Feature:1. Application scope: pure water production and drinking, electrofluid, boiler water, fish tank water, swimming pool water, photographic washing fluid, well water, deep well water, laboratory, aquaculture, food processing, home, office, physical and chemical teaching, ionized water, cosmetics, municipal water supply, travel health care.2. The test is accurate and reliable, the test is accurate and the test range is 09990ppm.3. This type of TDS detection pen can detect heavy metals and turbidity in water.4. The product is small and portable and can be placed in a bag without taking up space.5. This product has excellent workmanship and very precise measurement.Specification:Condition:100% Brand New Item Type: TDS Water Quality TesterMaterial: ABSColor: WhiteTest Items: Heavy Metals, TurbidityPower Supply: Button Battery CR2032 3V (not included)Test Range: 09990ppmMeasurement Accuracy: 2%.Package List:1 xTDS Water Quality Tester1 x ManualNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.