[High-quality material]: The water quality analyzer is made of plastic and metal materials, small and light, sturdy and durable.[Utility tool]: A simple and economical way to test water quality and see the condition of your drinking water. Water quality that does not contain harmful substances to the human body and odorous is the best.[Easy operation]: Simple operation, use 220V power supply. The test is fast and the results are obvious.[Color analysis]: Due to the action of the current, the metal particles initially dissolved in water, such as manganese, potassium, cobalt, etc., are gradually reduced and aggregated to form metal clusters. Due to the different color rendering of different metal ions, color separation occurs. Electrolyzed water displays different colors, indicating various impurities in the water.[Wide Applications]: Ideal detection tool for drinking water, water filtration and purification, hydroponics, aquariums, swimming pools and spas, etc.