One of the most common chemicals used to prevent chlorine loss in swimming pools is Cyanuric Acid (also called CYA
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5 inch and meets Massachusetts and New York state code
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Taylor Complete FAS-DPD Chlorine, pH, Alkalinity, Hardness, CYA (FAS-DPD Hi-Range) Test Kit .75 Oz. - K-2006 state_South Carolina One of the most commonThis is a Complete Kit for Chlorie, pH, Alkalinity, Hardnss, and CYA (FAS DPD High Range) with . 75 ounce bottles. The K 2006 tests for Free and Combined Chlorine, Total Alkalinity, Cyanuric Acid, Hardness, and pH with Acid Base Demand. It does this by using the 2000 Series Comparator, visual determination and drop test systems. The K 2006 kits use FAS DPD which is an enhancement to the regular DPD, blended indicator, turbidimetric Phenol Red