50-200PCS 3in1 Chlorine Dip Test Strip Hot Tub SPA Swimming Pool pH Tester Paper
Easy to test: Free Chlorine/Bromine ,pH,Total Alkalinity. Total Alkalinity Test Range: 0~240ppm. Free Chlorine Test Range: 0~10ppm. Test at both ends of pool twice a week for best results. pH Test Range:6.8~8.4.