Fast, Reliable, and Easy to Use - Simply immerse the TDS meter in water, stir, and you'll get results in seconds, with no calibration or setup required—it's ready to use right out of the box Durable and Enhanced Accuracy - Featuring a titanium alloy probe and the latest sensors, this digital TDS water quality tester provides nearly accurate readings every time. Plus, it can be easily recalibrated when needed to ensure precision Digital Water Quality Tester - The backlit display is clear and easy to read, allowing you to check the TDS value of water wherever you are—whether traveling, shopping, or on the go. It also features a unit switch for ℃/℉, making it convenient for users to view data in their preferred format Sensitive Probe for Instant Purity Results - Just press the button and place the tester in the water you want to check. A lower TDS value indicates fewer dissolved solids, which means the water is purer. LCD Display with Dual Readings - The large LCD screen simultaneously displays TDS, EC (electrical conductivity), and temperature values, along with a data hold function to easily accommodate various environments Versatile Testing for Any Type of TDS or EC - Ideal for checking total dissolved solids or conductivity in aquariums, swimming pools, or any water source. You can verify the effectiveness of RO, DI, or distillation systems and check nutrient levels in hydroponics Specifications: Material: ABS Plastic Testing Parameters: TDS, EC, Temperature Measurement Accuracy: ±2% Applicable Industries: Home, Hospitals, Swimming Pools, Disease Control Centers, Water Treatment Labs, Aquaculture Type: TDS Meter, Multi-Parameter Water Quality Analyzer Voltage: 3V Battery: CR3032 Measurement Range: 0-9999 ppm & 0-9999 µS/cm TDS Range: 1-9990 ppm EC Range: 1-9990 µS/cm Resolution: 1 ppm & 1 µS/cm Function: 3-in-1 water test pen, TDS water quality test, EC conductivity test, temperature test; with HD display