5-i-1 test strips for quick, on-site evaluation of free & total chlorine, range 0-10mg/L, in steps 0, 0.5, 1.0, 2.0, 10; total hardness as CaCO3, range 0-25mg/L, in steps 0, 1.5, 3, 7, 15, 25; total alkalinity as CaCO3, range 0-240mg/L, in steps 0, 40, 80, 120, 180, 240; and pH, range 6.2-8.4, in steps 6.2, 6.8, 7.2, 7.8, 8.4.
- Free Chlorine (0-10 mg/L)
- Free 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)