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. Specification: 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 Features Versatile Water Quality Testing: Suitable for various applications including drinking water, swimming pools, aquariums, and hydroponics, providing accurate and reliable measurements for peace of mind. Fast and Simple Operation: Wide application range with fast measurement and simple operation for convenient use in different settings. Sensitive Electrode Sensor: Equipped with a sensitive electrode sensor to read accurate values, ensuring precise water quality detection. High Sensitivity Probe: Features a high sensitivity probe for more accurate measurement, enhancing practicality and reliability. Durable Construction: Made of high-quality ABS material, corrosion-resistant and durable for long-lasting use, making it suitable for scientific experiments in schools.