{"product_id":"gh-ph-4-01-calibration-solution-8-oz","title":"GH pH 4.01 Calibration Solution 8 oz","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":48465544839423,"sku":"HGC722015","price":11.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0072\/8324\/5092\/files\/hf_20260721_141526_c839018d-23b6-4d4c-b961-3f3f8b57cfe8.png?v=1784928690","url":"https:\/\/costaricahydroponics.com\/en\/products\/gh-ph-4-01-calibration-solution-8-oz","provider":"Pachamama Indoor Farming Culture","version":"1.0","type":"link"}