{"product_id":"drop-test-hardness-calcium-edta","title":"Taylor Calcium Hardness Drop Test, EDTA","description":"\u003cp\u003eThe Taylor K-1770 is a drop test for calcium hardness using the EDTA method, scaled so that each drop equals 10 ppm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow it works\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYou take a measured water sample, add the indicator, then add the titrating reagent drop by drop until the sample changes color. The number of drops multiplied by ten is your calcium hardness in parts per million. It is a straightforward count with no meter to calibrate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy hardness matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCalcium hardness is one of the numbers that decides whether your water is scaling or aggressive. Water that is too soft pulls calcium out of plaster, grout and stone coping. Water that is too hard drops it back out as scale on tile, heater elements and salt cells. A kit that tests hardness on its own is worth having when your main kit only covers chlorine and pH.\u003c\/p\u003e","brand":"Taylor Technologies","offers":[{"title":"Default Title","offer_id":48633425101012,"sku":"TAY-45-940","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4d3251b2-4cc5-4163-af23-1277ab1928a8.jpg?v=1788801673","url":"https:\/\/www.activepoolsupply.com\/products\/drop-test-hardness-calcium-edta","provider":"Active Pool Supply","version":"1.0","type":"link"}