Swimming pool water tester:5 in 1,7 in 1,16 in 1 pool test strips, easy and quick analysis in 2 seconds, use colorimetry to quickly obtain pH, residual chlorine, bromine, total chlorine, total alkalinity and total hardness in water testing. It is widely used in swimming pools, SPAs and other industries. Pool Product,Water Quality Tester: Hold the pH tester under water for 2 seconds and stir. Remove and let stand 15 seconds. Compare the pads on the strip with the comparison chart. Pool ph test,PH Test Strips Pool: Water Test Strips Check the results with the color card on the container. The test paper is of high precision, easy to use and convenient to carry. Water test strips. Attention: The test results are based on the color card on the box. Pool water test strips: 50 pH test strips, 10 single pieces each shrink-wrapped in a aluminum outer packaging. All are protected from moisture in a resealable jar. The foil packaging ensures a long shelf life by protecting the test strips from moisture. Multifunctional water tester: not only suitable for for swimming pools, thermal baths but also for testing drinking water, waste water and other liquids.