{"product_id":"bluelab-calibration-solution-ph4-ph7-ec277-australia","title":"Bluelab Calibration Solution pH 4.0 7.0 \u0026 2.77 EC | Hydroponic Calibration Sachets Australia","description":"\u003ch2\u003eBluelab Calibration Solutions – pH 4.0, pH 7.0 \u0026amp; 2.77 EC Sachets for Hydroponic Meter Accuracy\u003c\/h2\u003e\u003cp\u003eBluelab Calibration Solutions are precision-formulated reference solutions designed to maintain the accuracy and reliability of pH and conductivity (EC) meters used in hydroponic systems. Regular calibration ensures measurement stability, preventing sensor drift and maintaining optimal nutrient management across all growth stages.\u003c\/p\u003e\u003cp\u003eEach solution is supplied in convenient single-use sachets, eliminating contamination risks and ensuring consistent calibration results every time. The sealed format allows for portable, on-demand calibration, making it suitable for both grow room and field use.\u003c\/p\u003e\u003cp\u003eThese solutions are essential for users operating pH pens, EC meters, and multi-parameter hydroponic testers, ensuring instruments deliver accurate readings for nutrient solution management. Available in three variants covering the full calibration range for both pH and conductivity measurement.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintains accuracy of pH and EC meters.\u003c\/strong\u003e Regular calibration with precision reference solutions prevents sensor drift and ensures reliable measurement data for nutrient management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-use sachets eliminate contamination.\u003c\/strong\u003e Pre-measured, sealed sachets prevent cross-contamination between calibration sessions, ensuring consistent reference solution concentration every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable on-demand calibration.\u003c\/strong\u003e Compact sachet format is easy to store and transport, enabling calibration in the grow room, greenhouse, or field without bulk containers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree variants for complete calibration coverage.\u003c\/strong\u003e pH 4.0, pH 7.0, and EC 2.77 solutions cover the full two-point pH calibration range and EC meter verification in a single pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with all Bluelab meters and probes.\u003c\/strong\u003e Formulated to work with Bluelab pH pens, EC meters, the 3-in-1 Bluetooth meter, Guardian Monitor, and all BNC-compatible instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong shelf life when sealed.\u003c\/strong\u003e Individually sealed sachets maintain solution integrity until opened, extending usable product life for infrequent calibration schedules.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen the single-use sachet.\u003c\/strong\u003e Tear open the pre-measured sachet immediately before calibration to ensure solution integrity and accurate reference concentration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubmerge the probe into calibration solution.\u003c\/strong\u003e Insert the pH or EC probe into the solution and allow the reading to stabilise before initiating the calibration sequence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow the meter calibration process.\u003c\/strong\u003e Complete the calibration steps as directed by the meter manufacturer, using the appropriate pH 4.0, pH 7.0, or EC 2.77 solution for each calibration point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispose of the sachet after use.\u003c\/strong\u003e Single-use format prevents contamination of remaining solution. Do not reuse opened sachets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeat regularly to maintain accuracy.\u003c\/strong\u003e Calibrate pH probes at minimum every 30 days, or as prompted by the meter's calibration reminder function.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Variants\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH 4.0 Calibration Solution.\u003c\/strong\u003e Acidic reference point for two-point pH calibration. Used as the lower calibration point for pH meters and probes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH 7.0 Calibration Solution.\u003c\/strong\u003e Neutral reference point for two-point pH calibration. Used as the upper calibration point for pH meters and probes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.77 EC Conductivity Solution.\u003c\/strong\u003e Reference solution for EC meter calibration and verification. Ensures accurate conductivity readings across the measurement range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSystem Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-measured calibration solutions.\u003c\/strong\u003e Each sachet contains a precise volume of reference solution at a certified concentration for consistent calibration results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy tear-open sachets.\u003c\/strong\u003e Simple single-handed opening for fast, convenient calibration without tools or measuring equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates cross-contamination.\u003c\/strong\u003e Single-use format ensures each calibration session uses uncontaminated reference solution for maximum accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent concentration for accuracy.\u003c\/strong\u003e Precision-formulated solutions maintain certified reference values for reliable calibration across all compatible instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact packaging for storage and transport.\u003c\/strong\u003e Lightweight sachet format stores easily in grow rooms, tool kits, and field equipment bags.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for routine and professional calibration.\u003c\/strong\u003e Appropriate for hobby growers on regular maintenance schedules and commercial operations requiring frequent instrument verification.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBluelab pH 4.0 and pH 7.0 calibration solution for two-point pH meter calibration Australia\u003c\/li\u003e\n\u003cli\u003eEC 2.77 conductivity calibration solution for hydroponic EC meter verification\u003c\/li\u003e\n\u003cli\u003epH pen calibration fluid for Bluelab and BNC-compatible meters\u003c\/li\u003e\n\u003cli\u003eHydroponic testing equipment maintenance and accuracy verification\u003c\/li\u003e\n\u003cli\u003eNutrient solution management calibration kit for grow rooms and commercial facilities\u003c\/li\u003e\n\u003cli\u003eSingle-use calibration sachets for portable and field-based hydroponic testing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRecommended With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluelab pH \u0026amp; EC meters.\u003c\/strong\u003e Use with the Bluelab 3-in-1 Bluetooth Meter, Soil pH Pen, pH Temperature Pen, and EC Meter Pen for regular calibration and accuracy maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluelab Guardian Monitor WiFi.\u003c\/strong\u003e Regular probe calibration maintains the accuracy of continuous monitoring systems for reliable long-term data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKCl storage solution.\u003c\/strong\u003e Pair with KCl storage solution to maintain double-junction pH probe hydration between calibration and testing sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat Sets It Apart\u003c\/h3\u003e\u003cp\u003eBluelab Calibration Solutions are engineered for precision and convenience, using single-use sachets to ensure contamination-free calibration at every session. The three-variant format covers the complete pH and EC calibration range in a single product, supporting consistent meter accuracy and reliable nutrient management across all Bluelab and BNC-compatible hydroponic testing instruments.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolution Types.\u003c\/strong\u003e pH 4.0, pH 7.0, and EC 2.77\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat.\u003c\/strong\u003e Single-use sachets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume per Sachet.\u003c\/strong\u003e 18 ml (0.6 fl. oz.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Quantity.\u003c\/strong\u003e 30 sachets per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility.\u003c\/strong\u003e pH meters, EC meters, and multi-parameter hydroponic testers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf Life.\u003c\/strong\u003e Long shelf life when sealed. Use immediately after opening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight.\u003c\/strong\u003e Approximately 0.6 to 0.8 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaged Shipping Weight.\u003c\/strong\u003e Approximately 0.8 to 1.0 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow often should I calibrate Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC?\u003c\/h3\u003e\n\u003cp\u003epH meters should be calibrated before every use or at minimum every 2–3 days during active grows. EC meters are more stable but should be verified against a known reference solution weekly. Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC uses two-point calibration for pH (4.0 and 7.0 buffer solutions) and single-point calibration for EC (2.77 mS\/cm standard). Regular calibration is the single most important factor in measurement accuracy.\u003c\/p\u003e\n\u003ch3\u003eHow do I store Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC properly?\u003c\/h3\u003e\n\u003cp\u003eAlways store pH probes wet — never allow the probe tip to dry out as this permanently damages the glass membrane. Use the probe storage solution supplied with Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC or Bluelab KCl storage solution. EC probes are more robust but should also be rinsed with clean water after each use. Store Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC at room temperature away from direct sunlight.\u003c\/p\u003e\n\u003ch3\u003eWhat should I do if Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC is reading incorrectly?\u003c\/h3\u003e\n\u003cp\u003eFirst, recalibrate using fresh buffer solutions — old or contaminated calibration fluid is the most common cause of inaccurate readings. Rinse the probe thoroughly with deionised or distilled water between calibrations. If readings are still inconsistent after recalibration, check the probe for physical damage or contamination. Most probes have a service life of 12–18 months with proper care.\u003c\/p\u003e\n\u003ch3\u003eIs Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC waterproof?\u003c\/h3\u003e\n\u003cp\u003eCheck the IP rating listed in the product specifications. Most handheld meters are splash-proof but not designed for submersion. Take care when measuring in deep reservoirs to avoid dropping the unit. Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC is designed for hydroponic nutrient solution testing — it is not rated for outdoor or continuous immersion use.\u003c\/p\u003e\n\u003ch3\u003eDoes Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — Bluelab Calibration Solution pH 4.0 7.0 \u0026amp; 2.77 EC ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"Bluelab PH-4 Sachets (Box of 30)","offer_id":43188871102527,"sku":null,"price":64.95,"currency_code":"AUD","in_stock":true},{"title":"Bluelab PH-7 Sachets (Box of 30)","offer_id":43188871135295,"sku":null,"price":64.95,"currency_code":"AUD","in_stock":true},{"title":"Bluelab 2.77 Calibration Solution (Box 30)","offer_id":43188871168063,"sku":null,"price":64.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/PH-7-600x600.jpg?v=1777439046","url":"https:\/\/apexgrow.com.au\/products\/bluelab-calibration-solution-ph4-ph7-ec277-australia","provider":"Apex Grow","version":"1.0","type":"link"}