5-in-1 Digital PH Meter Water Quality Tester Smart BT PH/EC/TDS/CF/Temp Tester
Suitable for household drinking water, hydroponics, lab, aquarium. It can be used as a classic tester even if it is not connected to a smartphone. TDS: 0-19900ppm, 0-199.0ppt. EC、TDS、CF: ±2% F.S. TDS: 1ppm (＜1999ppm), 10ppm (＞1999ppm), 0.1ppt.