{"product_id":"ph4250bl-bluelab-ph-4-0-calibration-solution-250ml-carton-of-6","title":"PH4250BL Bluelab pH 4.0 Calibration Solution 250ml","description":"\u003cp\u003eBluelab pH 4.0 Calibration Solution 250ml\u003c\/p\u003e\n\u003cp\u003eHere’s the \u003cstrong\u003eproduct description\u003c\/strong\u003e for the calibration solution you asked about:\u003c\/p\u003e\n\u003cp\u003eWhat is \u003cstrong\u003e\u003ca href=\"https:\/\/chatgpt.com\/?hints=search\u0026amp;openaicom_referred=true\u0026amp;model=gpt-5-2\"\u003eBluelab pH 4.0 Calibration Solution 250?ml\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a \u003cstrong\u003epH calibration solution\u003c\/strong\u003e designed for \u003cstrong\u003eadjusting and verifying accuracy\u003c\/strong\u003e of pH meters, pens, monitors, or controllers — especially those used in growing, hydroponics, labs, aquariums, and other applications where precise pH measurement matters.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003e Key Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose:\u003c\/strong\u003e Used as a \u003cstrong\u003estandard pH 4.0 buffer solution\u003c\/strong\u003e to calibrate pH measurement equipment so it reads correctly at that reference point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy it matters:\u003c\/strong\u003e pH meters should be calibrated with known reference solutions regularly (often monthly or before critical measurements) to ensure \u003cstrong\u003eaccurate readings\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow calibration works:\u003c\/strong\u003e Typically, meters are first calibrated at \u003cstrong\u003epH 7.0\u003c\/strong\u003e (neutral) then at \u003cstrong\u003epH 4.0\u003c\/strong\u003e (acidic slope) to set the instrument’s accuracy curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep the bottle sealed and stored in a \u003cstrong\u003ecool, dark place\u003c\/strong\u003e to maintain solution stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical \/ Practical Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 250 ml (8.4 fl oz) per bottle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to high laboratory reference standards (often traceable to standards like NIST) so your meter calibration is reliable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse with:\u003c\/strong\u003e Suitable for all brands of pH meters, but particularly recommended for use with Bluelab meters and probes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003e Why You Need It\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRegular calibration ensures \u003cstrong\u003eaccurate and consistent pH measurements\u003c\/strong\u003e, which is crucial for nutrient solution management (especially in hydroponics\/growth systems).\u003c\/li\u003e\n\u003cli\u003eHelps \u003cstrong\u003emaximize the life and performance\u003c\/strong\u003e of pH probes and instruments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BLUELAB","offers":[{"title":"Default Title","offer_id":46104562106541,"sku":"PH4250BL","price":999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/7666\/9357\/files\/Bluelab-pH-4-Calibration-Solution-250ml_PH4250_1_2_webp.jpg?v=1781166654","url":"https:\/\/rinstrument.com\/products\/ph4250bl-bluelab-ph-4-0-calibration-solution-250ml-carton-of-6","provider":"Rinstruments","version":"1.0","type":"link"}