003cbutton id=\"btn-add-to-cart\" style=\"background: #4caf50 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n      \u003ca href=\"\/collections\/bluelab-1\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eBrowse All Bluelab\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('51379641024810', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#388e3c';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#4caf50';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":51379641024810,"sku":"BL-CTRL-PH-NOWIFI","price":649.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Bluelab-pH-Controller-Automatic-pH-Dosing-Monitoring-No-Wi-Fi.webp?v=1776901783"},{"product_id":"bluelab-ph-penplus","title":"pH PenPlus by Bluelab — Replaceable Probe pH \u0026 Temperature Meter","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab pH PenPlus is a handheld pH and temperature meter with a replaceable probe — when the probe wears out, you screw in a new Bluelab pH ProbePlus instead of binning the whole pen. Built in New Zealand to IP68 waterproof standards with a double-junction probe, backlit display and simple 2-point calibration, it's the long-service upgrade to the classic Bluelab pH Pen that growers have trusted for over a decade.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReplaceable Probe\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eScrew-cap design lets you swap in a fresh pH ProbePlus when natural probe wear occurs — restore performance without replacing the pen.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDouble-Junction Accuracy\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eDouble-junction probe resists contamination from nutrient-heavy solutions for reliable ±0.1 pH readings, feed after feed.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eIP68 Waterproof\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFully dustproof and waterproof — built for wet grow rooms, reservoirs and greenhouse work, not just the odd splash.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eCalibration Made Easy\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eSimple 2-point calibration with a built-in 30-day reminder, plus pH 4.0, pH 7.0 and KCl storage sachets in the box.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 0.0 – 14.0 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±0.1 pH at 25°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 0.1 pH \/ 1°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0 – 50°C (°C or °F display, ATC)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e Replaceable double-junction pH\/temp (Bluelab pH ProbePlus)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof Rating:\u003c\/strong\u003e IP68 dustproof and waterproof\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Backlit with hold-reading function\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 2-point (pH 7.0 + 4.0 or 10.0) with 30-day reminder\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 1 x AAA alkaline battery, approx. 350 hours, auto-off\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 years pen \/ 6 months probe\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade In:\u003c\/strong\u003e New Zealand\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIn the Box:\u003c\/strong\u003e Pen, pH 4.0 \u0026amp; 7.0 calibration sachets, KCl storage solution, lanyard\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Hydrate Before Anything Else\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eThe glass bulb must be hydrated in KCl storage solution for 24 hours before first calibration. A dehydrated probe drifts, reads stuck near pH 7 and can be permanently damaged — this is the single most skipped step with pH pens.\u003c\/li\u003e\n\u003cli\u003eNever soak or store the probe in RO, distilled or deionised water — pure water changes the reference chemistry and kills the probe. KCl only.\u003c\/li\u003e\n\u003cli\u003eKeep a spare pH ProbePlus on the shelf and hydrate it 24 hours before swapping — Bluelab's own tip for zero downtime mid-crop.\u003c\/li\u003e\n\u003cli\u003eCalibrate monthly with fresh pH 7.0 and 4.0 solution — the pen's 30-day reminder tracks it for you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use — First Use Setup\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHydrate for 24 hours.\u003c\/strong\u003e Remove the storage cap and place the probe tip in the KCl solution sachet, or stand the pen upright in a small container with enough KCl storage solution to submerge the tip. Leave for at least 24 hours — this conditions the glass bulb so the probe can calibrate correctly. Never use RO, distilled or deionised water.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRinse.\u003c\/strong\u003e After hydration, rinse the probe tip in fresh tap water and gently shake off the excess.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCalibrate — always pH 7.0 first.\u003c\/strong\u003e Place the tip in the pH 7.0 sachet, hold CAL until the display confirms, rinse, then repeat in pH 4.0 (or pH 10.0 if you mostly measure above 7). Both points are required — the pen won't hold a calibration done to 7.0 alone.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMeasure.\u003c\/strong\u003e Dip the probe at least 2cm into your nutrient solution, reservoir or runoff and wait for the reading to stabilise. Short-press the power button to hold a reading.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStore wet.\u003c\/strong\u003e Rinse the probe in fresh tap water after every use and refit the storage cap. Add 3–5 drops of KCl solution to the sponge inside the cap once a week so the probe never dries out.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; pH Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFresh calibration solution and pH adjusters keep your readings accurate and your solution in range.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eEC \u0026amp; Nutrient Meters\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003ePair with a conductivity pen to measure nutrient strength alongside pH for the full feeding picture.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMore From Bluelab\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eProbes, monitors and meters from the New Zealand brand growers have relied on for over 30 years.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to soak the probe before first use?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Hydrate the probe tip in KCl storage solution for at least 24 hours before calibrating. Skipping this leaves the glass bulb dehydrated — readings drift, sit stuck near pH 7 and the probe can be permanently damaged. Never hydrate in RO, distilled or deionised water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the probe on the pH PenPlus replaceable?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The screw-cap probe design lets you swap in a new Bluelab pH ProbePlus when the original wears, so you replace the probe rather than the whole pen. Hydrate and calibrate every new probe before use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pH PenPlus waterproof?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It carries an IP68 dustproof and waterproof rating, so it handles wet grow rooms, reservoirs and greenhouse conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between the pH Pen and the pH PenPlus?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe PenPlus adds a replaceable double-junction probe, a 2-year pen warranty and IP68 construction. The standard pH Pen has a fixed probe — when it wears out, the whole pen is replaced.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it measure temperature as well as pH?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It reads solution temperature from 0–50°C with automatic temperature compensation and displays in Celsius or Fahrenheit alongside the pH reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes calibration solution come included?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It ships with pH 4.0 and pH 7.0 calibration sachets plus KCl storage solution, so you can hydrate, calibrate and start measuring without buying anything extra.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eMeasure Once. Trust It.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eBluelab accuracy with a probe you can replace — shipped fast Australia-wide from Tasmania.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52063970132266', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52063970132266,"sku":"BL-MTR-PHPEN-PLUS","price":184.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-PenPlus-by-Bluelab-Replaceable-Probe-pH-Temperature-Meter.png?v=1787635543"},{"product_id":"bluelab-ph-probeplus","title":"pH ProbePlus by Bluelab — Replacement Probe for pH PenPlus","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab pH ProbePlus is the replacement pH and temperature probe for the Bluelab pH PenPlus. When your probe reaches the end of its service life — or can no longer be calibrated — you swap this in with no tools and keep the pen. It's the whole point of the PenPlus design: replace the consumable part, not the instrument.\u003c\/p\u003e\n\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #c0392b; display: block; margin-bottom: 0.5rem;\"\u003eCheck Compatibility Before Ordering\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.93rem; line-height: 1.6;\"\u003eThe pH ProbePlus fits the Bluelab pH PenPlus only. It is not the BNC-connector Bluelab pH Probe used with Combo Meters, pH Meters and Guardian Monitors. If your device connects via a cable and BNC plug, you need the standard Bluelab pH Probe instead.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTool-Free Swap\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnscrew the collar, pull the old probe, seat the new one and screw it down — done in under a minute, no tools required.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003epH and Temperature\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRestores both measurements in one swap — full 0.0–14.0 pH range with the same ±0.1 accuracy the pen shipped with.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDouble-Junction Design\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eResists reference contamination from nutrient-heavy solutions, supporting stable readings across the probe's working life.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eStays Hydrated\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eKCl-filled silicone storage cap with internal sponge keeps the glass bulb wet between uses — the single biggest factor in probe lifespan.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Bluelab pH PenPlus only\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH and temperature\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 0.0 – 14.0 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e ±0.1 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProbe Type:\u003c\/strong\u003e Double-junction, screw-cap fitting\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOperating Environment:\u003c\/strong\u003e Solutions 0.2 EC and above, 0 – 60°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Tool-free\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 6-month limited warranty\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab SKU:\u003c\/strong\u003e PROBPLUSPH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIn the Box:\u003c\/strong\u003e pH ProbePlus with KCl-filled storage cap\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Hydrate the New Probe First\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eA new probe must be hydrated in KCl storage solution for at least 24 hours, then calibrated, before it goes anywhere near your reservoir. A dehydrated probe drifts, reads stuck near pH 7 and can be permanently damaged.\u003c\/li\u003e\n\u003cli\u003eCalibration and storage solution are sold separately — add pH 7.0 and 4.0 calibration sachets plus KCl storage solution to your order so you can hydrate and calibrate the day it arrives.\u003c\/li\u003e\n\u003cli\u003eNever soak or rinse it in RO, distilled or deionised water — pure water changes the reference chemistry and kills the probe.\u003c\/li\u003e\n\u003cli\u003eBluelab's own pro tip: keep a spare on hand and start hydrating it 24 hours before swapping out the old probe — zero downtime mid-crop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Replace the Probe\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHydrate the new probe.\u003c\/strong\u003e Soak the tip in KCl storage solution for at least 24 hours before installation. Never use RO, distilled or deionised water.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRemove the old probe.\u003c\/strong\u003e Turn the pen off, remove the storage cap, unscrew the collar and pull the existing probe until it detaches.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFit the new probe.\u003c\/strong\u003e Insert the replacement and screw the collar in clockwise until firmly and securely attached.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCalibrate before measuring.\u003c\/strong\u003e Run a full 2-point calibration — pH 7.0 first, then pH 4.0 (or 10.0) — using fresh calibration solution. A new probe is never accurate until it's been hydrated and calibrated.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/bluelab-ph-penplus\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab pH PenPlus\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe pen this probe belongs to — waterproof pH and temperature measurement with a replaceable heart.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; pH Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eGrab pH 7.0 and 4.0 calibration sachets plus KCl storage solution — you'll need them to hydrate and calibrate the new probe.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMore From Bluelab\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eProbes, monitors and meters from the New Zealand brand growers have relied on for over 30 years.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the pH ProbePlus fit the standard Bluelab pH Pen or Combo Meter?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The pH ProbePlus fits the Bluelab pH PenPlus only. The standard pH Pen has a fixed probe, and Combo Meters, pH Meters and Guardian Monitors use the separate BNC-connector Bluelab pH Probe.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes calibration solution come included?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The pH ProbePlus is the replacement probe only — calibration sachets ship with the pH PenPlus pen, not the probe. Add pH 7.0 and 4.0 calibration solution plus KCl storage solution to your order so you can hydrate and calibrate the new probe before use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to soak the new probe before using it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Hydrate the probe tip in KCl storage solution for at least 24 hours, then run a full 2-point calibration before taking measurements. Skipping hydration leaves the glass bulb dehydrated — readings drift and the probe can be permanently damaged.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need tools to replace the probe?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The screw-cap design swaps by hand — unscrew the collar, remove the old probe, seat the new one and screw the collar back down.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhen should I replace the probe on my pH PenPlus?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eReplace it when the probe is damaged or can no longer be calibrated. pH probes age through normal use — if cleaning, hydration and recalibration no longer restore stable readings, the glassware has reached the end of its service life.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat warranty does the pH ProbePlus carry?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe pH ProbePlus carries a 6-month limited warranty. Probes are consumable components that wear with regular use, which is why the warranty is shorter than the 2-year cover on the pen itself.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eReplace the Probe, Not the Pen.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eRestore full accuracy to your pH PenPlus — shipped fast Australia-wide.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/products\/bluelab-ph-penplus\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop the pH PenPlus\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52066546188586', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52066546188586,"sku":"BL-MTR-PHPROBE-PLUS","price":74.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-ProbePlus-by-Bluelab-Replacement-Probe-for-pH-PenPlus.png?v=1787635551"},{"product_id":"bluelab-onepen-replacement-probe","title":"OnePen Replacement Probe by Bluelab — pH, EC \u0026 Temperature Sensor","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab OnePen Replacement Probe restores pH, conductivity (EC) and temperature accuracy to your Bluelab OnePen in one quick swap. When the probe wears out — or can no longer be calibrated — you replace the sensor, not the whole meter. With a double-junction pH probe and titanium EC electrodes, it brings your OnePen back to the precision it shipped with.\u003c\/p\u003e\n\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #c0392b; display: block; margin-bottom: 0.5rem;\"\u003eCheck Compatibility Before Ordering\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.93rem; line-height: 1.6;\"\u003eThis probe fits the Bluelab OnePen (PENONE) only. It does not fit the pH PenPlus, the standard pH Pen, or any BNC-connector Bluelab meter or monitor. The OnePen only accepts genuine Bluelab probes — imitation probes are rejected by the pen.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eThree Measurements, One Swap\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRestores pH, EC and temperature readings in a single replacement — the full sensor package of the OnePen renewed at once.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eLab-Grade Accuracy\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRestores the OnePen's full ±0.05 pH and ±0.1 EC accuracy with readings down to two decimal places.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTitanium EC Electrodes\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCorrosion-resistant titanium conductivity electrodes and a double-junction pH probe built for nutrient-rich solutions.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eCheaper Than a New Meter\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eExtends the life of your OnePen and keeps a $395 instrument out of landfill — replace the consumable, keep the electronics.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Bluelab OnePen (PENONE) only\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH, conductivity (EC) and temperature\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH:\u003c\/strong\u003e 0.0 – 14.0 pH, ±0.05 at 25°C, double-junction probe\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConductivity:\u003c\/strong\u003e 0 – 10.0 EC, ±0.1 EC, titanium electrodes (factory calibrated)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 0 – 50°C, ±1°C, with automatic temperature compensation\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOperating Environment:\u003c\/strong\u003e 0 – 50°C, IP68 dustproof and waterproof\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Tool-free — arrow-to-notch alignment, threaded collar\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAverage Probe Life:\u003c\/strong\u003e Approximately 18 months with good care\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 6-month limited warranty\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab SKU:\u003c\/strong\u003e PROBONE\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Hydrate the Bulb, Not the Electrodes\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eHydrate the pH glass bulb via the storage cap: place a few drops of KCl storage solution on the sponge inside the cap, fit it, and leave for 24 hours before first calibration. A dehydrated bulb drifts, reads stuck near pH 7 and can break.\u003c\/li\u003e\n\u003cli\u003eDo not soak the titanium EC electrodes in KCl solution for any length of time — Bluelab warns against it. The cap-sponge method hydrates the bulb without bathing the electrodes.\u003c\/li\u003e\n\u003cli\u003eNever use RO, distilled or deionised water anywhere near the probe — pure water permanently damages it. KCl only.\u003c\/li\u003e\n\u003cli\u003eClean with Bluelab pH Probe Cleaner and a soft brush on the EC electrodes — never Bluelab Conductivity Probe Cleaner, which Bluelab states is not compatible with the OnePen, and never abrasive cleaners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Replace the Probe\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRemove the old probe.\u003c\/strong\u003e Remove the storage cap, turn the pen upside down so the batteries stay in place, unscrew the threaded collar and remove the old probe from the pen body.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFit the new probe.\u003c\/strong\u003e Remove the protective cap, line up the arrow on the probe with the notch on the pen body, push it all the way in and secure the threaded collar until fully tightened.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHydrate for 24 hours.\u003c\/strong\u003e Place a few drops of KCl storage solution on the sponge inside the storage cap, refit the cap and leave for 24 hours so the glass bulb is active. Never use RO, distilled or deionised water, and don't soak the titanium electrodes in KCl.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCalibrate pH — always 7.0 first.\u003c\/strong\u003e Rinse the tip in fresh tap water, then run a full 2-point pH calibration with fresh pH 7.0 then 4.0 (or 10.0) solution. EC is factory calibrated — verify against 2.77 EC standard if you want to confirm.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/one-pen-by-bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab OnePen\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe 3-in-1 pH, EC and temperature meter this probe belongs to — one pen for the whole reservoir check.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; pH Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eGrab pH 7.0 and 4.0 calibration sachets plus KCl storage solution — you'll need them to hydrate and calibrate the new probe.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMore From Bluelab\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eProbes, monitors and meters from the New Zealand brand growers have relied on for over 30 years.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this probe fit the pH PenPlus or other Bluelab meters?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. This replacement probe fits the Bluelab OnePen only. The pH PenPlus uses the separate pH ProbePlus, and Combo Meters, pH Meters and Guardian Monitors use BNC-connector probes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWill a cheaper non-genuine probe work in the OnePen?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The OnePen detects and rejects non-genuine probes with a \"PROBE INVALID\" error — only official Bluelab OnePen Replacement Probes will function.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it replace pH, EC and temperature sensing?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The probe carries all three sensors — a double-junction pH probe, titanium EC electrodes and the temperature sensor — so one swap restores every measurement the OnePen takes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to hydrate the new probe before using it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Bluelab recommends hydrating the pH glass bulb for 24 hours before initial calibration — a few drops of KCl storage solution on the sponge inside the storage cap, cap fitted. Don't soak the titanium electrodes in KCl, and never use RO, distilled or deionised water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long does an OnePen probe last?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eApproximately 18 months on average, according to Bluelab. pH probes are charged with reference material that expends through use — good hydration and regular cleaning stretch the lifespan, but every probe eventually fails to calibrate and needs replacing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use Bluelab Conductivity Probe Cleaner on it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Bluelab states its Conductivity Probe Cleaner is not compatible with the OnePen or this replacement probe. Clean with Bluelab pH Probe Cleaner and a soft brush on the EC electrodes, never abrasives, and recalibrate pH after every clean.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes calibration solution come included?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The probe ships on its own — add pH 7.0 and 4.0 calibration solution and KCl storage solution to your order so you can hydrate and calibrate before first use.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eReplace the Probe, Keep the Pen.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eRestore pH, EC and temperature accuracy to your OnePen — shipped fast Australia-wide.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/products\/one-pen-by-bluelab-1\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop the OnePen\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52066658189610', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52066658189610,"sku":"BL-MTR-PROBE-ONE","price":159.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/OnePen-Replacement-Probe-by-Bluelab-pH-EC-Temperature-Sensor.png?v=1787635556"},{"product_id":"bluelab-soil-ph-pen","title":"Soil pH Pen by Bluelab — Direct-Reading Soil \u0026 Media pH Meter","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab Soil pH Pen reads pH and temperature directly in soil, coco, potting mix and other growing media — push the probe into the root zone and read the number, no slurry mixing required. The integrated storage cap doubles as a dibber that makes a safe pathway for the glass probe, and the pen is fully waterproof with automatic temperature compensation. It measures nutrient solutions too, making it the one pH tool a soil grower actually needs.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReads Directly in Soil\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eMeasures pH and temperature straight in the root zone of soil, coco and media — no messy slurries or sample jars needed for a spot check.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDibber-Protected Probe\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe storage cap doubles as a dibber — press it in first to create a pathway, then insert the probe. Protects the fragile glass every measurement.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFully Waterproof\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eWaterproof, not just water resistant — built for wet media, greenhouse work and the knocks of everyday growing.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eSolutions Too\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAlso measures nutrient solutions and soil slurries with ±0.1 pH accuracy and automatic temperature compensation — one pen for pot and reservoir.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH and temperature, directly in soils\/media and in solution\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 0.0 – 14.0 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±0.1 pH, ±1°C at 25°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 0.1 pH \/ 1°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0 – 50°C (°C or °F, automatic temperature compensation)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 2-point (pH 7.0 + 4.0 or 10.0) with 30-day reminder; 3-point possible\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof:\u003c\/strong\u003e Fully waterproof\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Backlit LCD with hold-reading function\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eStorage Cap:\u003c\/strong\u003e Integrated cap\/dibber, holds KCl storage solution\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 1 x AAA alkaline battery, approx. 350 hours, auto-off\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year limited warranty\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade In:\u003c\/strong\u003e New Zealand\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Loosen the Cap, Always\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eAlways twist the storage cap loose before pulling it off or pushing it on — pulling it straight off breaks the glass probe. Check for the gap between cap and dibber first, every time.\u003c\/li\u003e\n\u003cli\u003eIf it dries, it dies. Keep the probe tip covered in KCl storage solution inside the cap at all times, and check the level monthly in long-term storage. A dried-out probe needs a 24-hour KCl re-soak and may already be permanently damaged.\u003c\/li\u003e\n\u003cli\u003eNever store, soak or rinse the probe in RO, distilled or deionised water — pure water changes the reference chemistry and kills the probe.\u003c\/li\u003e\n\u003cli\u003eClean the glassware monthly and before every calibration with Bluelab pH Probe Cleaner or mild detergent and a soft toothbrush — a dirty probe won't calibrate accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use — First Use Setup\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCheck hydration.\u003c\/strong\u003e Stand the pen upright and check the probe tip is covered by KCl storage solution inside the cap. If it isn't, top up the KCl in the cap and stand the pen upright for 24 hours before use — the bulb must be hydrated to calibrate correctly.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCalibrate — always pH 7.0 first.\u003c\/strong\u003e Twist the cap loose and remove it, rinse the tip in fresh tap water, place it in pH 7.0 solution and long-press CAL until the display flashes. When \"CAL 7\" shows, rinse and repeat in pH 4.0 (or 10.0 if you measure above 7). The check mark confirms a completed 2-point calibration.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eDib first, then probe.\u003c\/strong\u003e Clear the top layer of soil, press the cap\/dibber into the sample up to the \"soil\" mark, remove it, then insert the probe gently into the hole it made. Never make the hole with the probe itself, and never apply sideways pressure.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRead and repeat.\u003c\/strong\u003e Wait for the reading to settle, short-press the power button to hold it if needed, and rinse the tip in fresh running water between every measurement. For field testing, average readings from several spots.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStore wet.\u003c\/strong\u003e Rinse the probe, make sure the cap holds enough KCl to cover the tip, then slide the loosened cap on and twist to tighten.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; pH Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH 7.0 and 4.0 sachets plus KCl storage solution — the pen needs both to stay accurate and hydrated.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/organic-gardening\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eOrganic Gardening\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eLiving-soil inputs, organic fertilisers and amendments — dial in the root zone the pen is reading.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/bluelab-1\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMore From Bluelab\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eProbes, monitors and meters from the New Zealand brand growers have relied on for over 30 years.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFAQ\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it measure soil pH directly, without a slurry?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The probe reads pH and temperature directly in moist soil, coco and other media — use the cap\/dibber to make the pathway first. It can also measure a prepared soil slurry or nutrient solution when you want a bench-style reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan it measure nutrient solutions as well as soil?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It works in nutrient solutions, reservoirs and soil solutions as well as directly in media, so it covers both the pot and the res.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to soak the probe before first use?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes — check it first. The tip ships stored in KCl solution inside the cap; if the tip isn't covered, top up the KCl and stand the pen upright for 24 hours before calibrating. A dehydrated probe drifts, reads stuck near pH 7 and can be permanently damaged. Never use RO, distilled or deionised water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use it in dry soil?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — the sample needs moisture for a reliable reading. For dry samples, Bluelab recommends moistening with RO or distilled water and ideally waiting 24 hours before measuring (tap water shifts the reading with its own pH). Note that's for the soil sample only — never put RO or distilled water on the probe itself.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat pH should my soil be?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBluelab's recommended range for soil-grown crops is 6.2 – 7.2 pH (plant specific), versus 5.5 – 6.3 for solution growing. Outside the right range, nutrients lock up and plants can't access them no matter how well you feed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the probe replaceable?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The Soil pH Pen has a fixed probe — when the glassware ages beyond calibration, the unit is replaced. Good care stretches its life considerably: keep the tip wet in KCl, clean monthly, use the dibber every time and never force the cap.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe pen tracks it for you — the calibration check mark disappears 30 days after your last successful calibration. Also recalibrate after every clean, after a battery change, or whenever a reading looks off. Always pH 7.0 first, then 4.0 or 10.0.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eKnow Your Root Zone.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eSoil pH straight from the pot, no slurry required — shipped fast Australia-wide.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52066827501866', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52066827501866,"sku":"BL-MTR-PHPEN-SOIL","price":299.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Soil-pH-Pen-by-Bluelab-Direct-Reading-Soil-Media-pH-Meter.png?v=1787635561"},{"product_id":"bluelab-conductivity-pen","title":"Conductivity Pen by Bluelab — Fast, Accurate EC, PPM \u0026 Temperature Testing","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab Conductivity Pen tells you exactly how strong your nutrient solution is, in seconds. Dip it in your reservoir and it reads EC, ppm 500 (TDS) or ppm 700 plus solution temperature on a backlit display — so you know whether to feed harder or back off before your plants tell you the hard way. It's factory calibrated, fully waterproof, and built by Bluelab in New Zealand for grow rooms, not laboratories.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReady Out of the Box\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFactory calibrated with the AAA battery included. Turn it on and start reading — calibration is optional, not required.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eReads the Scales You Use\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eSwitch between EC, ppm 500 (TDS) and ppm 700 to match whatever scale your nutrient chart is written in.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTemperature Compensated\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAutomatic Temperature Compensation (ATC) corrects the reading for solution temperature, so it's accurate in a cold shed or a warm tent.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFully Waterproof\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eNot just splash resistant — drop it in the reservoir and it survives. Hold function freezes the reading so you don't lose it.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasurement range\u003c\/strong\u003e\u003cbr\u003e0.0–10.0 EC \/ 0–5000 ppm (500) \/ 0–7000 ppm (700)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature range\u003c\/strong\u003e\u003cbr\u003e0–50°C \/ 32–122°F\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAccuracy at 25°C\u003c\/strong\u003e\u003cbr\u003e±0.1 EC \/ ±50 ppm (500) \/ ±70 ppm (700), ±1°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e\u003cbr\u003e0.1 EC \/ 10 ppm, 1°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature compensation\u003c\/strong\u003e\u003cbr\u003eAutomatic (ATC)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003cbr\u003eFactory calibrated — manual calibration optional\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUnits\u003c\/strong\u003e\u003cbr\u003eEC, ppm 500, ppm 700, °C, °F\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003cbr\u003eBacklit LCD with low battery indicator\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower\u003c\/strong\u003e\u003cbr\u003e1 x AAA alkaline (included) — approx. 350 hours\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOther\u003c\/strong\u003e\u003cbr\u003eFully waterproof, auto off, hold reading function\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003e1-year limited warranty\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade by\u003c\/strong\u003e\u003cbr\u003eBluelab, New Zealand\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Keep the Probe Clean\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eThe pen is only as accurate as the probe is clean. Rinse it under running tap water after every use to stop nutrient salts building up.\u003c\/li\u003e\n\u003cli\u003eEvery two weeks, clean the probe face with a drop of Bluelab Conductivity Probe Cleaner or an unscented cream cleanser like Jif — never scented varieties, the oils contaminate the probe.\u003c\/li\u003e\n\u003cli\u003eLow readings almost always mean a dirty probe, not a faulty pen. Clean it and retest before assuming anything's wrong.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use It\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003ePress the power button to turn the pen on. It recalls your last measurement for 3 seconds, then it's ready to read.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003ePlace the probe in your nutrient solution and wait for the reading to stabilise.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003eShort press the power button to hold the reading on screen if you need to note it down. To change units, hold the units button for 3 seconds and cycle through EC, ppm 500 and ppm 700.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eRinse the probe under running water after each use, and give it a proper clean every two weeks. If you choose to calibrate, always clean the probe first, then use Bluelab 2.77 EC standard solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab pH PenPlus\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEC tells you how much food is in the water — pH tells you whether the plant can eat it. Run both for the full picture.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; Probe Care\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003e2.77 EC standard solution and probe cleaner keep your readings honest for years.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/water-control\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eWater Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003ePumps, reservoirs and dosing gear to act on what the pen tells you.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/hydroponic-nutrients\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eNutrients\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eBase nutrients and additives — measured feeds beat guesswork every time.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the Bluelab Conductivity Pen need calibrating before first use?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. It's factory calibrated and ready to use out of the box. Manual calibration is optional — if you want to check it, clean the probe first, then calibrate in Bluelab 2.77 EC standard solution.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it measure pH?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. This pen measures conductivity (EC\/ppm) and temperature only. For pH, pair it with the Bluelab pH PenPlus — the two together cover everything you need to know about your nutrient solution.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pen waterproof?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, fully waterproof — provided the battery cap is fastened down with no gap between cap and body. It will survive a dunk in the reservoir.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it read the 540 ppm scale?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. It reads EC, ppm 500 (TDS) and ppm 700. If your feed chart uses the 540 scale, set the pen to EC and multiply the reading by 540 to convert.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy is my pen reading low?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eLow readings usually mean the probe is contaminated with nutrient salt build-up, not that the pen is faulty. Clean the probe face with Bluelab Conductivity Probe Cleaner or an unscented cream cleanser, rinse, and retest in a known solution.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat battery does it take?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eOne AAA alkaline battery, included, with around 350 hours of life. Don't use rechargeables — Bluelab specifies alkaline only.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eStop Guessing Your Nutrient Strength\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eBluelab accuracy, backed by a 1-year warranty. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52066895528234', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52066895528234,"sku":"BL-MTR-ECPEN","price":159.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Conductivity-Pen-by-Bluelab-Fast-Accurate-EC-PPM-Temperature-Testing.png?v=1787635565"},{"product_id":"bluelab-ph-conductivity-starter-pack","title":"pH \u0026 Conductivity Starter Pack by Bluelab — Complete pH, EC \u0026 Temperature Testing Kit","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab pH and Conductivity Starter Pack puts the two measurements every grower needs in one box: pH tells you whether your plants can actually absorb their food, EC tells you how much food is in the water. You get the Bluelab pH Pen, the Bluelab Conductivity Pen, and the full Probe Care Kit with everything needed to hydrate, calibrate, clean and store both pens — plus access to the Bluelab Grow Book. One purchase, complete reservoir control from day one.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eBoth Fundamentals Covered\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH, EC\/ppm and temperature from two purpose-built pens — the complete picture of your nutrient solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eCare Kit Included\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH 7.0 and 4.0 calibration sachets, KCl storage solution, 2.77 EC standard, probe cleaners, cups and brush — no extra purchases to get started properly.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFully Waterproof, They Float\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBoth pens are built for nutrient reservoirs — drop one in and fish it out, no damage done.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eBetter Value Than Pens Alone\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe pH Pen can't take its first reading without KCl and calibration solutions — buy the pens bare and you're buying those anyway. Here the full care kit is in the box for a few dollars more.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab pH Pen\u003c\/strong\u003e\u003cbr\u003epH and temperature meter, double-junction probe\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab Conductivity Pen\u003c\/strong\u003e\u003cbr\u003eEC, ppm 500 (TDS), ppm 700 and temperature meter\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab Probe Care Kit (pH \u0026amp; Conductivity)\u003c\/strong\u003e\u003cbr\u003epH 7.0, pH 4.0 and KCl storage solution sachets, 2.77 EC standard solution, probe cleaners, cleaning instruments and cups\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBluelab Grow Book\u003c\/strong\u003e\u003cbr\u003eAccess to Bluelab's growing guide, built from 30+ years of experience\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Pen range\u003c\/strong\u003e\u003cbr\u003e0.0–14.0 pH, ±0.1 pH accuracy at 25°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Pen probe\u003c\/strong\u003e\u003cbr\u003eDouble-junction, not replaceable\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Pen calibration\u003c\/strong\u003e\u003cbr\u003eManual 2-point (pH 7.0 first, then 4.0 or 10.0), 30-day calibration reminder on screen\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConductivity Pen range\u003c\/strong\u003e\u003cbr\u003e0.0–10.0 EC \/ 0–5000 ppm (500) \/ 0–7000 ppm (700), ±0.1 EC accuracy\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConductivity Pen calibration\u003c\/strong\u003e\u003cbr\u003eFactory calibrated — manual calibration optional\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003cbr\u003e0–50°C on both pens, Automatic Temperature Compensation\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBuild\u003c\/strong\u003e\u003cbr\u003eFully waterproof, backlit LCD, hold function, auto off — both pens\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower\u003c\/strong\u003e\u003cbr\u003e1 x AAA alkaline per pen (approx. 350 hours each)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003e1-year limited warranty on both pens\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade by\u003c\/strong\u003e\u003cbr\u003eBluelab, New Zealand\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — The pH Pen Probe Must Never Dry Out\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eBluelab's manual puts it bluntly: if it dries, it dies. Before first use, stand the pH Pen upright in a small container with enough KCl storage solution (included in your care kit) to submerge the probe tip, and soak for at least 24 hours. Never use RO, distilled or deionised water — pure water kills the probe.\u003c\/li\u003e\n\u003cli\u003eEvery week, add 3–5 drops of KCl solution into the wetting seal inside the storage cap, and always rinse the probe in fresh water before recapping after use.\u003c\/li\u003e\n\u003cli\u003eThe Conductivity Pen needs none of this — no glass bulb, no hydration. Just rinse it after each use and clean the probe face fortnightly with the included cleaner or an unscented cream cleanser like Jif.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eGetting Started\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003eHydrate the pH Pen: remove the storage cap, stand the pen upright in a small container, add enough KCl storage solution to submerge the probe tip, and leave it for at least 24 hours. Rinse the tip in fresh water afterwards.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003eCalibrate the pH Pen to 2 points using the included sachets — always pH 7.0 first, then pH 4.0 (or 10.0 if your readings normally sit above 7). It won't hold calibration on 7.0 alone. Recalibrate after every clean, after battery changes, and when the on-screen check mark disappears at 30 days.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003eThe Conductivity Pen is factory calibrated — turn it on and start reading. If you ever want to verify it, clean the probe first, then check against the included 2.77 EC standard solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eDip both pens in your reservoir, wait for the readings to stabilise, and adjust your solution. Rinse both probes in fresh water after every use — recap the pH Pen, and give the EC probe face a proper clean every two weeks.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; Storage Solutions\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eRestock pH 7.0\/4.0 sachets, KCl storage solution and 2.77 EC standard when the care kit runs out.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/water-control\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Up \u0026amp; Down\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOnce you can measure pH, you need to adjust it — dosing solutions in the Water Control range.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/hydroponic-nutrients\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eNutrients\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eBase nutrients and additives — dial in exact EC targets instead of feeding blind.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/starter-kits-all\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eStarter Kits\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eSetting up a full grow? Browse complete starter kits for tents, lighting and nutrients.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the starter pack ready to use out of the box?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003ePartly. The Conductivity Pen is factory calibrated and ready immediately. The pH Pen needs a minimum 24-hour hydration soak in the included KCl storage solution, then a 2-point calibration with the included pH 7.0 and 4.0 sachets before its first reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat's included in the Probe Care Kit?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe pH and Conductivity care kit contains pH 7.0, pH 4.0 and KCl storage solution sachets, 2.77 EC standard solution, probe cleaners, cleaning instruments and plastic cups — everything to hydrate, calibrate, clean and store both pens.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pH Pen's probe replaceable?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The pH Pen uses a fixed double-junction probe. If you want a pen with a replaceable probe, look at the Bluelab pH PenPlus — when its probe eventually wears out you screw in a new one instead of replacing the pen.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eAre the pens waterproof?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, both pens are fully waterproof and float, provided the battery cap is fastened down with no gap between cap and body.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pack better value than buying the pens separately?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The pack costs only a few dollars more than the two pens alone and includes the full Probe Care Kit — the KCl storage solution and pH calibration sachets the pH Pen must have before its first reading, plus the 2.77 EC standard, probe cleaners and cups. Buy the pens bare and you're purchasing those solutions separately anyway.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often does the pH Pen need calibrating?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eCalibrate before first use, after every clean, after changing the battery, and whenever the check mark disappears from the screen — it fades 30 days after the last calibration as a built-in reminder. Always 2 points: pH 7.0 first, then 4.0 or 10.0.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eMeasure the Fundamentals From Day One\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eTwo Bluelab pens, full care kit, 1-year warranty on both. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52066922823978', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52066922823978,"sku":"BL-MTR-PENSTP","price":314.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Conductivity-Starter-Pack-by-Bluelab-Complete-pH-EC-Temperature-Testing-Kit.png?v=1787635568"},{"product_id":"bluelab-ph-probe-2m","title":"pH Probe by Bluelab — 2m BNC Replacement Probe for Bluelab Meters, Monitors \u0026 Controllers","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab pH Probe is the standard 2-metre BNC replacement probe for Bluelab meters, monitors and controllers. When your Guardian or pH Controller starts drifting and cleaning won't bring it back, this is the part you swap — a double-junction, gel-filled probe in a polycarbonate body, with the probe holder suction cup and a KCl-filled storage cap in the box. Connect it, calibrate it, and your readings are trustworthy again without replacing the whole unit.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFits Any Bluelab BNC Device\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eStandard BNC connector — push on, quarter turn, done. Compatible with Bluelab handheld meters, monitors and controllers that take a BNC probe.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDouble-Junction Longevity\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe double-junction Ag\/AgCl reference resists contamination, so the probe stays accurate longer in dirty nutrient solutions.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e2m Cable Reaches the Reservoir\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eTwo metres of cable with a waterproof joint puts the probe in the tank while the meter stays dry and readable.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eMounting Sorted\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eProbe holder with suction cup included — fix it to the reservoir wall at the right depth and leave it there.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasurement range\u003c\/strong\u003e\u003cbr\u003e0.0–14.0 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAccuracy at 25°C\u003c\/strong\u003e\u003cbr\u003e±0.1 pH\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eReference\u003c\/strong\u003e\u003cbr\u003eDouble junction, Ag\/AgCl, saturated KCl gel (non-refillable)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConnector\u003c\/strong\u003e\u003cbr\u003eStandard BNC, waterproof cable joint\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCable length\u003c\/strong\u003e\u003cbr\u003e2 metres \/ 6.5 feet\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBody\u003c\/strong\u003e\u003cbr\u003ePolycarbonate, waterproof probe\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOperating environment\u003c\/strong\u003e\u003cbr\u003e0–60°C \/ 32–144°F\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003cbr\u003eProbe holder with suction cup, KCl-filled storage cap\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003e6-month limited warranty\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade by\u003c\/strong\u003e\u003cbr\u003eBluelab, New Zealand\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — If It Dries, It Dies\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eThe probe tip must stay wet at all times. When it's not in the reservoir, keep the storage cap on with enough Bluelab KCl storage solution to cover the tip. Never use RO, distilled or deionised water — pure water changes the reference chemistry and kills the probe.\u003c\/li\u003e\n\u003cli\u003eIf the tip has dried out or hasn't been stored in KCl, clean it, then stand it in a container of KCl solution submerging the tip for at least 24 hours, and calibrate afterwards.\u003c\/li\u003e\n\u003cli\u003eHandle it like the glass instrument it is: always loosen the storage cap before pulling it off, don't bend or knock the probe, don't kink the lead, and never let the BNC connector get wet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Install and Calibrate\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003eConnect the probe to your meter, monitor or controller: line up the lugs of the BNC fitting, push on, and twist a quarter turn to lock.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003eRemove the storage cap: grip the top, twist the base one rotation to loosen, then slide the cap off slowly. Keep the cap and its KCl solution — you'll need it every time the probe comes out of the reservoir.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003eCalibrate before first use — no cleaning needed the very first time. Always 2 points: pH 7.0 first, then 4.0 (or 10.0 if your readings normally sit above 7). Rinse the tip in clean water between solutions, and calibrate at the same temperature as the solution you'll be measuring.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eRecalibrate monthly, and clean the probe first every time after that initial calibration. Also recalibrate whenever readings look off, after battery changes, or after the probe has been disconnected.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/bluelab\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBluelab Wi-Fi Guardian \u0026amp; pH Controller\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe devices this probe keeps honest — browse the full Bluelab range.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eCalibration \u0026amp; KCl Solutions\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH 7.0 and 4.0 standards for monthly calibration, KCl storage solution to keep the tip alive.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMeters \u0026amp; Pens\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eHandheld pH and EC testing for spot checks alongside your monitored reservoir.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/water-control\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eWater Control\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH Up and Down, dosing gear and reservoir hardware to act on the readings.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this probe fit the Bluelab Guardian and pH Controller?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It's compatible with Bluelab handheld meters, monitors and controllers that use a standard BNC probe connection, including the Guardian Monitor, pH Controller and Combo Meter.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it fit the Bluelab pH Pen or pH PenPlus?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The pens don't take a BNC probe — the pH Pen's probe is fixed, and the pH PenPlus uses its own screw-in pH ProbePlus, which we stock separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the probe need calibrating before use?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Calibrate before first use (no cleaning required for that initial calibration) and then monthly — always 2-point, pH 7.0 first, then 4.0 or 10.0. Clean the probe before every calibration after the first.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat warranty does it carry?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe Bluelab pH Probe carries a 6-month limited warranty with proof of purchase. pH probes are consumable glass instruments — they age with normal use, and lifespan depends heavily on storage and care.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy is my probe drifting or stuck on one reading?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eDrift usually means a contaminated or dried-out tip — clean it, hydrate it in KCl storage solution for 24 hours, and recalibrate. A probe that reads the same in every buffer has broken glassware and needs replacing. If it reads pH 7 for everything, check the BNC fitting and cable for damage or moisture first.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan the BNC connector get wet?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The probe and cable joint are waterproof, but the BNC connector at the meter end must stay dry — a wet fitting causes false readings and isn't covered under warranty.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eBring Your Bluelab Back to Accurate\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eGenuine Bluelab replacement probe, holder and KCl cap included. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/bluelab\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Bluelab\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52067085812010', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52067085812010,"sku":"BL-MTR-PROBE-PH-2M","price":129.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Probe-by-Bluelab-2m-BNC-Replacement-Probe-for-Bluelab-Meters-Monitors-Controllers.png?v=1787635578"},{"product_id":"bluelab-probe-care-kit-ph-conductivity","title":"Probe Care Kit – pH \u0026 Conductivity by Bluelab — Clean, Calibrate \u0026 Restore Accurate Probe Readings","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Bluelab Probe Care Kit – pH \u0026amp; Conductivity is the complete service kit for your pH and EC meters in one box. Nutrient salts, oils and organic matter build up on probe faces over time, and a dirty probe reads wrong — which means your whole feed chart is working off bad numbers. This kit gives you both probe cleaners, calibration and storage solutions, and the cleaning tools to bring your readings back to accurate and keep them there. One monthly service takes about as long as brushing your teeth.\u003c\/p\u003e\n\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #c0392b; display: block; margin-bottom: 0.5rem;\"\u003eOnePen Owners — Read This First\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.93rem; line-height: 1.6;\"\u003eThe Conductivity Probe Cleaner in this kit is not compatible with the Bluelab OnePen (PENONE) or its Replacement Probe (PROBONE). Everything else in the kit — pH cleaner, calibration sachets, KCl storage solution — is fine to use with the OnePen. Never soak a OnePen's titanium EC electrodes in cleaning solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFull Service In One Box\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCleaners, calibration sachets, KCl storage solution, brush, chamois and cups — nothing else to buy for a complete probe service.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eRestores Reading Accuracy\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRemoves the salt and residue build-up that causes pH drift and low EC readings, so your meter tells you the truth.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eProper 2-Point Calibration\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eTwo sachets each of pH 7.0 and pH 4.0 — enough for two full calibrations done the way Bluelab specifies.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eExtends Probe Life\u003c\/strong\u003e\n\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRegular cleaning and correct KCl storage is the difference between a probe that lasts and one you replace every season.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eWhat's In The Kit\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH Probe Cleaner:\u003c\/strong\u003e 1 x 30ml bottle\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConductivity Probe Cleaner:\u003c\/strong\u003e 1 x 30ml bottle\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH 7.0 Calibration Solution:\u003c\/strong\u003e 2 x 18ml sachets\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH 4.0 Calibration Solution:\u003c\/strong\u003e 2 x 18ml sachets\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e2.77 EC Standard Solution:\u003c\/strong\u003e 2 x 18ml sachets\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eKCl Storage Solution:\u003c\/strong\u003e 2 x 18ml sachets\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCleaning Tools:\u003c\/strong\u003e Toothbrush (pH) \u0026amp; chamois (EC)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAlso Included:\u003c\/strong\u003e 3 plastic cups \u0026amp; care instructions\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Bluelab (New Zealand)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e Bluelab pens, meters, monitors \u0026amp; controllers\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tips\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eService monthly. If your EC reading looks low, that is the classic sign the conductivity probe needs a clean.\u003c\/li\u003e\n\u003cli\u003epH calibration is always 2-point: pH 7.0 first, then pH 4.0. A single-point calibration will not hold.\u003c\/li\u003e\n\u003cli\u003eEC probes are never calibrated — the 2.77 EC solution is for verifying your probe reads true after cleaning.\u003c\/li\u003e\n\u003cli\u003eStore pH probes wet in KCl storage solution. Never in RO, distilled or deionised water — it will damage the probe.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow To Service Your Probes\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cspan\u003eRinse both probes in fresh tap water. Never rub or wipe a pH probe face — it holds a static charge that rubbing destroys.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cspan\u003eClean the pH probe with pH Probe Cleaner using the supplied toothbrush, working gently around the glass bulb and junction.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cspan\u003eClean the conductivity probe with Conductivity Probe Cleaner and the chamois. Skip this cleaner entirely if your meter is a OnePen.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cspan\u003eRinse both probes again in fresh tap water to remove all cleaner residue.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\n\u003cspan\u003eCalibrate the pH probe in the supplied cups: pH 7.0 solution first, then pH 4.0. Follow your meter's calibration prompts.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\n\u003cspan\u003eDip the conductivity probe in 2.77 EC standard solution and check it reads 2.77. If it does, the clean worked.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e7\u003c\/span\u003e\n\u003cspan\u003eStore the pH probe with its tip wet in KCl storage solution until the next use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH \u0026amp; EC Meters \u0026amp; Pens\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe pens and meters this kit keeps accurate — Bluelab and more.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Control \u0026amp; Calibration\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eLarger bottles of calibration, storage and cleaning solutions for restocking.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003ca href=\"\/collections\/water-control\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\n\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eWater Control\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEverything for dialling in your reservoir — monitors, dosers and more.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this kit work with all Bluelab pH and EC meters?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, with one exception — the Conductivity Probe Cleaner is not compatible with the Bluelab OnePen (PENONE) or its Replacement Probe (PROBONE). The calibration sachets, KCl storage solution and pH Probe Cleaner suit the full Bluelab range, including pens, Combo Meters, Guardian Monitors and controllers.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need to calibrate my conductivity probe?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Bluelab conductivity probes are factory calibrated and never need recalibrating. The 2.77 EC standard solution in this kit is for testing — dip the clean probe in it and if it reads 2.77, your probe is accurate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I store my pH probe in distilled or RO water?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Pure water pulls ions out of the glass bulb and reference junction, which causes drift and can permanently damage the probe. Always store pH probes with the tip wet in KCl storage solution — that is exactly what the KCl sachets in this kit are for.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I service my probes?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eMonthly is Bluelab's recommendation for a full clean, calibrate and test. Clean sooner if readings look sluggish or your EC probe starts reading low — that is the tell-tale sign of build-up on the probe face.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWill this kit work on non-Bluelab meters?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, mostly. The pH 4.0 and 7.0 calibration solutions, 2.77 EC standard and KCl storage solution are standard reference solutions that suit most glass-bulb pH probes and EC meters. Check your meter's manual for its cleaning requirements before using the probe cleaners on other brands.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eYour Meter Is Only As Accurate As Its Probe Is Clean\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eOne kit, one monthly service, accurate readings all season. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH \u0026amp; EC Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52067198533930', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52067198533930,"sku":"BL-MTR-CAREKIT-PHCON","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Probe-Care-Kit-pH-Conductivity-by-Bluelab-Clean-Calibrate-Restore-Accurate-Probe-Readings.png?v=1787635595"},{"product_id":"flairform-electrode-cleaner","title":"Electrode Cleaner by Flairform — pH \u0026 EC Probe Cleaning Solution","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eFlairform Electrode Cleaner is a 250ml cleaning solution made specifically for pH and conductivity (EC) meter probes used in hydroponics. Most electrode cleaners are built from acids, alkalis or chelates — chemistry that does little against the contamination probes pick up from nutrient solutions. This one is formulated for exactly that job. A five-minute soak removes both organic and inorganic buildup, restores accuracy and response time, and in many cases means you won't need to re-calibrate afterwards.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eWorks on pH and EC Probes\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eOne bottle covers both electrode types — clean your pH pen and conductivity meter with the same solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eBuilt for Nutrient Contamination\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRemoves the organic and inorganic buildup nutrient solutions leave behind — the fouling that generic cleaners struggle to shift.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNo Rest Time After Cleaning\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnlike other cleaners, the electrode goes straight back to work after its soak — no waiting period before measuring.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eExtends Electrode Life\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eRegular cleaning maximises probe lifespan and keeps response time sharp — cheaper than replacing probes early.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 250ml\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e pH and conductivity (EC) electrodes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eContact time:\u003c\/strong\u003e 5-minute soak\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhen to use:\u003c\/strong\u003e Prior to checking calibration\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Australia (Flairform, WA)\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Protect Your Probes Between Cleans\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eAvoid dipping electrodes in oily solutions — they coat the sensing surface and cause slow, drifting readings.\u003c\/li\u003e\n\u003cli\u003eNever measure or leave probes sitting in harsh concentrates like raw nutrient, pH Up or silica additives. These damage electrodes faster than anything else in the grow room.\u003c\/li\u003e\n\u003cli\u003eClean before you check calibration, not after — a fouled probe will calibrate to bad numbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cdiv\u003ePour enough Electrode Cleaner into a clean container to cover the probe tip.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cdiv\u003eSoak the electrode for 5 minutes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cdiv\u003eCheck calibration against your buffer or standard solution. In many cases the clean alone restores accuracy — re-calibrate only if the reading is still out.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cdiv\u003eReturn the probe to service — no rest period required. Store pH probes in storage solution as usual between uses.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-ph-electrode-storage\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Electrode Storage\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eStore the probe properly after cleaning — KCl storage solution keeps the electrode hydrated and reading fast between uses.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCheck calibration after every clean — Buffer 7.0 is the first point in a two-point calibration.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-conductivity-standard\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Conductivity Standard\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eVerify your EC probe at the same time — 2.76 mS\/cm reference for checking conductivity meters after a clean.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes Flairform Electrode Cleaner work on both pH and EC probes?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It is formulated for both pH and conductivity (EC) meter electrodes, so one bottle covers every probe in your grow room.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I still need to calibrate after cleaning?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNot always. Flairform designed this cleaner so that in many situations a clean restores accuracy without re-calibration. Check the probe against a buffer or standard solution after the soak — if it reads true, you're done.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long do I soak the electrode?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eFive minutes. Unlike some cleaners, the electrode needs no rest time afterwards — it can go straight back to measuring.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I clean my probes?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eFlairform recommends cleaning prior to checking calibration. If your readings are slow to settle or drifting, that's the probe telling you it's due for a clean.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy not just use a general-purpose electrode cleaner?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eMost electrode cleaners are made from acids, alkalis or chelates, and those chemistries are largely ineffective against contamination from hydroponic nutrient solutions. This cleaner is built specifically for that type of fouling.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eSlow, Drifting Readings? Clean the Probe First\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eA five-minute soak beats a new probe. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52071636926762', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"Default Title","offer_id":52071636926762,"sku":"FF-MTR-CLEAN-250","price":12.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Electrode-Cleaner-by-Flairform-pH-EC-Probe-Cleaning-Solution.png?v=1787635603"},{"product_id":"flairform-ph-electrode-storage","title":"pH Electrode Storage by Flairform — pH Probe Storage Solution","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eFlairform pH Electrode Storage is a 250ml solution for keeping pH probes hydrated between uses. Dry storage is the most common cause of pH meter failure in hydroponics — the glass electrode and porous frit dry out, readings start to drift, and the probe dies years before its time. Submerse the electrode tip in this solution whenever the meter is not in use and it stays accurate, responsive and working for the long haul.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003ePrevents Dry-Out Failure\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eKeeps the glass electrode and porous frit hydrated — protection against the number one killer of pH meters in hydro.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eEliminates Reading Drift\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eProperly stored probes hold their calibration — no more chasing numbers that wander between checks.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eMaximises Electrode Life\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH electrodes last several years when stored properly — a $13 bottle beats replacing a $100+ probe early.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFormulated for Storage\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eA carefully structured formulation that won't interfere with the electrode's internal filling solution — unlike buffers or distilled water.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 250ml\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e Standard glass-bulb pH electrodes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUsage:\u003c\/strong\u003e Submerse electrode tip when not in use\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSolution pH:\u003c\/strong\u003e 7 (neutral, non-corrosive)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Non-hazardous, non-dangerous good\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — What Never to Store a pH Probe In\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eNever store probes dry — dehydration of the glass and frit is the fastest way to wreck a pH meter.\u003c\/li\u003e\n\u003cli\u003eNever store probes in pH buffers or distilled water. Both can upset electrode calibration by interfering with the filling solution inside the probe.\u003c\/li\u003e\n\u003cli\u003eKeep the bottle closed and in a cool, dark spot between top-ups to stop contamination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cdiv\u003eRinse the probe after measuring your nutrient solution.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cdiv\u003eFill the probe's storage cap or a small container with pH Electrode Storage solution.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cdiv\u003eSubmerse the electrode tip in the solution whenever the meter is not in use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cdiv\u003eTop up or replace the solution when it looks low or dirty — a clean reservoir keeps the probe protected.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-electrode-cleaner\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Electrode Cleaner\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eClean before you store — a five-minute soak removes the nutrient buildup that storage solution can't.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFirst calibration point after any storage period — always check at 7.0 before 4.0.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-buffer-4\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 4.0\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe second calibration point — two-point calibration is the only way a stored probe reads true again.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I store my pH probe in distilled water instead?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Flairform is explicit on this: pH buffers and distilled water are not suitable for storing pH electrodes as they can upset electrode calibration. Storage solutions are structured so they don't interfere with the liquid or gel inside the electrode.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this work with Bluelab and other brand pH meters?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, it suits standard glass-bulb pH electrodes across brands. One caveat: if your meter's manufacturer specifies its own storage solution in the manual — Bluelab specifies KCl solution for its probes, for example — follow the manual for that meter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy did my pH meter stop reading accurately?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eDry storage is the most common cause of pH meter failure in hydroponics. When the glass electrode and porous frit dehydrate, readings drift and response slows. Storing the probe tip in solution prevents it.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs this solution hazardous to handle?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Per the safety data sheet it is non-hazardous, non-corrosive and classified as a non-dangerous good — a neutral pH 7 aqueous solution with no PPE required in normal use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use this to store EC probes too?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo, it's not needed. This solution is for pH electrodes, which have a glass bulb that must stay hydrated. Conductivity probes don't have one and are generally stored dry and clean — check your EC meter's manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eDry Probes Die Young\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eStore it wet, keep it accurate. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e \u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52071648133418', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"Default Title","offer_id":52071648133418,"sku":"FF-MTR-STOR-250","price":12.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Electrode-Storage-by-Flairform-pH-Probe-Storage-Solution.png?v=1787635604"},{"product_id":"flairform-conductivity-standard","title":"Conductivity Standard by Flairform — 2.76 EC Calibration Solution for EC, cF \u0026 TDS Meters","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eFlairform Conductivity Standard is a calibration solution for conductivity (EC), cF and TDS meters, made to 2.76 mS\/cm (cF 27.6) at 25°C. Regular calibration is what keeps your nutrient readings honest — a meter that's drifted reads low, and you end up overfeeding without knowing it. Formulated with NIST-specified ingredients and stabilised against algae growth for a long, contamination-free shelf life. Available in 250ml and 1L.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNIST-Specified Ingredients\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eMade to the internationally agreed recipe — your meter calibrates against a genuine reference, not an approximation.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eStabilised Against Algae\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eGrowths contaminate electrodes and distort calibration. This standard resists them for exceptional shelf life.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eEC, cF and TDS Meters\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eOne standard covers conductivity meters however they read out — Flairform publishes a ppm conversion chart for Hanna, Truncheon and Eutech TDS meters.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFewer Calibrations Needed\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eWith clean, well-stored electrodes, quality conductivity gear only needs calibrating a few times a year.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 250ml and 1L\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eStandard value:\u003c\/strong\u003e 2.76 mS\/cm (cF 27.6) at 25°C \/ 77°F\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e Conductivity (EC), cF and TDS meters\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFormulation:\u003c\/strong\u003e NIST-specified ingredients\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Stabilised to resist algae and growth formation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Check Your Meter's Standard First\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eEC calibration standards differ between manufacturers — this is a 2.76 mS\/cm standard, while Bluelab specifies 2.77, for example. Always check what standard your meter's manual calls for before choosing a solution.\u003c\/li\u003e\n\u003cli\u003eClean the electrode with Electrode Cleaner before calibrating. A fouled probe upsets the linearity of readings either side of the standard's value — you'd be calibrating to bad numbers.\u003c\/li\u003e\n\u003cli\u003eIf the meter keeps drifting out of calibration, that's the electrode telling you it needs a clean, not more calibrating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cdiv\u003eClean the electrode with Electrode Cleaner and rinse — calibration only holds on a clean probe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cdiv\u003ePour a small amount of Conductivity Standard into a clean container — never dip into the bottle, it contaminates the rest.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cdiv\u003ePlace the probe in the solution and calibrate or verify against 2.76 mS\/cm (cF 27.6) per your meter's manual, ideally at 25°C.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cdiv\u003eDiscard the used solution, rinse the probe and store it properly. Repeat a few times a year or whenever readings drift.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-electrode-cleaner\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Electrode Cleaner\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFlairform's own rule: clean before you calibrate. Five-minute soak, no rest time.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCalibrate pH in the same session — one sitting keeps both your EC and pH numbers trustworthy.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/collections\/ph-and-e-c-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMeters \u0026amp; Pens – pH \u0026amp; EC Testing\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEC pens, combo meters and monitors — check your meter's specified standard before choosing a solution.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWill this work with my Bluelab meter?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo — check your manual first. Bluelab specifies a 2.77 mS\/cm standard and its EC probes are factory calibrated, using the standard as a verification check only. This is a 2.76 mS\/cm standard, so it suits meters that call for that value. Always match the solution to the standard your meter's manufacturer specifies.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat does 2.76 mS\/cm mean in cF and ppm?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003e2.76 mS\/cm equals cF 27.6 at 25°C. For ppm the answer depends on your TDS meter's conversion factor — Flairform publishes a conversion chart covering Hanna, Truncheon and Eutech meters on their downloads page.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate my EC meter?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eOnly a few times per year, provided the electrode is rinsed after each use and stored properly. If the meter drifts out of calibration faster than that, the electrode needs cleaning — contamination reduces the probe's effective surface area and drags readings low.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy do I need to clean the probe before calibrating?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBecause a coated electrode upsets the linearity (slope) of readings either side of the standard's value. You'd lock in an error across your whole measuring range. Clean with Electrode Cleaner first, then calibrate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes temperature matter when calibrating?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The standard reads 2.76 mS\/cm at 25°C (77°F). Many meters compensate for temperature automatically, but letting the solution and probe sit at room temperature before calibrating gives the most reliable result.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eA Drifted Meter Feeds Your Plants Wrong\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eCalibrate against a real standard. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"margin: 0 0 1.5rem;\"\u003e\n\u003cp style=\"font-size: 0.95rem; font-weight: bold; margin-bottom: 0.75rem; color: #fff;\"\u003eSelect Size\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap;\"\u003e\n\u003cbutton data-variant-id=\"52071670382890\" class=\"tgg-size-btn-ff-ec276\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: #fff; color: #1c3a1c; font-size: 0.95rem; font-weight: bold; cursor: pointer;\"\u003e250ml — $12.95\u003c\/button\u003e \u003cbutton data-variant-id=\"52071670415658\" class=\"tgg-size-btn-ff-ec276\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: transparent; color: #fff; font-size: 0.95rem; font-weight: 600; cursor: pointer;\"\u003e1L — $24.95\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e \u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n\n  var selectedVariantId = '52071670382890';\n\n  var sizeBtns = document.querySelectorAll('.tgg-size-btn-ff-ec276');\n  sizeBtns.forEach(function(b) {\n    b.addEventListener('click', function() {\n      selectedVariantId = this.getAttribute('data-variant-id');\n      sizeBtns.forEach(function(ob) {\n        ob.style.background = 'transparent';\n        ob.style.color = '#fff';\n        ob.style.fontWeight = '600';\n      });\n      this.style.background = '#fff';\n      this.style.color = '#1c3a1c';\n      this.style.fontWeight = '700';\n    });\n  });\n\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt(selectedVariantId, 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"250ml","offer_id":52071670382890,"sku":"FF-MTR-EC276-250","price":12.95,"currency_code":"AUD","in_stock":true},{"title":"1L","offer_id":52071670415658,"sku":"FF-MTR-EC276-1L","price":24.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/Conductivity-Standard-by-Flairform-2_76-EC-Calibration-Solution-for-EC-cF-TDS-Meters.png?v=1787635605"},{"product_id":"flairform-ph-buffer-4","title":"pH Buffer 4.0 by Flairform — pH Meter Calibration Solution","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eFlairform pH Buffer 4.0 is a calibration solution for pH meters, made to the internationally agreed recipe with NIST-specified ingredients. pH meters must be calibrated regularly to stay accurate — and professional practice calls for two buffers, not one. Paired with pH Buffer 7.0, this gives you a true 2-point calibration that confirms your electrode and meter are ranging correctly across the whole scale. Stabilised against algae growth for exceptional shelf life. Available in 250ml and 1L.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNIST-Specified Ingredients\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFormulated to the internationally agreed buffer recipe — your meter calibrates against a genuine analytical reference.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eHalf of the Ideal 2-Point Pair\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBuffers 4.0 and 7.0 are the ideal calibration standards for nutrient solutions — three pH units apart, confirming the slope.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eStabilised Against Algae\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eGrowths contaminate electrodes and distort calibration. This buffer resists them for exceptional shelf life.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eSafe to Handle\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eNon-hazardous, non-corrosive and a non-dangerous good per the safety data sheet — no PPE needed in normal use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 250ml and 1L\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBuffer value:\u003c\/strong\u003e pH 4.0\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Potassium hydrogen phthalate (aqueous)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhen to use:\u003c\/strong\u003e Calibrating pH electrodes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Non-hazardous, non-corrosive, non-dangerous good\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Calibrate Like a Lab\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eAlways calibrate 2-point: pH 7.0 first, then 4.0. Single-point calibration on 7.0 alone can't confirm the slope — some meter brands claim it's enough, professional practice says otherwise.\u003c\/li\u003e\n\u003cli\u003eNever dip the probe into the bottle. Decant a small amount into a clean cup and discard it after use — dipping contaminates the whole bottle.\u003c\/li\u003e\n\u003cli\u003eKeep the bottle closed and stored cool and dark. Contaminated or degraded buffer means calibrating to a wrong reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cdiv\u003eClean the electrode first — a fouled probe calibrates to bad numbers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cdiv\u003eCalibrate the first point in pH Buffer 7.0 per your meter's manual, then rinse the probe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cdiv\u003eCalibrate the second point in a decanted sample of this pH Buffer 4.0.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cdiv\u003eDiscard the used buffer, rinse the probe and return it to storage solution. Recalibrate on your meter's schedule or whenever readings drift.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe other half of the 2-point calibration — always calibrate 7.0 first, then 4.0.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-electrode-cleaner\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Electrode Cleaner\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eClean before you calibrate — a fouled probe upsets the slope either side of the buffer values.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-up\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Up\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOnce the meter reads true, adjust the reservoir with confidence — pH Up lifts solution that's drifted low.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need both pH Buffer 4.0 and 7.0?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It is essential to calibrate with at least two buffers differing by three or more pH units. Two-point calibration confirms the correct slope — that both the electrode and meter are ranging correctly. For nutrient solutions, 4.0 and 7.0 are the ideal pair.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eMy meter says calibrating with 7.0 only is fine — is it?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo, not by professional standards. Some manufacturers claim single-point 7.0 calibration is enough, but professional practice stipulates two buffers because one point can't verify the slope. A meter that reads 7.0 correctly can still be wrong at 5.8 — exactly where your nutrient solution sits.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhich buffer do I calibrate with first?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003epH 7.0 first, then 4.0. The neutral point sets the offset, the second point sets the slope. Rinse the probe between buffers so you don't carry one into the other.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I store my pH probe in this buffer between uses?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. pH buffers are not suitable for storing pH electrodes — they can upset electrode calibration. Use a dedicated storage solution like Flairform pH Electrode Storage instead.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs this buffer hazardous?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Per the safety data sheet it is non-hazardous, non-corrosive and a non-dangerous good — a dilute potassium hydrogen phthalate solution requiring no PPE in normal use. Keep it out of waterways, as it promotes algae growth.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eOne Buffer Can't Confirm the Slope\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eCalibrate 2-point like the labs do. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"margin: 0 0 1.5rem;\"\u003e\n\u003cp style=\"font-size: 0.95rem; font-weight: bold; margin-bottom: 0.75rem; color: #fff;\"\u003eSelect Size\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap;\"\u003e\n\u003cbutton data-variant-id=\"52071711473962\" class=\"tgg-size-btn-ff-ph4\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: #fff; color: #1c3a1c; font-size: 0.95rem; font-weight: bold; cursor: pointer;\"\u003e250ml — $12.95\u003c\/button\u003e \u003cbutton data-variant-id=\"52071711506730\" class=\"tgg-size-btn-ff-ph4\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: transparent; color: #fff; font-size: 0.95rem; font-weight: 600; cursor: pointer;\"\u003e1L — $24.95\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e \u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n\n  var selectedVariantId = '52071711473962';\n\n  var sizeBtns = document.querySelectorAll('.tgg-size-btn-ff-ph4');\n  sizeBtns.forEach(function(b) {\n    b.addEventListener('click', function() {\n      selectedVariantId = this.getAttribute('data-variant-id');\n      sizeBtns.forEach(function(ob) {\n        ob.style.background = 'transparent';\n        ob.style.color = '#fff';\n        ob.style.fontWeight = '600';\n      });\n      this.style.background = '#fff';\n      this.style.color = '#1c3a1c';\n      this.style.fontWeight = '700';\n    });\n  });\n\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt(selectedVariantId, 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"250ml","offer_id":52071711473962,"sku":"FF-MTR-PH4-250","price":12.95,"currency_code":"AUD","in_stock":true},{"title":"1L","offer_id":52071711506730,"sku":"FF-MTR-PH4-1L","price":24.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Buffer-4_0-by-Flairform-pH-Meter-Calibration-Solution.png?v=1787635608"},{"product_id":"flairform-ph-buffer-7","title":"pH Buffer 7.0 by Flairform — pH Meter Calibration Solution","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eFlairform pH Buffer 7.0 is a calibration solution for pH meters, made to the internationally agreed recipe with NIST-specified ingredients. It's the first point in every proper calibration — the neutral reference that sets your meter's offset before pH Buffer 4.0 confirms the slope. Professional practice calls for both: two buffers at least three pH units apart, so you know the electrode and meter are ranging correctly. Stabilised against algae growth for exceptional shelf life. Available in 250ml and 1L.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNIST-Specified Ingredients\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFormulated to the internationally agreed buffer recipe — your meter calibrates against a genuine analytical reference.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eThe First Calibration Point\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eEvery 2-point calibration starts at 7.0 — the neutral reference that sets the offset before 4.0 confirms the slope.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eStabilised Against Algae\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eGrowths contaminate electrodes and distort calibration. This buffer resists them for exceptional shelf life.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eSafe to Handle\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eNon-hazardous, non-corrosive and a non-dangerous good per the safety data sheet — no PPE needed in normal use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 250ml and 1L\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBuffer value:\u003c\/strong\u003e pH 7.0\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Potassium \u0026amp; sodium phosphate (aqueous)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhen to use:\u003c\/strong\u003e Calibrating pH electrodes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Non-hazardous, non-corrosive, non-dangerous good\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Calibrate Like a Lab\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eAlways calibrate 2-point: this pH 7.0 first, then 4.0. Single-point calibration on 7.0 alone can't confirm the slope — some meter brands claim it's enough, professional practice says otherwise.\u003c\/li\u003e\n\u003cli\u003eNever dip the probe into the bottle. Decant a small amount into a clean cup and discard it after use — dipping contaminates the whole bottle.\u003c\/li\u003e\n\u003cli\u003eKeep the bottle closed and stored cool and dark. Contaminated or degraded buffer means calibrating to a wrong reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\n\u003cdiv\u003eClean the electrode first — a fouled probe calibrates to bad numbers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\n\u003cdiv\u003eDecant a small amount of this pH Buffer 7.0 and calibrate the first point per your meter's manual, then rinse the probe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\n\u003cdiv\u003eCalibrate the second point in pH Buffer 4.0 to confirm the slope.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: bold; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\n\u003cdiv\u003eDiscard the used buffer, rinse the probe and return it to storage solution. Recalibrate on your meter's schedule or whenever readings drift.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-4\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 4.0\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe other half of the 2-point calibration — 7.0 sets the offset, 4.0 confirms the slope.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-electrode-storage\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Electrode Storage\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eAfter calibrating, store the probe in solution — never dry, never in buffer.\u003c\/p\u003e\n\u003c\/a\u003e\u003ca href=\"\/products\/flairform-ph-down\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Down\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eMost hydro reservoirs drift high — with a calibrated meter, pH Down brings them back to range accurately.\u003c\/p\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 1.1rem; font-weight: bold; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs calibrating with pH Buffer 7.0 alone enough?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Some manufacturers claim their meters only need 7.0, but professional practice stipulates two buffers at least three pH units apart. One point sets the offset but can't verify the slope — a meter that reads 7.0 correctly can still be wrong at 5.8, exactly where your nutrient solution sits.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhich buffer do I use first, 7.0 or 4.0?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003e7.0 first, always. The neutral point sets the meter's offset, then 4.0 sets the slope. Rinse the probe between buffers so you don't carry one into the other.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I store my pH probe in this buffer between uses?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. pH buffers are not suitable for storing pH electrodes — they can upset electrode calibration. Use a dedicated storage solution like Flairform pH Electrode Storage instead.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow often should I calibrate my pH meter?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eFollow your meter's manual, and recalibrate any time readings drift or respond slowly. Well-maintained probes stored in proper solution hold calibration far longer than probes stored dry.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs this buffer hazardous?\u003c\/summary\u003e\n\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Per the safety data sheet it is non-hazardous, non-corrosive and a non-dangerous good — a dilute phosphate solution requiring no PPE in normal use. Keep it out of waterways, as it promotes algae growth.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eEvery Calibration Starts at 7.0\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eSet the offset, then confirm the slope. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"margin: 0 0 1.5rem;\"\u003e\n\u003cp style=\"font-size: 0.95rem; font-weight: bold; margin-bottom: 0.75rem; color: #fff;\"\u003eSelect Size\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap;\"\u003e\n\u003cbutton data-variant-id=\"52071712227626\" class=\"tgg-size-btn-ff-ph7\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: #fff; color: #1c3a1c; font-size: 0.95rem; font-weight: bold; cursor: pointer;\"\u003e250ml — $12.95\u003c\/button\u003e \u003cbutton data-variant-id=\"52071712260394\" class=\"tgg-size-btn-ff-ph7\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #fff; border-radius: 6px; background: transparent; color: #fff; font-size: 0.95rem; font-weight: 600; cursor: pointer;\"\u003e1L — $24.95\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e \u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n\n  var selectedVariantId = '52071712227626';\n\n  var sizeBtns = document.querySelectorAll('.tgg-size-btn-ff-ph7');\n  sizeBtns.forEach(function(b) {\n    b.addEventListener('click', function() {\n      selectedVariantId = this.getAttribute('data-variant-id');\n      sizeBtns.forEach(function(ob) {\n        ob.style.background = 'transparent';\n        ob.style.color = '#fff';\n        ob.style.fontWeight = '600';\n      });\n      this.style.background = '#fff';\n      this.style.color = '#1c3a1c';\n      this.style.fontWeight = '700';\n    });\n  });\n\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt(selectedVariantId, 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"250ml","offer_id":52071712227626,"sku":"FF-MTR-PH7-250","price":12.95,"currency_code":"AUD","in_stock":true},{"title":"1L","offer_id":52071712260394,"sku":"FF-MTR-PH7-1L","price":24.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Buffer-7_0-by-Flairform-pH-Meter-Calibration-Solution.png?v=1787635610"},{"product_id":"flairform-ph-test-kit","title":"pH Test Kit by Flairform — Liquid pH Tester for Hydroponics (800 Tests)","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe Flairform pH Test Kit is a liquid indicator for testing nutrient pH in hydro, coco and soil — no batteries, no calibration, no probe maintenance. One to two drops per test gives a fast, reliable reading across pH 4.5 to 9.0, matched against the waterproof colour chart printed on the bottle. One 30ml bottle delivers up to 800 tests, and a sturdy test tube is included. It's the simplest way to check pH, and the smartest back-up for cross-checking an electronic meter.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eUp to 800 Tests per Bottle\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eOne to two drops per test from a 30ml bottle — a couple of cents per pH check, no consumable probes or batteries.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNo Calibration, No Maintenance\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnlike electronic pH meters, there are no buffers, storage solutions or electrode care — it just works, every time.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eWide pH 4.5–9.0 Range\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eCovers the full nutrient window and beyond, read against a waterproof colour chart printed on the bottle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eThe Meter Cross-Check\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eEven well-maintained electronic meters can drift. Many growers keep a drop kit to verify their pen's readings.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; margin-bottom: 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Flairform\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 30ml dropper bottle\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 4.5 to 9.0\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDosage:\u003c\/strong\u003e 1–2 drops per test (up to 800 tests)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Sturdy test tube, waterproof colour chart on bottle\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e Hydro, coco and soil nutrient testing\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem;\"\u003e\n\u003cstrong style=\"color: #e65100; display: block; margin-bottom: 0.5rem;\"\u003eGrow Guys Tip — Get a True Colour Read\u003c\/strong\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eCompare the tube against the chart in natural or white light — coloured grow room light (especially HPS or blurple LED) will throw the colour match right off. Step outside the tent.\u003c\/li\u003e\n\u003cli\u003eRinse the test tube with clean water after every test. Nutrient residue in the tube skews the next reading.\u003c\/li\u003e\n\u003cli\u003eKeep the bottle capped with the dropper nipple in place and store it cool and dark, away from ignition sources — the indicator is alcohol-based.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eHow to Use\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cdiv\u003eStir your nutrient solution well, then fill the supplied test tube with a sample.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cdiv\u003eAdd 1–2 drops of indicator and give the tube a gentle swirl.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cdiv\u003eMatch the colour against the waterproof chart on the bottle in good white light to read the pH.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cdiv\u003eAdjust with pH Up or pH Down if needed, then rinse the tube ready for the next test.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003ca href=\"\/products\/flairform-ph-down\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Down\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eReading came back high? The organic citric acid adjuster brings it down safely.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-up\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Up\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eReading came back low? Potassium carbonate strength without the caustic handling.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eRunning an electronic meter too? Cross-check the drops against a freshly calibrated pen.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow accurate is a liquid pH test kit compared to a meter?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eVery reliable — a drop kit gives accurate colour-matched results every time with nothing to drift. Even properly maintained electronic meters can read wrong, because lower-quality electrodes respond to foreign species like sodium. That's why many growers cross-check their meter against a test kit.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it need calibration or special storage?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. There's no calibration, no buffers and no probe care — just keep the bottle capped and stored cool and dark. That's the whole appeal over an electronic meter.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow many tests do I get from one bottle?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eUp to 800 tests from the 30ml bottle at 1–2 drops per test. Checking a reservoir daily, one bottle covers well over a year of grows.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use it for soil and coco as well as hydro?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It tests the pH of any nutrient solution or feed water across hydro, coco and soil. For testing soil itself, Flairform makes a dedicated Soil pH Test Kit with a conditioner for soil samples.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs it safe to handle and ship?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It's classified as non-hazardous and a non-dangerous good. The indicator is alcohol-based, so the 30ml dropper bottle uses a flow-restricting nipple, and it should be stored away from ignition sources. Keep it out of reach of children.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003e800 pH Checks. Zero Calibration.\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eThe simplest pH test in the grow room — $14.95. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop pH Control\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('52071736410410', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"Default Title","offer_id":52071736410410,"sku":"FF-PHC-TEST-30","price":14.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/pH-Test-Kit-by-Flairform-Liquid-pH-Tester-for-Hydroponics-800-Tests.png?v=1787635618"},{"product_id":"az-ec-stick-nutrient-meter","title":"EC Stick Nutrient Meter by AZ","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eMixing nutrients by the bottle alone is guesswork. The AZ EC Stick Nutrient Meter tells you how strong your feed actually is: dip the end into your reservoir or bucket and a column of blue LEDs lights up against scales for EC, CF and ppm, on both the 500 and 700 scales. There are no buttons and nothing to calibrate, it corrects for water temperature from 0 to 50°C, and it's IP67 waterproof and floats if it slips into the tank. It reads nutrient strength only, not pH, and the LED scale moves in steps rather than showing a decimal readout, so it's built for fast, dependable checks rather than lab work.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNothing to calibrate\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eFactory calibrated, with no buttons, no calibration solutions and no menus. Dip it and read it.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eThree scales on one stick\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eEC, CF and ppm (500 and 700) printed on the body, so it matches whatever your feed chart uses.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eWaterproof, and it floats\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eIP67, and it floats, so a slip into the reservoir doesn't end it.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eTemperature corrected\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAutomatic temperature compensation from 0 to 50°C, so cold and warm tanks read true.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eYears on one set of batteries\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThree AA batteries, rated by AZ at about three years at 10 readings a day.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eSensor built to last\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eA graphite probe AZ rates at more than five years with good care, under a crown cap that comes off for cleaning.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eSpecifications\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e AZ Instrument\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 8314\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEC range:\u003c\/strong\u003e 0.2 to 6.0 mS\/cm\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCF range:\u003c\/strong\u003e 2 to 60\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eppm range:\u003c\/strong\u003e 140 to 4,200 (700 scale), 100 to 3,000 (500 scale)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEC resolution:\u003c\/strong\u003e 0.1 mS\/cm to 4.0, then 0.25 mS\/cm to 6.0\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±4% of reading, ±1 step\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTemperature compensation:\u003c\/strong\u003e Automatic, 0 to 50°C\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Factory calibrated, no user calibration\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 24 blue LEDs, scales printed on the body\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e None. Auto on and off, low-battery indicator\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e Graphite, removable crown cap for cleaning\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof:\u003c\/strong\u003e IP67, floats\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 3 × AA alkaline, about 3 years at 10 readings a day\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 453mm long, 29.9mm diameter\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e About 230g\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e Meter, wrist strap, batteries, manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eGrower's Tip\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 0;\"\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eStir the reservoir before you read it, and hold the probe end fully under the surface.\u003c\/li\u003e\n\u003cli\u003eRinse the probe in clean water after each reading so residue doesn't build up on it.\u003c\/li\u003e\n\u003cli\u003eTake the crown cap off now and then to clean the probe.\u003c\/li\u003e\n\u003cli\u003eRead your source water on its own first, so you know how much of the number is water and how much is nutrient.\u003c\/li\u003e\n\u003cli\u003eCheck which ppm scale your feed chart uses before you mix. The 500 and 700 scales give different numbers for the same solution.\u003c\/li\u003e\n\u003cli\u003eIt doesn't read pH. Run a pH pen alongside it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eHow To Use It\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003eMix your nutrient solution and stir it well.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003eHold the stick by the strap end and dip the probe end into the solution.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003eLet the LEDs settle, then read EC, CF or ppm off the scale beside the lit LEDs.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eAdjust your mix and read again until you're on target.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003eRinse the probe in clean water and store the meter dry.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003ePairs Well With\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem;\"\u003e\n\u003ca href=\"\/products\/az-waterproof-ph-meter-pen-with-atc\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Meter Pen with ATC by AZ\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe other half of every feed check. The stick reads strength, the pen reads pH.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/az-waterproof-ec-tds-meter-pen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eEC \u0026amp; TDS Meter Pen by AZ\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eA calibratable LCD pen with a much wider range, for growers who want decimal readings.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/ph-control-calibration-ph-ec\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003epH Control \u0026amp; Calibration\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003epH up and down, and calibration solutions for your pens.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMeters \u0026amp; Pens\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEvery pH, EC and TDS meter we stock.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the AZ EC Stick need calibrating?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. It's factory calibrated and there's no user calibration. You dip it and read it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it measure pH?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. It reads nutrient strength as EC, CF and ppm. Pair it with a pH pen.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat does it read?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eEC 0.2 to 6.0 mS\/cm, CF 2 to 60, and ppm from 140 to 4,200 on the 700 scale or 100 to 3,000 on the 500 scale.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs it waterproof?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. It's rated IP67 and it floats.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat batteries does it take?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThree AA batteries, and they're included. AZ rates them at about three years at 10 readings a day.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow accurate is it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eAZ rates it at ±4% of the reading, plus or minus one LED step.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow is it different from the AZ EC \u0026amp; TDS Pen?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThe pen (model 8362) is an LCD meter with buttons and user calibration that reads a much wider range. The stick has no buttons and no calibration, and it's built only for nutrient-strength checks.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eKnow Your Feed Strength in Seconds\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eFree shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('53451911856426', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"AZ","offers":[{"title":"Default Title","offer_id":53451911856426,"sku":"AZ-METER-EC-STICK-8314","price":169.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/p-251103-00652.jpg?v=1793786085"},{"product_id":"aqua-master-p50-pro-replacement-electrode","title":"P50 Pro Replacement Electrode by Aqua Master Tools — pH \u0026 Temperature Probe for the P50 Pro and P50 Pro2 Pens","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eA pH pen does not die all at once. The glass bulb slowly loses its response, readings start to drift, calibration takes longer to settle, and one day it will not hold a calibration at all. On most pens that means buying a new meter. On the Aqua Master Tools P50 Pro and P50 Pro2 it means unscrewing the sealing ring and fitting this genuine replacement electrode (part AMT1001). It is the same pH and temperature sensor the pen shipped with, it is IP67 waterproof once fitted, and the swap takes a couple of minutes without tools. It fits both generations of the P50 and nothing else in the Aqua Master range.\u003c\/p\u003e\n\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cstrong style=\"color: #2e5e2e;\"\u003eSoak it before you use it.\u003c\/strong\u003e Aqua Master ships this electrode dry, and dried salt around the glass is normal. Stand the new electrode in tap water for at least 12 hours before fitting it, then calibrate. Skip the soak and the first readings will wander.\u003c\/div\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFits the P50 Pro and P50 Pro2\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAqua Master makes one P50 electrode (AMT1001) and it fits both generations of the pen. If you own a P50, this is the part.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eLess than half the price of a new pen\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eA worn bulb is the only part of a P50 that wears out. Replace the electrode and the meter body, display and batteries carry on as they were.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNo tools, no soldering\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnscrew the sealing ring at the base of the pen, pull the old electrode, seat the new one with the recess lined up, tighten the ring. Done.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eIP67 once it is fitted\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe rubber seal and sealing ring restore the pen's full waterproof rating, so it still floats and still survives a dunk in the reservoir.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003epH and temperature in one sensor\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe temperature sensor lives in the electrode too, so automatic temperature compensation comes back with the new part.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eGenuine part, six-month warranty\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAqua Master Tools warrants the electrode for six months. Third-party parts void the pen's warranty, so this is the only one worth fitting.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eSpecifications\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Aqua Master Tools\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e AMT1001\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e P50 Pro and P50 Pro2 pH \u0026amp; Temp pens\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH and temperature\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSensor:\u003c\/strong\u003e Glass pH bulb with integrated temperature sensor\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof rating:\u003c\/strong\u003e IP67 when fitted to the pen\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFitting:\u003c\/strong\u003e Tool-free, via the pen's sealing ring\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBefore first use:\u003c\/strong\u003e Soak in tap water for 12 hours, then calibrate\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration after fitting:\u003c\/strong\u003e 2-point auto, pH 7.00 then pH 4.01\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Upright with KCl storage solution in the cap (Aqua Master's recommendation)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 6 months on the electrode\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 8785258333705\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eGrower's Tip\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 0;\"\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eBefore you buy, try a clean and recalibrate. A bulb coated in nutrient film reads slow and drifty exactly like a worn one. Ten minutes in electrode cleaner, a rinse, then fresh pH 7 and pH 4 buffers. If it calibrates and holds, you did not need a new electrode.\u003c\/li\u003e\n\u003cli\u003eSigns it really is worn: calibration fails or will not settle, readings drift while the pen sits in a stable buffer, the response time has blown out to a minute or more, or the glass is visibly cracked or chipped.\u003c\/li\u003e\n\u003cli\u003eUse fresh buffer solution for the first calibration on a new electrode. Old buffers that have been dipped a dozen times are contaminated and will calibrate the new sensor to a wrong number.\u003c\/li\u003e\n\u003cli\u003eNever store a pH electrode in distilled or RO water. It pulls the ions out of the glass and shortens its life. Tap water is fine for the pre-use soak; KCl storage solution in the cap is best for day to day.\u003c\/li\u003e\n\u003cli\u003eRinse the electrode with water after every reading and put the cap back on. Dried nutrient salts on the glass are the main reason pH electrodes wear out early.\u003c\/li\u003e\n\u003cli\u003eDo not plunge a cold electrode into hot liquid or the other way round. Sudden temperature swings can crack the glass bulb, and that is not covered by warranty.\u003c\/li\u003e\n\u003cli\u003eKeep the old electrode's rubber seal if the new one looks different. Aqua Master's instructions have you check the seal is seated before tightening, and a mis-seated seal is how water gets into the pen.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eHow To Fit It\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003eSoak the new electrode in tap water for at least 12 hours. This dissolves the dried salts and activates the glass. Do this before you touch the pen.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003eTurn the pen off, take the cap off and unscrew the sealing ring at the lower end of the meter.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003ePull the old electrode straight out. Gently. It is a push fit onto connector pins, not a thread.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eLine up the recess on the new electrode with the pen body and push it home so the connectors mate properly. Forcing it in the wrong way round damages the pins.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003eCheck the rubber seal is sitting flat, then screw the sealing ring back on tight. This is what gives you the IP67 rating back.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\u003cspan\u003eRun the pen's 2-point calibration in fresh pH 7.00 then pH 4.01 buffer, as described in the manual. The pen is ready once it confirms the calibration.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin: 1rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eWant to see it done first? \u003ca href=\"https:\/\/www.youtube.com\/watch?v=MR_Nq81lPM8\" target=\"_blank\" rel=\"noopener\" style=\"color: #2e5e2e; font-weight: 600;\"\u003eWatch Aqua Master Tools' electrode replacement video on YouTube\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003ePairs Well With\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem;\"\u003e\n\u003ca href=\"\/products\/aqua-master-tools-p50-pro2-ph-temperature-meter\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eAqua Master P50 Pro2 pH \u0026amp; Temperature Meter\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe pen this electrode fits. If the body or display has given up rather than the bulb, this is the fix instead.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFirst point of the P50's 2-point calibration. Fresh buffer for a fresh electrode.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-4\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 4.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eSecond calibration point. You need both to calibrate the P50 properly.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-electrode-storage\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Electrode Storage Solution\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eA few drops in the cap keeps the glass hydrated between readings. Aqua Master recommends storing the P50 this way.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-electrode-cleaner\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Electrode Cleaner\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eClean the bulb before you condemn it. Regular cleaning is what makes the next electrode last longer than the last one.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMeters \u0026amp; Pens – pH \u0026amp; EC Testing\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEvery pH, EC and combo pen we stock, plus the probes and solutions that keep them honest.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this electrode fit the P50 Pro2 as well as the original P50 Pro?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Aqua Master Tools makes a single P50 electrode, part AMT1001, and lists it as the replacement for both the P50 Pro and the P50 Pro2. The Pro2 changed the display, batteries and firmware, not the electrode.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWill it fit the P110, P160 or E50 pens?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. Each Aqua Master pen family has its own electrode and they are not interchangeable. The P160 Pro and Pro2 use the P160 electrode (AMT1019), the P110 uses AMT1014 and the E50 uses the E50 EC electrode. Check the model name printed on your pen before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow do I know the electrode is worn and not just dirty?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eClean it first. Soak the bulb in electrode cleaner, rinse, then calibrate in fresh pH 7 and pH 4 buffers. If the pen still will not calibrate, drifts while sitting in a stable buffer, or takes more than a minute to settle, the glass has had its day and this electrode is the fix.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need any tools to replace it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The sealing ring at the base of the pen unscrews by hand, the old electrode pulls straight out and the new one pushes in. Aqua Master's own instructions are seven steps and most of them are \"check the seal\" and \"calibrate\".\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the pen need recalibrating after I fit the new electrode?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, every time. The calibration stored in the pen belongs to the old electrode. Soak the new one for 12 hours, fit it, then run the 2-point calibration in pH 7.00 and pH 4.01 before you trust a single reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy does the new electrode have white crust on it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThat is dried salt from the electrode's internal solution and Aqua Master says it is normal. The 12-hour soak in tap water dissolves it and rehydrates the glass. It is not a fault and it is not a sign the part is old.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pen still waterproof with a replacement electrode?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, provided the rubber seal is seated and the sealing ring is done up tight. Aqua Master rates the electrode IP67 when attached to the meter, the same as the pen out of the box.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long should a P50 electrode last?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eIt depends on how it is treated, and Aqua Master does not publish a figure. Rinsed after every use, capped with storage solution and kept out of concentrated nutrients and pH adjusters, a pH electrode lasts a long time. Left dry on a bench with nutrient crust on the glass, it will not. The warranty on the electrode itself is six months.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eFix the pen, keep the pen\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eGenuine Aqua Master Tools P50 electrode, shipped from Tasmania. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters \u0026amp; Pens\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('53474205040938', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":53474205040938,"sku":"AMT-METER-ELEC-P50PRO","price":64.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/aqua-master-p50-pro-replacement-electrode-amt1001.jpg?v=1793914181"},{"product_id":"aqua-master-p160-pro-replacement-electrode","title":"P160 Pro Replacement Electrode by Aqua Master Tools — 5-in-1 pH, EC, TDS, PPM \u0026 Temperature Probe for the P160 Pro and P160 Pro2 Combo Pens","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eThe P160 is the pen that does everything, which also means every reading it gives you comes off one electrode. pH, EC, TDS, PPM and temperature all live in this part, so when the glass bulb tires or the conductivity rings scale up, the whole pen goes vague at once. This is the genuine Aqua Master Tools replacement electrode (part AMT1019) for the P160 Pro and P160 Pro2 combo pens. It is the same 5-in-1 sensor the pen shipped with, it is IP67 waterproof once fitted, it swaps over by hand in a couple of minutes, and it costs well under half of a new pen. It is a dry-storage electrode like the original, so no KCl cap is needed day to day.\u003c\/p\u003e\n\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 2rem; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cstrong style=\"color: #2e5e2e;\"\u003eSoak it before you use it.\u003c\/strong\u003e Aqua Master ships this electrode dry, and dried salt around the glass is normal. Stand the new electrode in tap water for at least 12 hours before fitting it, then calibrate both pH and EC. Skip the soak and the first readings will wander.\u003c\/div\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFits the P160 Pro and P160 Pro2\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAqua Master makes one P160 electrode (AMT1019) and it fits both generations of the combo pen. It does not fit the P110, which uses its own part.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eAll five readings from one part\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003epH glass, EC rings and the temperature sensor sit in one cartridge. One swap brings back every number the P160 reads, not just pH.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eWell under half the price of a new pen\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe electrode is the only wearing part. The body, display, case and calibration solutions you already own carry on as they were.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eNo tools, no soldering\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eUnscrew the sealing ring at the base of the pen, pull the old electrode, seat the new one with the recess lined up, tighten the ring. Done.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eDry storage, IP67 once fitted\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eNo storage solution needed between uses, and with the seal seated and the ring tight the pen gets its full waterproof rating back.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eGenuine part, six-month warranty\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eAqua Master Tools warrants the electrode for six months. Fitting a part from another brand voids the pen's warranty, so this is the only one worth using.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eSpecifications\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Aqua Master Tools\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e AMT1019\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e P160 Pro and P160 Pro2 combo pens\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH, EC, TDS, PPM and temperature\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSensor:\u003c\/strong\u003e Glass pH bulb, conductivity electrodes and temperature sensor in one cartridge\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eStorage type:\u003c\/strong\u003e Dry storage, no liquid needed between uses\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWaterproof rating:\u003c\/strong\u003e IP67 when fitted to the pen\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFitting:\u003c\/strong\u003e Tool-free, via the pen's sealing ring\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBefore first use:\u003c\/strong\u003e Soak in tap water for 12 hours, then calibrate\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCalibration after fitting:\u003c\/strong\u003e pH 2-point auto (7.00 then 4.01); EC manual with any EC standard (1413 supplied with the pen)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 6 months on the electrode\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 8785258333743\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eGrower's Tip\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 0;\"\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eBefore you buy, clean and recalibrate. A bulb coated in nutrient film or EC rings furred with scale behave exactly like a worn electrode. Ten minutes in electrode cleaner, a rinse, then fresh pH 7, pH 4 and EC standard. If both modes calibrate and hold, you did not need a new electrode.\u003c\/li\u003e\n\u003cli\u003eSigns it really is worn: pH will not calibrate or drifts in a stable buffer, EC will not return to zero in clean water, the response time has blown out to a minute or more, or the glass is cracked or chipped.\u003c\/li\u003e\n\u003cli\u003eAqua Master's own fix for an EC reading that will not drop back to zero is a short swirl in ethyl alcohol (5 to 10 seconds). Try that before you condemn the electrode.\u003c\/li\u003e\n\u003cli\u003eCalibrate both modes after fitting, even if you mostly use one. The EC side can be calibrated with any EC standard because the P160's EC calibration is not temperature dependent, so the 2.76 EC Flairform standard works as well as the 1413 solution in the pen's case.\u003c\/li\u003e\n\u003cli\u003eUse fresh buffer and standard for the first calibration on a new electrode. Solutions that have been dipped a dozen times are contaminated and will calibrate the new sensor to a wrong number.\u003c\/li\u003e\n\u003cli\u003eRinse the electrode with water after every reading and put the cap back on. Dried nutrient salts on the glass and the EC rings are the main reason combo electrodes wear out early.\u003c\/li\u003e\n\u003cli\u003eDo not plunge a cold electrode into hot liquid or the other way round. Sudden temperature swings can crack the glass bulb, and that is not covered by warranty.\u003c\/li\u003e\n\u003cli\u003eCheck the rubber seal is seated before you tighten the sealing ring. A mis-seated seal is how water gets into the pen, and water damage is not a warranty claim either.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eHow To Fit It\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003eSoak the new electrode in tap water for at least 12 hours. This dissolves the dried salts and activates the glass. Do this before you touch the pen.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003eTurn the pen off, take the cap off and unscrew the sealing ring at the lower end of the meter.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003ePull the old electrode straight out. Gently. It is a push fit onto connector pins, not a thread.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003eLine up the recess on the new electrode with the pen body and push it home so the connectors mate properly. Forcing it in the wrong way round damages the pins.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003eCheck the rubber seal is sitting flat, then screw the sealing ring back on tight. This is what gives you the IP67 rating back.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\u003cspan\u003eCalibrate pH first (2-point auto, pH 7.00 then pH 4.01), then switch to EC mode and calibrate against your EC standard, as described in the manual. The pen is ready once both calibrations are confirmed.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin: 1rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eWant to see it done first? \u003ca href=\"https:\/\/www.youtube.com\/watch?v=MR_Nq81lPM8\" target=\"_blank\" rel=\"noopener\" style=\"color: #2e5e2e; font-weight: 600;\"\u003eWatch Aqua Master Tools' electrode replacement video on YouTube\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003ePairs Well With\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem;\"\u003e\n\u003ca href=\"\/products\/aqua-master-tools-p160-pro2-combo-pen\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eAqua Master P160 Pro2 Combo Pen\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe pen this electrode fits. If the body or display has given up rather than the sensor, this is the fix instead.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-7\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 7.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFirst point of the P160's 2-point pH calibration. Fresh buffer for a fresh electrode.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-ph-buffer-4\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform pH Buffer 4.0\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eSecond pH calibration point. You need both to calibrate the pH side properly.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-conductivity-standard\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Conductivity Standard 2.76 EC\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eFor the EC side. The P160 calibrates EC against any standard, so this works in place of the 1413 solution once that runs out.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/flairform-electrode-cleaner\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eFlairform Electrode Cleaner\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eClean the bulb and EC rings before you condemn them. Regular cleaning is what makes the next electrode outlast the last one.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eMeters \u0026amp; Pens – pH \u0026amp; EC Testing\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eEvery pH, EC and combo pen we stock, plus the probes and solutions that keep them honest.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes this electrode fit the P160 Pro2 as well as the original P160 Pro?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. Aqua Master Tools makes a single P160 electrode, part AMT1019, and lists it as the replacement for both the P160 Pro and the P160 Pro2. The Pro2 changed the display, batteries and firmware, not the electrode.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWill it fit the P110 combo pen? They look the same.\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The P110 uses its own electrode (AMT1014) and Aqua Master states the two are not interchangeable. The P160 also calculates TDS and PPM, which the P110 does not, so the electronics expect the right part. Check the model name printed on the front of your pen.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes one electrode really replace pH, EC, TDS, PPM and temperature?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes. The pH glass, the conductivity electrodes and the temperature sensor are built into this one cartridge. TDS and PPM are calculated from the EC reading, so once pH and EC are calibrated, all five numbers are back.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow do I know the electrode is worn and not just dirty?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eClean it first. Soak the tip in electrode cleaner, rinse, then calibrate pH in fresh pH 7 and pH 4 buffers and EC in fresh standard. If pH still will not calibrate or drifts in a stable buffer, or EC will not come back to zero in clean water even after a swirl in ethyl alcohol, the electrode has had its day.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need any tools to replace it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The sealing ring at the base of the pen unscrews by hand, the old electrode pulls straight out and the new one pushes in. Aqua Master's own instructions are seven steps and most of them are \"check the seal\" and \"calibrate\".\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I have to recalibrate both pH and EC after fitting it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, both. The calibration stored in the pen belongs to the old electrode. Soak the new one for 12 hours, fit it, run the 2-point pH calibration, then switch to EC mode and calibrate against your EC standard before you trust a reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes it need storage solution in the cap like a normal pH probe?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eNo. The P160 electrode is a dry-storage type, the same as the one the pen shipped with. Rinse it after use, cap it and put it away. The one exception is the 12-hour tap water soak before first use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhy does the new electrode have white crust on it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eThat is dried salt from the electrode's internal solution and Aqua Master says it is normal. The 12-hour soak in tap water dissolves it and rehydrates the glass. It is not a fault and it is not a sign the part is old.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the pen still waterproof with a replacement electrode?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eYes, provided the rubber seal is seated and the sealing ring is done up tight. Aqua Master rates the electrode IP67 when attached to the meter, the same as the pen out of the box.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 2rem;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eFive readings back for the price of one part\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eGenuine Aqua Master Tools P160 electrode, shipped from Tasmania. Free shipping over $499*.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/meters-pens-ph-ec-testing\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eShop All Meters \u0026amp; Pens\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt('53474209759530', 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e\n","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":53474209759530,"sku":"AMT-METER-ELEC-P160PRO","price":99.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/aqua-master-p160-pro-replacement-electrode-amt1019.jpg?v=1793914181"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/collections\/4bcf2894-06e4-4009-ab7a-d703e73cf810_0e398921-0a39-45bd-97c2-869d2c986e85.jpg?v=1785302662","url":"https:\/\/www.thegrowguys.com.au\/collections\/meters-pens-ph-ec-testing.oembed?page=2","provider":"The Grow Guys","version":"1.0","type":"link"}