{"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\/BL_Image-Product_BSNPHP00_pH-Probe-Plus_Cap-off.png?v=1783728666","url":"https:\/\/www.thegrowguys.com.au\/products\/bluelab-ph-probeplus","provider":"The Grow Guys","version":"1.0","type":"link"}