TDS meter

Features:
Convenient, efficient and accurate.
LCD digital display, easy to read, Long battery life.
Hold function: save measurements for convenient reading and recording.
Auto-off function : turns off meter after 10 minutes of non-use to conserve batteries.
Dual range :measure form 0-999ppm ,with a resolution of 1ppm. 
The resolution is 10ppm indicated by drinking x10 symbol factory calibrated.
Test Items: Heavy metals, total hardness, detecting water temperature
Specifications:
Color: Blue
Display: LCD Digital
Test Range: TDS:0-9990 PPM
Resolution: 1 PPM
Test Precision: ±2%
Battery: 3 V * 1 button battery
Environment temperatuer: 0 ~ 80°C