6 in 1 Test Strips,50PCS Hot Tub pH Test Paper pH Test Paper Soaking Test Strips for Swimming Pool Spa

Material: Made of premium imported filter paper. Easy to Use: Very simple for first-time users, just take a piece of test paper and dip it into water for about 2 seconds, take it out and lay it flat, and compare the reading with the color card after 15 seconds. Easy to Read: The color chart on the surface of the bottle is convenient for you to read the test strips. The large color chart allows you to easily distinguish the test results. Wide Application: Hot tub test strips suitable for drinking water, aquariums, swimming pools and spas, wastewater and other liquids. Upgrade 6 in 1 Test Strips: You can test total chlorine, free chlorine/bromine, pH, total alkalinity, cyanuric acid, total hardness at the same time. A pool test strip provides a composition of 6 substances, covering all the necessary parameters you are interested in