50pcs Test Strips Multipurpose 3-in-1 Residual Chlorine PH Value Alkalinity Test Strip Easy Detection for Pool Spa Aquarium

Battery Included : No High-concerned chemical : None Is Smart Device : No Model Number : Test Strips Origin : Mainland China Certification : None Test Strips : Residual Chlorine PH Value Alkalinity Test Strip Swimming Pool PH Test Paper : Water Test PH Strips Water Quality Test Strips : Water Tester Paper Origin : Mainland China Model Number : Test Strips Bottle size : about 100 * 37mm/3.93 * 1.45inch Residual chlorine : 0-10/22ppm PH : 6.8~8.4ph Total alkali : 0-240ppm