{"product_id":"ph-buffer-7-250ml","title":"PH Buffer 7 250ml","description":"\u003ch3 class=\"text-red\"\u003eProfessional pH buffers for hydroponics\u003c\/h3\u003e\n\u003cdiv class=\"product-post-editor-styles\"\u003e\n\u003cp class=\"j-txt text-justify text-bold\"\u003e\u003cstrong\u003epH meters must be regularly ‘calibrated’ (i.e. adjusted for accuracy) using standard pH buffer solutions which are made to an internationally agreed recipe:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlairform’s buffers are formulated with NIST* specified ingredients.\u003c\/li\u003e\n\u003cli\u003eStabilised to resist algae or growth formation and provide exceptional shelf-life.\u003c\/li\u003e\n\u003cli\u003eAvailable in 250ml and 1L.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is essential to calibrate using at least TWO pH buffers. These need to differ in pH by at least three pH units over the pH range being used. For nutrient solutions, pH buffer 4.0 and 7.0 are the ideal calibration standards. Some manufacturers claim that their pH meters require calibration using only pH buffer 7.0. Professional practice however, stipulates using two buffers because this will confirm or otherwise that the correct calibration “slope” is being obtained i.e. that both the electrode and meter are ranging correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003csmall\u003eSupplier source: \u003ca href=\"https:\/\/erithhorticulture.com\/product\/ph-buffer-7-250ml\/\"\u003ehttps:\/\/erithhorticulture.com\/product\/ph-buffer-7-250ml\/\u003c\/a\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"Erith Horticulture","offers":[{"title":"Default Title","offer_id":53667337601290,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/9157\/3002\/files\/ph-buffer-7.png?v=1788998257","url":"https:\/\/maxgrow.uk\/products\/ph-buffer-7-250ml","provider":"MaxGrow","version":"1.0","type":"link"}