1、Suitable for testing pH value in drinking water, swimming pools, aquariums, RO systems, spas or hydroponics. 2、The electrode can be directly inserted into the measured solution, protected from magnetic interference in water. 3、High precision and accurate response: fast to get the testing result and can test the TDS value for any 1‑999ppm liquid which you wanna test. 4、Compact and lightweight for mobility, you can test water anywhere to get the purest water. 5、Large screen and waterproof design, it is easy to measure and observe the data. 6、One measurement can be completed in 5 seconds with accuracy up to ±2% for better performance. 1 x Water Quality Tester1 x User Manual Condition: 100% Brand NewItem Type: Water Quality TesterShell Material: ABSModel: TDS-3Color: Light GreenMeasurement Range: 1-999PPMTemperature: 0-80 ℃Accuracy: ±2%Battery: 2 x 1.5V LR44 Button Battery (not included)Size: Approx.155 x 29 x 15mm / 6.1 x 1.2 x 0.6inWeight: Approx. 56g / 2oz