Feature: 1. It is a multifunctional water quality tester, which can test ph, tds, ec, salinity and temperature of the water. 2. High precision and fast response: fast to get the testing result and can test the PH about 0.01‑14.00pH, temperature about 0.1‑60.0℃ 32.0‑140℉ and salinity value about 0.01‑25.00%. 3. Adopts the digital screen display with backlight, which is more clear and convenient to read data. 4. Suitable for water sources, aquariums, hydroponics, swimming pools and other water systems. 5. Compact pen-shape design, lightweight for mobility, you can test water anywhere to get the purest water. Specification: Condition: 100% Brand New Item Type: Water Quality Tester Material: ABS Electrical Conductivity Test Range: 0-10000uS/cm 10.01-19.99ms 20.1-400mS/CM Resolution: 1uS/cm; 0.1 mS/CM Accuracy: ±2% of the reading Tds Test Range: 0-1000ppm 1000ppm -10000ppm 10.1-200.0 PPT Resolution: 1ppm; 0.1ppt Accuracy: ±2% of the reading Salinity (Salinity) Measuring Range: 0.01-25.00% Resolution: 0.01% Accuracy: 0.01-5.00% (±0.1%) 5.10-25.00%(±1%) PH Test Range: 0.01-14.00pH Resolution: 0.01pH Precision: ±0.05pH Temperature Compensation: Automatic temperature compensation (ATC) Working Environment: 0-60.0℃ (32.00-140 ℉); 100% RH TDS Factor: 0.5 Temperature Range: 0.1-60.0℃ 32.0-140℉ Temperature Accuracy: ±0.5℃ Temperature Resolution: 0.1℃/℉ Automatic Power-off: 5 min Battery: 3 x 1.5 LR 44 (not included) Display Size: Approx. 33 x 24mm / 1.3 x 1in Size: Approx. 183 x 37 x 37mm / 7.2 x 1.5 x 1.5in Display: Supports backlight Waterproof Grade: IP67 Power Consumption: 2.9mA Shutdown Power Consumption: 0 Weight: Approx. 160g / 5.7oz . Package List: 1 x Water Quality Tester 1 x Instruction Note: 1. Please allow 1‑3cm error due to manual measurement. Thanks for your understanding.2. Be sure to clean the electrodes after each use.3. Accuracy within 150ppt is relatively accurate, while deviation above 160ppt is relatively large.4. This product will be shipped without powder.