1pcs LCD Water Quality Tester 3 in 1 Portable LCD Display Digital Total Dissolved Solid Conductivity Temperature Meter Water Quality Monitor Tester New Description: LCD Digital Dissolved Solids Tester is used to test the purity of filter water quality, to check the performance of the water filter, to check the hardness (1 grain = 17ppm). To ensure that you always drink clean and safe water, a total dissolved solids tester is recommended for every family. Features: Convenient for data reading and recording, the LCD screen saves measurements for convenient reading and recording. Auto Power Off Function: Turn off the meter after 5 minutes of non-use to save battery. Automatic temperature compensation function when the meter in measurement mode. Available to shift between total dissolved solids and conductivity by clicking the shift button, continuously double click the SHIFT button, shift between Celsius and Fahrenheit temperature. Powered by 1pc 3V CR2032 battery, which can work about 1000 hours continuously. Ideal tools for water purifiers, swimming pool, laboratory in aquatic plant, CDC, aquaculture farms, hospital, etc. Specifications: Condition: Type: Portable Water Quality Tester Color: As the picture Accuracy: ± 2% Test Item: Total Dissolved Solid, EC, Temperature Total Dissolved Solids: 0 - 9990ppm EC: 0 - 9990mu; s/cm Temperature measurement range: 0.1 - 80.0 °C Fahrenheit: 32.0 - 176.0 °F Power: CR2032 battery (3V) X 1 (not included) Size: approx. 3cm x 15.5cm x 1.4cm/1.1" x 6.1" x 0.5" Package weight: about 60g How to use? 1. Please detach the electrode sleeve before use 2. Press the switch; Place the electrode in test solution 3. After numerically stable, press the HOLD button and remove it from the solution to read 4. After reading, turn off the meter, wipe the electrode in front of the sleeve EC value for reference only Clean drinking water: EC = 1 - 10 mu; s/cm Drinking water: ECle; 2000 mu; s/cm Contaminated water: ECgt; 2000 mu; s/cm Total Dissolved Solids Range and Standard for reference only: 0 - 49 ideal drinking water 50 - 99 mineral water 100 - 199 hard water 200 - 399 reluctantly acceptable water 400 - 499 bad ge water; 500 U.S. EPA Specified Polluted Water Package Included: 1 X Water Quality Tester (Without Battery) 1 X User Manual 1 X Free Leather Bag Note: 1. Please allow 0 - 1cm error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Keep the electrode clean, cover the electrode protective sleeve, remove the battery for long periods of inactivity. 4. The above "reference value range" is just for reference, depends on different requirements, the reference value may be different for people in different countries or areas. 5. Please read the user manual carefully before use.