AquaChek 512082-02 TruTest Digital Test Strip Refills for Swimming Pools, 50-Count, 4-Pack

Tests the most critical parameters for keeping a clean & balanced pool or spa for free Chlorine/Bromine, pH, and Total Alkalinity,Using medical industry technology, our test strips offer comparable accuracy to liquid tests No measuring & counting drops of reagent, leaving less room for error,No interpreting colors Just dip the test strip, remove it, & insert it on the test strip reader Accurate digital results in 15 seconds Test water at least twice a week,Brand: AquaChek