{"product_id":"gh-ph-4-01-calibration-solution-quart","title":"GH pH 4.01 Calibration Solution Quart","description":"General Hydroponics® Meter Calibration Solutions General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics® technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":48465544741119,"sku":"HGC722020","price":32.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0072\/8324\/5092\/files\/hf_20260721_141711_90489dbb-0e14-45b0-a3f2-3abe45832c9c.png?v=1784928686","url":"https:\/\/costaricahydroponics.com\/en\/products\/gh-ph-4-01-calibration-solution-quart","provider":"Pachamama Indoor Farming Culture","version":"1.0","type":"link"}