{"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=\"\/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 — the gear this standard keeps reading true.\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;\"\u003epH buffers, adjusters and storage solutions — the full accuracy toolkit.\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\/7872-Conductivity-Standard-250ml.png?v=1783917695","url":"https:\/\/www.thegrowguys.com.au\/products\/flairform-conductivity-standard","provider":"The Grow Guys","version":"1.0","type":"link"}