AquaChek 541604A Select Kit Test Strip for Swimming pool

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: No more messy drops; Dip the test strip, remove it, wait 15 seconds, & compare with the color chart on the comparator; 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