Aquachek 541604A 7-in-1 Pool and Spa Test Strips with Color Chart

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 room for error FREE MOBILE APP: It uses photo capture technology to interpret results & provides a tailored chemical treatment plan for your pool; No more guesswork with AquaChek Connect app EASY TO USE: Dip the 7-way strip & compare with the color chart; Accurate results in 30 seconds; Ideal for those with the Select Complete Kit; Test water at least twice a week for safe, balanced water SAFE & CLEAN WATER: Each color pad is designed with unique paper to optimize color vibrancy & mitigate color-bleeding to help maintain healthy water chemistry