Insta Test Water Test Strips 3 Way 50 count. The only instant water test strip on the market today. Spa techs and consumers will love the convenience and simplicity ofinsta-Test® Pop-top caps on vials provide moisture protection. Measures Free Chlorine 0-10 ppm (or Bromine 0-20 ppm), pH 6.8-8.4 and Total Alkalinity 0-180 ppm
