General description This TDS-3 LCD Digital Portable Drinking Water Meter is designed to test the quality of various waters, ensuring you enjoy the best water quality and temperature. Please note that it cannot test pH or specific values of substances dissolved in the water. Technical specifications Measurement range: 0 to 999 ppm (resolution: 1 ppm) Measurement range: 1000 to 9900 ppm (resolution: 10 ppm) Auto shut-off function after 10 minutes of non-use Lock function to save measurements for easy reading and recording Compatibility and accessories Suitable for use in water purifiers and filters Can monitor the quality of food (vegetables, fruit) and beverages Applicable in swimming pools, spas, aquariums, and hydroponics