TDS Meter Water Tester Pen LED Digital
Type: TDS meter
Model Number: TDS-3
Power source: LR44 1.5V*2
Temperature Range: 0-80℃
error range: ±2%
Weight: 30g
PPM range: 0--9999ppm
Back light: NO
Delivery within 5 - 8 day's
Drinking Water :The TDS for long-te..