1 package containing approximately 50 test strips that test for: Free Chlorine, pH, Total Alkalinity, and Stabilizer (Cyanuric Acid) within the following ranges:
pH: 6.2-8.4
Free Chlorine: 0-10 ppm
Total Alkalinity: 0-240 ppm
Stabilizer (Cyanuric Acid): 0-300 ppm