Feature 1Suitable for drinking water, swimming pool, aquarium, reverse osmosis system, spa or hydroponic. 2Wide application range, fast measurement and simple operation, reliable to use. 3The water quality tester has a sensitive electrode sensor to read accurate values. 4High sensitivity probe for more accurate measurement, more practical to use. 5Adopting high quality ABS material, resistant to corrosion and durable in use. 6Easy and convenient to use, very suitable for scientific experiments in children schools.SpecificationCondition: 100% Brand NewItem Type: Water Quality TesterMaterial: ABSConductivity: 0.055us/cmTDS: 0-1000ppmCelsius: 0.1-80.0Fahrenheit: 32.0-176.0Battery: 3 x 1.5LR44 (Included)Product Size: Approx. 159 x 34 x 16 mm / 6.3 x 1.3 x 0.6 inWeight: Approx. 78g / 2.8oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Water Quality Tester (Battery Included)1 x User Manual