Features 1、Suitable for drinking water, swimming pool, aquarium, reverse osmosis system, spa or hydroponic. 2、Wide application range, fast measurement and simple operation, reliable to use. 3、The water quality tester has a sensitive electrode sensor to read accurate values. 4、High sensitivity probe for more accurate measurement, more practical to use. 5、Adopting high quality ABS material, resistant to corrosion and durable in use. 6、Easy and convenient to use, very suitable for scientific experiments in children schools. Specifications Condition: 100% Brand New Item Type: Water Quality Tester Material: ABS Conductivity: 0.055us/cm TDS: 0-1000ppm Celsius: 0.1-80.0℃ Fahrenheit: 32.0-176.0℉ Battery: 3 x 1.5LR44 (Included) Product Size: Approx. 159 x 34 x 16 mm / 6.3 x 1.3 x 0.6 in Weight: Approx. 78g / 2.8oz Package List 1 x Water Quality Tester (Battery Included) 1 x User Manual