50 Strips 7-in-1Pool And Spa Test Strips For Hot Tub Swimming Pool Kits Describe: Pool test strips can be used to test pH, total , free , total alkalinity, cyanuric, total hardness, etc., with more functions than other test strips and liquid test kits. Soak the test strip in water for 2 seconds, then leave it in the for about 15 seconds, then match the color of the tape to the back of the bottle. Read data in just 17 seconds Swimming pool water quality should be tested once a week. Our test strips include 100 pool strips for long-term storage. Test strips for swimming pools, hot springs, and hot springs test water quality, which can ensure the water quality of swimming pools and avoid health problems and property damage. notes: 1. Due to many factors such as the brightness of the display and the brightness of the lights, the actual color of the item may be slightly different from the picture displayed on the website. 2. There is a slight deviation in the measurement data. 3. There may be an error of 1-3 cm. Size: 9.3*3.5cm Include: 1ph test strips (50 pieces) pet hair removal tool pet toy womens tops mothers day gifts dog bed