Check the listing for details. HM Digital TDS-3 Water Purity PPM Testing Tester/Meter, with Carry Case. Condition: New. Listed at 13.99 USD. HM DIGITAL TDS-3 TDS Tester with Carry Case - Authorized Distributor - Brand New Meter with 2-Years USA Manufacture Warranty! *** Check out more TDS Meters/Testers (Click Here) *** Check out more HM Digital Products (Click Here) *** Warning: There are lots fake TDS-3 meters on the eBay, please make sure your are ordering the HM Digital Brand one. FEATURES * Ideal for commercial use. Includes a carrying case with belt clip. * Highly efficient and accurate due to its advanced microprocessor technology. * Hold Function: saves measurements for convenient reading and recording. * Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. * Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. * Built-in digital thermometer * Display: large and easy-to-read LCD screen. * Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. * Also available in "x10" mode: reads in increments only of 10 ppm (0-9990 ppm). SPECIFICATIONS * TDS Range: 0 - 9990 ppm (mg/L) * Temp. Range: 0 - 80 degrees Celsius * Resolution: 1 ppm, 1 degree Celsius (also available in 10 ppm) * Accuracy: +/- 2% * ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Fahrenheit) * Power source: 2 x 1.5V button cell batteries (included) * Battery life: 1000 hours of usage * Dimensions: 15.5 x 3.1 x 2.3cm (6.1 x 1.25 x 1 inches) * Weight with case: 76.5g (2.7 oz)