50/100PCS Chlorine DipSPA Swimming Pool Test Strips Hot Tub PH Tester Paper
Easy to test: Free Chlorine/Bromine ,pH,Total Alkalinity. Test range for total alkalinity: 0 ~ 240 ppm. Total chlorine test range: 0 ~ 10 ppm. Free chlorine test range: 0 ~ 10ppm. Effective chlorine, pH, and total hardness can be tested.