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% + Conversion Factor: NaCl (avg. 0.5) + 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) (LR44 or equivalent) + 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) + Weight without case: 56.7g (2 oz)