Feature: 1. Smart Testing: High in accuracy and wide in testing range, the water quality tester is able to test pH, EC, TDS, SALT, S.G and TEMP. 2. Reliable Work: The algorithm chip together with electrodes ensures accurate and fast response, largely simplifying your operation. 3. Clear Display: Backlight LCD screen enables easier data reading, which also enables temperature compensation and unit conversion. 4. Wide in Using: Can be used to test your aquarium, swimming pool, bath water, drinking water, spa, soap mixes, food, wine and so on. 5. Easy Carrying: Comes with a light weight and a compact size, the TDS meter can be easily stored and carried for indoor and outdoor. Specification: Item Type: Water Quality Tester Model: PH 786 Material: ABS PH: 0.00-14.00PH EC: 0-19990us/cm, 0-199.0ms/cm TDS: 0-9990ppm, 0-199.ppt Salt: 0-199ppt, 0%-99.9% SG: 1.000-1.400 Temperature: 0℃-50℃, that is 32℉-122℉. Resolution: PH: 0.01PH EC: 1us/cm, <1999us/cm; 10us/cm, >1999us/cm; 0.1ms/cm. TDS: 1ppm, <1999ppm; 10ppm, >1999ppm; 0.1 ppt SALT: 1ppm, <1999ppm; 10ppm (>1999ppm; 0.1 ppt, 0.01%. SG: 0.001 Temperature: 0.1℃, that is 0.2℉ Resolution: PH: +0.03PH EC, TDS, SALT: ±2%F.S Temperature: ±1.0℃ Measurement Accuracy: 0.01ph Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃ Power Supply: 3 x LR44 1.5V button battery with 474mAh capacity, delivered with built in battery. . Package List: 1 x Water Quality Tester1 x User Manual