{"product_id":"essentials-lab-buffer-ph","title":"Essentials LAB Buffer pH","description":"\u003ch2\u003eKeep Every pH Reading Honest\u003c\/h2\u003e\n\u003cp\u003eEssentials LAB Buffer pH solutions are calibration fluids for checking and adjusting a pH meter's accuracy, sold as matched pH 4 and pH 7 references so a meter can be calibrated against two points rather than one. Essentials is VitaLink's own entry-level brand, matching the same trusted formulation behind VitaLink's own buffer solutions, and pairs directly with the Essentials pH Meter already in the HCS range.\u003c\/p\u003e\n\u003cp\u003eA meter drifts over time, especially with regular use in nutrient solution, and calibrating against a known buffer is the only way to know a reading is actually correct rather than just consistent. Running both a pH 4 and pH 7 buffer gives a proper two-point calibration across the range most growers actually work in.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched pH 4 and pH 7 buffer solutions\u003c\/strong\u003e for genuine two-point meter calibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame formulation lineage\u003c\/strong\u003e as VitaLink's own buffer solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs directly\u003c\/strong\u003e with the Essentials pH Meter and other digital pH pens\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps feed dosing accurate\u003c\/strong\u003e by keeping the meter reading it against honest\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e dip the probe in pH 7 buffer first, then pH 4, following your meter's calibration routine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e recalibrate regularly, especially with daily nutrient-solution use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: pH calibration buffer solution\u003c\/li\u003e\n\u003cli\u003eVariants: pH 4.0 and pH 7.0\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUse: digital pH meter\/pen calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Essentials","offers":[{"title":"250ml - pH 4","offer_id":53500727361802,"sku":"NUT-ESS-002-01","price":3.9,"currency_code":"GBP","in_stock":true},{"title":"250ml - pH 7","offer_id":53500727394570,"sku":"NUT-ESS-002-02","price":3.9,"currency_code":"GBP","in_stock":true},{"title":"1L -pH 4","offer_id":53527791206666,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":false},{"title":"1L - pH 7","offer_id":53527791239434,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/09-430-020_1.png?v=1786377717","url":"https:\/\/hydrocropshop.co.uk\/products\/essentials-lab-buffer-ph","provider":"Hydro Crop Shop","version":"1.0","type":"link"}