VTSYIQI Multi Parameter Water Quality Meter Analyzer Tester with Conductivity Standard Solutions Range -2.000 to 20.000 pH Accuracy ±0.002 pH Resolution 0.001/0.01/0.1 pH Selectable USB Communication Interface for Measuring pH mV ORP Dissolved Oxygen Temp

VTSYIQI Multi Parameter Water Quality Meter Analyzer Tester with Conductivity Standard Solutions Resolution 0.001/0.01/0.1pH Selectable Accuracy ±0.2 mV Auto-Read Function Stores Up to 500 Data Sets for Measuring pH ORP DO Temp

VTSYIQI Multi Parameter Water Quality Meter Analyzer with Conductivity Standard Solutions Range -2.000 to 20.000 pH 1 to 5 Points Calibration Range -1999.9 to 1999.9 mV USB Communication Interface for Measuring pH mV Conductivity TDS Temp

VTSYIQI Multi Parameter Water Quality Meter Analyzer with Range -2.000 to 20.000 pH Resolution 0.001 0.01 0.1 pH Selectable Calibration Fluid for Measuring pH ORP Ion Concentration Conductivity TDS Salinity Resistivity Dissolved Oxygen

VTSYIQI Multi Parameter Water Quality Meter Lab Multiparameter Water Quality Analyzer with Conductivity Standard Solutions Range -2.000 to 20.000 pH Range -1999.9 to 1999.9 mV USB Communication Interface for pH mV ORP Conductivity TDS Salinity Resistivity

VTSYIQI Multi Parameter Water Quality Meter Lab Multiparameter Water Quality Meter with Conductivity Standard Solutions Accuracy ±0.002 pH Stores Up to 500 Data Sets USB Communication Interface for Measuring pH mV Conductivity TDS

VTSYIQI Multi Parameter Water Quality Meter Lab Water Quality Meter with Conductivity Standard Solutions Conductivity Range 0 to 20.00,200.0,2000 µS/cm,20.00,200.0 mS/cm for Measuring pH mV Conductivity TDS

VTSYIQI Multi Parameter Water Quality Meter Portable Multiparameter Water Quality Analyzer with Conductivity Standard Solutions Conductivity Resolution 0.001,0.01,0.1,1,Automatic for Measuring Conductivity TDS Salinity Resistivity DO Temp

VTSYIQI Multi Parameter Water Quality Meter Portable PH/Conductivity Meter With Calibration Fluid Resolution 0.001 0.01 0.1 pH Selectable 1 to 5 Points Calibration  Automatic Temperature Compensation for Measuring pH mV Conductivity TDS Temp

VTSYIQI Multi Parameter Water Quality Meter Portable Water Quality Monitor with Conductivity Standard Solutions Accuracy ±0.002 pH Resistivity Range 0.00 to 20.00 MΩ USB Communication Interface for Measuring pH,ORP,Conductivity,TDS,Salinity Resistivity

VTSYIQI Multi Parameter Water Quality Meter Portable Water Quality Tester with Conductivity Standard Solutions TDS Range 0 to 10.00 100.0 1000 ppm 10.00 200.0 ppt Resistivity Rangen0.00 to 20.00 MΩ USB Communication Interface

VTSYIQI Multi Parameter Water Quality Meter Tester Analyzer with Conductivity Standard Solutions Range -2.000 to 20.000 pH Accuracy ±0.002 pH Stores Up to 500 Data Sets Automatic Temperature Compensation for Measuring pH mV Conductivity TDS