50PCS Water Quality Test Papers

Features:
6 in 1 pool test strips, can be used to test pH, total chlorine, free chlorine, total alkalinity, cyanuric acid, total hardness.
It is ideal for testing human pH, drinking water, swimming pools, hot springs, aquariums, science education, laboratory use, hydroponics, etc.
Easy to use, soak in water for 2 seconds, then take it out, leave it in the air for about 15 seconds, compare with the color chart on the bottle to obtain clear and accurate water quality results.
It is important to test your swimming pool, spa or hot hub frequently to keep the water clean.
The box contains 50 pieces of test strips, high quality fiber paper provides instant and reliable result.