{"product_id":"hanna-1500ppm-tds-calibration-solution-20ml","title":"Hanna 1500 mg\/L (ppm) TDS Calibration Solution (20ml Sachet)","description":"\u003cp\u003eTDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result in improper readings. Pour a small amount into a shot glass and discard after use or use the sachets.\u003c\/p\u003e\n\u003cp\u003eTDS and EC Calibration Solution is available in a variety of sizes ranging from single-use sachets to quart bottles. All calibration solutions that we offer are made by either Hanna or General Hydroponics.\u003c\/p\u003e\n\u003cp\u003eThe 1500ppm solution uses the 442 scale \/ 0.70 conversion factor.\u003c\/p\u003e","brand":"HANNA INSTRUMENTS","offers":[{"title":"Default","offer_id":47777824505908,"sku":"763239","price":1.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/0059\/9860\/files\/solution.jpg?v=1778133197","url":"https:\/\/growspacehydrostore.com\/products\/hanna-1500ppm-tds-calibration-solution-20ml","provider":"Grow Space Hydro Store","version":"1.0","type":"link"}