DescriptionBullet Points:1. Improve 6 inches (about 6 cm) 1 liter: test pH, total chlorine, no chlorine, total alkalinity,purificationacid, total hardness, etc., more powerful than 5 or 4 pool test panels and liquid testing tools2. Test 17S: There are 2 test strips for submerged swimming pools, hold about 15 in the air, thenMatch the color of the stripthe colorthe back of the bottle, which takes about 17 seconds.Pool test strips are easyuse and are suitable even for beginners.3. Environmental protection: The quality of the swimming pool water should be tested every week. A pack of test stripsIncludes 50 test strips and pool seals, 5 heavy duty wrapshumidity for storagelong term.4. Health: Test strips are used for water testing in swimming pools, spas and bathsturmoil.the right amount of chemicals is kept in the pool to avoid health problems and property damage.5. Easycarry: Size: 96*36mmDescription:6 in 1 Swimming Pool Test Paper Residual Chlorine pH Value Alkalinity Hardness Test Strip One Bottle of 50Features:6 in 1 Swimming Pool and Hot Spring Water Test Strips.Test for free chlorine, bromine, pH, total alkalinity, total hardness and cyanuric acid.Test twicethe pool twice a week for best results.A good way to easily understand the quality of your water in the key.Specification:Type: SPA test strip for swimming poolTest: TC, CL, PH, ALK, CYA, THQuantity: 50 / bottleTest range:Total Chlorine Test Range: 0~10ppmFree chlorine test range: 0~10ppmpH test range: 6.8~8.4Total Alkalinity Test Range: 0~240ppmTotal hardness test range: 0~1000Cyanuric acid test range: 0~240Product List:1 * Bottle of Swimming Pool SPA Test Strip (50/bottle)