HK-ST 5-1 Pool Spa Hot Tub Water Test Strips Chlorine PH Hardness Alkalinity for Intex (4 Pack)

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Product Description

5-in-1 Test Strip: pH, Free Chlorine, Total Chlorine, Total Hardness, Total Alkalinity. Measures pH 6.2 to 8.4, Free Chlorine 0 to 10 ppm, Total Chlorine 0 to 10 ppm. Total Hardness 0 to 1000 ppm, and Total Alkalinity 0 to 240 ppm with instant results.