Features:<br />6 in 1 pool test strips, can be used to test pH, total chlorine, free chlorine, total alkalinity, cyanuric acid, total hardness.<br />It is ideal for testing human pH, drinking water, swimming pools, hot springs, aquariums, science education, laboratory use, hydroponics, etc.<br />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.<br />It is important to test your swimming pool, spa or hot hub frequently to keep the water clean.<br />The box contains 50 pieces of test strips, high quality fiber paper provides instant and reliable result.<br/>Specifications:<br />Type: Water Test Strips<br />Material: Paper<br />Quantity: 50 strips/bottle<br />Package Size: 9.5*3.2*3.2cm / 3.7*1.3*1.3in<br />Package Weight: 28g / 1.0oz<br/>Package List:<br />1 * Bottle of Water Test Strips<br/>