PH EC TDS Salinity Temp 5 in 1 Pen Meter LCD Digital Water Quality Monitor Test
TDS factor: 0.4 to 1.0. Save power, extend battery life. Accuracy: ±0.05pH. Resolution: 0.01pH. 3 PH Buffer Powders. Temperature accuracy: ±0.5℃. Accuracy: ±2% of the reading. 1 Water Quality Monitor Tester.