6-in-1 pool test strips: with these pool pH test strips, you can test 6 important parameters once: PH, total alkalinity, total chlorine, free chlorine/bromine, cyanuric acid, total hardness. Easy to use and read: immerse the pool test strip under water for 2 seconds, take it out and wait 15 seconds and check the results using the colour chart on the container. Easy to store: 50 pieces per bottle with 5 individual moisture-proof packages. The sealed storage tank protects the test strips from moisture to ensure long-term storage and usability. Multifunctional water tester: PH test strips are ideal for testing the pool, drinking water, hot tubs, tanks, water from sources and more. It is a good helper to quickly and accurately capture the water quality. Quality service: If you have any questions about our products, please feel free to contact us by email. We will reply to you within 24 hours. › See more product details Model: Size: Color: