1.Easy to use: this water quality tester is very easy to use. You just need to add a water sample to the test kit and follow the instructions to read the results. The testing process is quick and easy, even if you don't have a scientific background. 2.The reusable test kit comes with a complete set of test cartridges and reagents with additional test pieces to ensure you can repeat the test many times. This allows you to monitor your water quality to maintain a y level. 3.HIGH RELIABILITY This test tool is very accurate. This means that you can rely on the water quality test results to understand the water quality situation and keep you and your family y. 4.Wide application: suitable for swimming pools, aquariums, hot tubs and bodies of water. This water quality test kit can also test the water quality of other water sources, including drinking water, farm water, bathroom water and more.