This multifunctional meter is an essential tool to improve your life quality. This digital ph tester can be applied in the following applications; main applications: drinking water quality test, swimming pools quality monitor; other applications: PH balance measurement in /DI system, aquarium, spa, hot tub, fish tank, garden water or hydroponics.More precise accuracy design and larger testing range than others to your drinking water is healthy. TDS meter is designed with 5-in-1 function, which can be measured PH, TDS, EC, SALITY, and TEMPERATURE of water. Fulfill all your testing requirements - fully test water quality!it is ready to use right out of . Just dip the probe of the PH tester into the liquid to start the test Easy to carry & use. Everyone could use this pocket size small but professional tds tester device to measure your drinking water, pool, fish tank, garden water and etc. And pH meter features a green Backlight LCD to help you see the measurement clearly in any situation. Cover without It is a multi-functional water quality pen product, which can measure ph pH, tds solubility, ec conductivity, salinity and temperature. It is a waterproof water quality test pen with five functions. It has high performance, pen shape design, fast numerical stability and Accurate calculation results.Parameters: TDS Measuring range: 0-1000ppmEC measurement range: 0-10000US/cmPH measurement range: 0.01-14.00pHSalinity measurement range: 0.00-25.00%Seawater salinity measurement range: 10.1-200.0ppt.Accuracy: 0.01-5.00% (0.1%)5.01-25.00% (1%)Display size: 33 x 24mmDisplay: support backlightWaterproof grade: IP67Color: Material: plasticPackage Contents:1 x Water Quality Tester