5 in 1 Water Quality  Test Strips, 50 tests

5 in 1 test strips are great for quick, on-site evaluations of water quality with reliable results on every test. These multi-parameter test strip for five water quality measurements on 1 strip

• Free Chlorine (0-10 mg/L)
• Total Chlorine (0-10mg/L)
• Total Hardness (as CaCO3, 0-25 gpg and 0-425 mg/L)
• Total Alkalinity (as CaCO3, 0-240 mg/L)
• pH(6.2 -8.4)

gpg - grains per gallon 17.1 mg/L