Made of high quality plastic shell, large display, durable and practical Just for measuring pool water pH No traditional chemicals just needed Ideal for home and laboratory pH testing applications such as household drinking water, aquariums, swimming pools, tap water, hydroponics, spa, laboratory and scientific testing As a high-precision measuring device, it can indicate the test result quickly Just for measuring pool water pH No traditional chemicals just needed Ideal for home and laboratory pH testing applications such as home drinking water, aquariums, swimming pools, tap water, hydroponics, spa, laboratory and scientific testing< /p> As a high-precision measuring device, it can indicate the test result quickly and accurately A handy tool for testing the pH of water Product description This water quality tester is designed to test pH and chlorine level for swimming pool and spa. It’s easy to use, no more chemicals. The large screen quickly shows the test result with high accuracy.