Three-in-one chemical test: The swimming pool test paper can test 3 parameters, which can be used for liquid testing with other test papers and more functional kits. Easy to use: Our test papers are very clear and the colorless color cards make them easier to handle and read. In addition, they are faster and simpler than liquid test kits, and the accuracy is as good or better. No need to wait for others to test your water quality, enjoy accurate and reliable results anytime, anywhere. Faster and easier: Faster and simpler than the liquid test box. Compared to liquid test boxes, test strips are faster, simpler, more accurate or better. This is a quick and easy water testing method, and has the ability to resist VC interference. Portable packaging: Each bottle of test strips contains 50 pool test strips, 50 strips mean 50 tests. Each pool test strip can provide fast and accurate results for any water source, including freshwater and saltwater pools, spas and hot tubs A good choice for the swimming pool ： The test strip is used to test the quality of the water. You can make sure that the correct amount of chemicals are kept in your pool to avoid health issues and property damage. Features: Name: test paper three-in-one water Packaging: boxed Packing size: about 10 * 4 * 4cm / 3.94 * 1.57 * 1.57inch / p Product size: about 9.5 * 3.5cm / 3.74 * 1.38inch Product gross weight: about 27g Packing List: 1 * three-in-one water test paper Notes: Due to lighting effects and angles shooting, there is color difference in the product, please understand. Due to manual measurement, there is tolerance in the product size.