7-IN-1 TEST STRIPS: Tests the most critical parameters: pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, & Cyanuric Acid AQUACHEK ACCURACY: Using medical industry technology, our test strips offer comparable accuracy to liquid tests; No measuring & counting drops of reagent, leaving less...

Fresh, Accurate Testing for the Pool Season Ahead - AquaChek Yellow Chlorine 4-in-1 includes 50 precision test strips—perfect for a full season of reliable water testing for pools and spas that use chlorine. No expired extras, no bulky packs—just fresh, accurate results from AquaChek,...