Water Tester for Drinking Water: LOHAND Digital is specifically designed for testing water quality in Drinking Water, Tap Water, Well Water, Bottled Water, Filtered Water, Distilled Water, Refrigerated Water-so you can drink safely and stay healthy. 4 IN 1 Multi-function: Digital Water Meter LH-TDS9 features Total Dissolved Solids (TDS), Electrical Conductivity(EC), Celsius and Fahrenheit temperature, with all parameters clearly displayed on a large screen for easy reading. High Measurement: Consistently accurate readings of TDS:0-9999ppm and EC:0-9999μs/cm, Resolution: 1ppm,1μs/cm, Accuracy:±2%F.S. Ideal Design: Compact and for easy portability, industrial-grade components extended product life, . Automatically turns off after 2 minutes when not in use. Low-power design. Premium craftsmanship, featuring a -body construction with innovative design and exquisite finishing. Color: As Shown Material: ABS Package Contents: 1*TDS water quality test pen kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.