50pcs 6 in 1 Chlorine Dip Test Strips Hot Tub SPA Swimming Pool PH Tester Paper
Easy to test: Total Chlorine, Free Chlorine/Bromine, pH, Total Alkalinity, Total Hardness, Cyanuric Acid. Test range for total alkalinity: 0 ~ 240 ppm. Total chlorine test range: 0 ~ 10 ppm. Free chlorine test range: 0 ~ 10ppm.