Features: 1. Have you ever seen the inside of the sink faucet? Due to old water pipes, corroded faucets and poor management, the water we use is dirtier than we thought 2. Our tap water filter can detect water quality and has a water purification system to purify and improve water quality Help you save water and detergent. 3. By using environmental protection methods, it can effectively blocks dust, impurities, rust and other particles found in old water pipes. 4. If you eat rust and heavy metals for a long time, it is harmful to our health. Use our faucet filter to enjoy healthy water. 5. Splash-proof, and effectively reduce pollutants-filter out odors and impurities. Specification: Name: Water quality detector Size: 70*28mm Filter elements: PP cotton Shell: Plastic Features: 1. Detect the degree of self-employed water pollution 2. Detect the effect of water purifier purification, intuitively detect impurities in the water 3. Good quality and low price, exquisite and smart, easy to install, intuitive effect Applicable people: 1. Household use 2. Enterprise use 3. Test for personal use Instructions for use: 1. Please put this product on the faucet: 2. After using water for a period of time, the color of PP cotton becomes darker, indicating that the turbidity of tap water is higher. The darker the color, the more pollutants: 3. This product can only filter large particles of impurities such as rust and silt in the water. The filter elements is for one-time use. 4. The testing process does not affect the normal use of tap water, please go to this product in time after testing 5. This product is only used to demonstrate the quality of water, if you want to drink it safely and healthy. For sanitary water purification, please use professional household water purification equipment. Package List: 1/5/10optional x Tap Water Purifier Water Quality Detectorfaucet is not included