Taylor Troubleshooter DPD Pool and Spa Water Test Kit - K-10

Taylor K-1004 DPD, 6-in-1 Pool Test Kit for for Free & Total Chlorine, Bromine, pH, Acid Demand, Total Alkalinity, 100+ Tests, Quick & Easy for Pools & Spas | Made in The USA

EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

AquaChek 7-Way Pool and Spa Test Strips - Silver Pool Test Strips For pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, and Cyanuric Acid - Water Quality Testing Kit (100 Strips)