Description50 Strips. Testing for: Chlorine, pH and Alkalinity.3 Tests on one strip.The Insta-Test 3 measures Free Chlorine 0-10 ppm (or Bromine 0-20 ppm), pH 6.2-8.4 and Total Alkalinity 0-240 ppm.Pool and spa owners are always looking for something quick and easy. It’s an unbeatable test system: no caps to worry about and even greater moisture protection. We guarantee the Insta-Test pool and spa strips will help the user maintain proper free chlorine levels and balanced water.The only strip with no required waiting period. Just swirl 3 times and read! PopTop caps are easy to open and shut – guaranteed for 1,000 openings.The patented vial has a molded desiccant liner, protecting the strips from moisture intrusion and eliminating loose desiccant bags. Measures free chlorine or bromine on one strip.50 Strips Per Bottle