{"product_id":"milwaukee-4-01ph-buffer-calibration-solution","title":"Milwaukee 4.01pH Buffer Calibration Solution","description":"\u003ch2 data-oe-version=\"1.2\"\u003epH 4.01 Calibration Buffer Solution for pH Probes\u003c\/h2\u003e\n\u003cp\u003eThe Milwaukee 4.01pH Buffer Calibration Solution 230ml is a ready-to-use pH 4.01 buffer for pH meters, probes, testers, monitors, and controllers. It is used during calibration when the meter requires a 4.01 pH reference point.\u003c\/p\u003e\n\u003cp\u003eThis 230mL bottle is useful for hobbyists, stores, and service techs who calibrate pH equipment often. The solution is rated at ±0.01 pH accuracy, helping support steady calibration when used with clean probes and proper meter instructions.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003epH 4.01 calibration buffer solution for pH meters and probes.\u003c\/li\u003e\n\u003cli\u003e230mL bottle format for repeat calibration use.\u003c\/li\u003e\n\u003cli\u003eStandard ±0.01 pH accuracy for repeatable calibration.\u003c\/li\u003e\n\u003cli\u003eReady-to-use liquid avoids powder mixing.\u003c\/li\u003e\n\u003cli\u003eUsed with pH testers, pens, monitors, controllers, and probes.\u003c\/li\u003e\n\u003cli\u003eHelps verify or adjust pH readings during routine calibration.\u003c\/li\u003e\n\u003cli\u003eSuitable for aquarium, service, and general pH meter maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAquarium hobbyists calibrating pH meters that require a 4.01 buffer point.\u003c\/li\u003e\n\u003cli\u003eService techs and stores that calibrate pH probes more than once or twice.\u003c\/li\u003e\n\u003cli\u003eController users maintaining pH probes for reef tanks, freshwater systems, or dosing setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePro Tips:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse clean solution each time.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePour only what you need into a clean cup. Do not dip a dirty probe into the main bottle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not return used buffer.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUsed solution can be contaminated by tank water or other buffers. Discard it after calibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse between buffers.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRinse the probe with clean water before moving between 4.01 and 7.01 solutions. This helps avoid cross-contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLet the reading settle.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGive the probe time to stabilize before confirming the calibration point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore the bottle closed.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eKeep the cap tight and store the bottle away from heat and direct light.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hydros","offers":[{"title":"4.01pH - 230ml - MSRP $13.50","offer_id":67694710030470,"sku":"CV-MA9004","price":10.93,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/4837\/0240\/files\/CV-MA9004.webp?v=1792069734","url":"https:\/\/carolinaaquatics.com\/products\/milwaukee-4-01ph-buffer-calibration-solution","provider":"Carolina Aquatics","version":"1.0","type":"link"}