50X 6 In1 Swimming Pool SPA Test Strip Chlorine pH Alkalinity Water Hardness
Tests for free chlorine, bromine, PH, total alkalinity, total hardness and cyanuric acid. Test range for total alkalinity: 0 ~ 240 ppm. Total chlorine test range: 0 ~ 10 ppm. Free chlorine test range: 0 ~ 10ppm.