50/100pcs 3/5/6/7 in 1 Swimming Pool PH Test Strips SPA Swimming Pool Water Tester Paper Hardness Tool for Chlorine Bromine

It's a great honor for you to visit my store. Good luck with your favorite purchasesHigh-concerned chemical : None Model Number : PH Test Strips Type : Cleaner Brand Name : APWIKOGER Origin : Mainland China Origin : Mainland China Model Number : Test Strips Bottle size : about 96 * 36mm/3.77 * 1.41 inch Total hardness : 0-50-100-250-500-1000 Total bromine : 0 0.5/1 1/2.0 3/6.6 5/11 10/22 Total chlorine gas : 0-25-50-100-250-500 PH : 6.2-6.8-7.2-7.6-8.0-8.4 Total alkalinity : 0-40-80-120-180-240 Residual chlorine : 0 0.5/1 1/2.0 3/6.6 5/11 10/22 Acid cyanide : 0 30-50 100 150 240