{"product_id":"growth-technology-ph-buffer-solution","title":"Growth Technology pH Buffer Solution (pH 4 \u0026 pH 7)","description":"\u003cp\u003e\u003cstrong\u003epH 4 and pH 7 buffer solutions\u003c\/strong\u003e for calibrating your pH pen or meter. Regular calibration keeps your readings accurate, so you're not adjusting your feed based on a wrong number.\u003c\/p\u003e\u003ch2\u003eSizes available\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBuffer 4: 300ml or 1L\u003c\/li\u003e\n\u003cli\u003eBuffer 7: 300ml or 1L\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow to calibrate\u003c\/h2\u003e\u003cp\u003eRinse the probe, calibrate in pH 7 first, rinse again, then calibrate in pH 4, following your meter's instructions. Use fresh solution each time and never pour used buffer back into the bottle.\u003c\/p\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhy do I need both?\u003c\/strong\u003e\u003cbr\u003eMost pH meters calibrate at two points, pH 7 and pH 4, for accurate readings across the range.\u003c\/p\u003e\u003cp\u003eKeep your probe in \u003ca href=\"\/products\/growth-technology-ph-probe-storage-solution\"\u003eprobe storage solution\u003c\/a\u003e between uses. See all \u003ca href=\"\/collections\/growth-technology\"\u003eGrowth Technology\u003c\/a\u003e products and \u003ca href=\"\/collections\/meters-and-testers\"\u003emeters and testers\u003c\/a\u003e. Need advice? Call us on 0121 553 7872, WhatsApp our experts or pop in.\u003c\/p\u003e","brand":"Growth Technology","offers":[{"title":"Buffer 4 - 300ml","offer_id":55576692162887,"sku":"bcs-gt-ph-buffer-solution-buffer-4-300ml","price":2.39,"currency_code":"GBP","in_stock":true},{"title":"Buffer 4 - 1L","offer_id":55576692195655,"sku":"bcs-gt-ph-buffer-solution-buffer-4-1l","price":6.39,"currency_code":"GBP","in_stock":true},{"title":"Buffer 7 - 300ml","offer_id":55576692097351,"sku":"bcs-gt-ph-buffer-solution-buffer-7-300ml","price":2.39,"currency_code":"GBP","in_stock":true},{"title":"Buffer 7 - 1L","offer_id":55576692130119,"sku":"bcs-gt-ph-buffer-solution-buffer-7-1l","price":6.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0082\/0295\/files\/f9b7820e.jpg?v=1793028135","url":"https:\/\/blackcountrysystems.com\/products\/growth-technology-ph-buffer-solution","provider":"Black Country Systems","version":"1.0","type":"link"}