XIAOMI MIJIA TDS WATER QUALITY PURITY TESTER PPM METER Detect drinking water quality accurately. Provide more security for you and your family. Data show that, together with global pollution, the quality of drinking water in many parts of the world is of concern. Even in the United States, about one-fifth of drinking water is non-standard. Water quality tests should attract the attention of all households！ "TDS" - (Total dissolved solids) TDS meter for testing water quality, it can very intuitively and quickly reflect the quality and purity of the tested water! The XIAOMI TDS water meter allows you to monitor the water quality in any place: Tap water Mineral water Bottled water External water source when camping Aquarium water Pool water and a lot more Use PPM as the display unit. The lower the PPM, the cleaner the water quality, and the higher the PPM, the higher the degree of water pollution! Place it in water, press the button and read the value. Easy operation and clear display! It can detect three types of pollutants in water: Soluble salts such as calcium ions and magnesium ions Ionic organic substances such as ammonium acetate, sodium sulfonate, etc. Heavy metal ions such as chromium, zinc, lead, copper, etc. The product has a waterproof design, uses low-power chips, and uses a metal titanium probe, which is quick to detect and durable for quality.