{"product_id":"hanna-groline-ph-7-01-calibration-buffer-500-ml","title":"Hanna GroLine pH 7.01 Calibration Buffer — 500 mL","description":"\u003cp\u003epH 7.01 is the neutral calibration point every pH meter starts from — the offset point used to anchor an accurate one- or two-point calibration. This 500 mL bottle of GroLine buffer is the economical size for growers who calibrate often.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278735823131,"sku":"HI7007L","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7007l_d477f779-697b-4b7d-90ec-0caf153b6bef.jpg?v=1792257154","url":"https:\/\/ghhydro.com\/products\/hanna-groline-ph-7-01-calibration-buffer-500-ml","provider":"Green Harvest Hydroponics","version":"1.0","type":"link"}