Specifications: With this handheld digital TDS meter, you can verify the quality of various water sources to ensure optimal water quality. Scope of application: pure water production and drinking, electroplating liquid, boiler water, fish tank water, swimming pool water, photographic liquid, wells, deep well water, laboratory, aquaculture, food processing, home, office, teaching, ionization water, cosmetics, city government water supply, travel health care, and more. Type: Digital TDS Meter Case Material: Plastic TDS Range: 0 - 9990 ppm Temperature Range: 0 - 80C / 32 - 176F Precision: 2% Automatic Temperature Compensation: Yes Battery: 2 x 1.5V Button Batteries (Included) Features: Data Hold, LCD Display, Lightweight, Portable Dimensions: 15.5 cm x 3.1 cm x 2.1 cm / 6.10" x 1.22" x 0.83" (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Digital TDS Meter (Battery Included)