QIUSUO Portable Multi Parameter Water Quality Meter Tester with Calibration Solutions for Measuring pH ORP Ion Concentration Conductivity TDS with PH Range -2.000 to 20.000 Accuracy ±0.002 pH

QIUSUO Multiparameter Water Quality Meter Portable Multi Parameter Water Quality Meter with Conductivity Standard Solutions Range -1999.9 to 1999.9 mV for Measuring pH ORP Ion Concentration Conductivity

QIUSUO Multiparameter Water Quality Analyzer Portable Multi Parameter Water Quality Tester with Conductivity Standard Solutions Accuracy ±0.002 pH for Measuring pH ORP Ion Concentration Conductivity TDS Salinity

QIUSUO Multi Parameter Water Quality Analyzer Portable Multiparameter Water Quality Analyzer with Conductivity Standard Solutions TDS Range 0 to 10.00 100.0 1000 ppm 10.00 200.0 ppt Resistivity Rang 0.00 to 20.00 MΩ

QIUSUO Multi-parameter Water Quality Meter Water Quality Monitoring with Conductivity Standard Solutions Range -2.000 to 20.000 pH for Measuring pH ORP Conductivity TDS Aalinity Resistivity Dissolved Oxygen

QIUSO Multiparameter Water Quality Meter Portable Multi Parameter Water Quality Analyzer with Calibration Fluid Resolution 0.001/0.01/0.1 pH Selectable ORP Range -1999.9 to 1999.9 mV Auto-Power Off

QIUSUO Multi Parameter Water Quality Meter with Range -2.000 to 20.000 pH Resolution 0.001 0.01 0.1 pH Selectable Calibration Fluid Automatic Temperature Compensation Auto-read Function