Aquachek 5 in 1 Test Strips, Bottle of 50

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

• Free Chlorine (0-10 mg/L)
• Total Chlorine (0-10 mg/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)