{"product_id":"bluelab-ph-4-0-calibration-solution-500ml","title":"Bluelab pH 4.0 Calibration Solution - 500 ml","description":"\u003cp\u003eKeep your pH testing routine on track with Bluelab pH 4.0 Calibration Solution. This 500 ml bottle provides a pH 4.0 reference point for calibrating pH meters, pens and probes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e500 ml bottle\u003c\/li\u003e\n\u003cli\u003epH 4.0 buffer for regular calibration\u003c\/li\u003e\n\u003cli\u003eFor use with Bluelab pH meters, pens and probes\u003c\/li\u003e\n\u003cli\u003eUse alongside pH 7.0 solution for two-point calibration, following your meter's instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStore in a cool place away from direct sunlight and heat. Keep the lid tightly closed.\u003c\/p\u003e","brand":"BLUELAB","offers":[{"title":"Default","offer_id":48071111508020,"sku":"821679","price":22.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/0059\/9860\/files\/Bluelab_pH4_500mL_tallbottle.webp?v=1791415717","url":"https:\/\/growspacehydrostore.com\/products\/bluelab-ph-4-0-calibration-solution-500ml","provider":"Grow Space Hydro Store","version":"1.0","type":"link"}