Aquatrol ATS-51 Test Strips - 5 In 1 Water Quality Test Strips are professional grade 5 in 1 test strips designed for optimal, on-site testing and evaluation of your water quality.
5 Tests in One; Measurement Range:
- Free Chlorine (0-100 mg/L)
- Total Chlorine (0-100 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)