TotalDissolvedSolids Meter, TotalDissolvedSolids EC Meter and Temperature Meter. For accuracy and reliability choose the DOY 3-in-1 TotalDissolvedSolids Meter. The water that flows from our taps is full of chemicals, pollutants and metals. Well, the only way to make sure your water is clean and healthy is to test it regularly. With this TotalDissolvedSolids tester you can check any time on your water filtration, ensuring that you and your family won't be exposed to unhygienic drinking water. A versatile tool that saves you money while providing the best for your health Features: 1. Lock function: makes it easy to read and record, press HOLD button then remove from test solution. 2. 4 Display modes: press SHIFT button: TotalDissolvedSolids - ppm C, EC - s/cm C, TotalDissolvedSolids - ppm F, EC - s/cm F. 3. 5 minute Auto Shut Off feature, so battery won't run down. 4. Measurement Range: Conductivity: 0 - 9000 s/cm TotalDissolvedSolids: 0 - 9000 ppm (parts per million) Degrees Celsius: 0.1 - 80.0C Fahrenheit: 32.0 - 176.0F 5. Accuracy: 2% 1. Due to different monitors and lighting effects, the actual color may be slightly different from the image 2. Due to manual measurement, please allow 1-3cm deviation Size: 153*16*29mm Shipping color: yellow Quantity shipped: 1