Free Chlorine 0-10 ppm (or Bromine 0-20 ppm), Total Chlorine 0-10 ppm, pH 6.8-8.4, Alkalinity 0-180 ppm and Total Hardness 50-800+ ppm.

Available in 50 strip vials and packaged in 12, 60, and 100 packs.

Also, packaged with Pool & Spa Owner's Handbook.