All for health: Global water quality problems are frequent and affect our health, we need to quickly identify and ensure that the home drinking water is safe and clean, free from common contaminants, and not contaminated above EPA Recommended Safe Levels (Maximum Contaminant Levels). Save money/ test 50 times: Water test kits for drinking water supports 16 parameters for each test strip, 50 strips in total, which equals 2000 water tests with 1 piece of product. This would save you from lab testing these separately at the cost of thousands dollars and long times. You can stay up to date on your water quality. 16 in 1 home water test kit: Water tester kit for drinking water are contain 16 paramete, it covers all the main contaminants you need to worry about, and it can test Total Hardness, Free Chlorine, Total Chlorine, Bromine, Total Alkalinity, pH, Nitrate, Nitrite, Copper, Iron, Lead, Nickel, Carbonate, MPS, Cyanuric Acid, Sulfite. It can detect problems in drinking water. If you have any problems about our products,pls contact us.