VTSYIQI Portable Paper Moisture Meter Handheld Paper Moisture Tester with Measuring Range 0.00-2.00%(d) 0.0-98.0%(s) Accuracy: ± 0.5(Main Moisture Range) Digits LCD with Backlight For Measure Different Kinds of Papers

VTSYIQI Portable pH and Temperature Meter Analyzer with Calibration Liquids Range -2.00 to 20.00 pH Calibration 1 to 3 points Accuracy ±0.01 pH Range -1999 to 1999 mV Accuracy ±1 mV USB Communication Interface Automatic Temperature Compensation

VTSYIQI Portable pH Conductivity Dissolved Oxygen Meter With Standard Calibration Fluids Accuracy ±0.002 pH For Measuring pH Oxidation Reduction Potential Ion Concentration Conductivity Salinity Resistivity and Dissolved Oxygen

VTSYIQI Portable pH Meter Analyzer Tester with Standard Calibration Solution pH Range -2.00 to 20.00 pH Resolution 0.01 pH Accuracy ±0.01 pH mV Range -1999 to 1999 mV 1 to 3 Points Calibration Automatic Temperature Compensation Expanded

VTSYIQI Portable pH Meter Digital Water pH Analyzer with Calibration Liquids pH Range -2.00 to 20.00 pH mV Range -1999 to 1999 mV Resolution 0.1 (0 to 999.9mV), 1 (1000 to 1999mV) USB Communication Interface

VTSYIQI Portable pH Meter Digital Water pH Analyzer with Standard Calibration Solution Range -1999.9 to 1999.9 mV Stores Up to 500 Data Sets Accuracy ±0.2 mV Setup Menu Contains 9 Options Manual/Auto-read Measurement Endpoint

VTSYIQI Portable pH Meter Handheld Water pH Analyzer Portable pH Gauge Tester with Standard Calibration Solution Range -2.00 to 20.00 pH Accuracy ±0.01 pH Calibration 1 to 3 points Manual/Auto-read Measurement Endpoint USB Communication Interface

VTSYIQI Portable pH Meter Portable pH Gauge Tester with Standard Calibration Solution Range -2.000 to 20.000 pH Resolution 0.001/0.01/0.1 pH Selectable Accuracy ±0.002 pH Range -1999.9 to 1999.9 mV USB Communication Interface

VTSYIQI Portable pH Meter Temperature Meter with Calibration Liquids Range -2.000 to 20.000 pH Range -1999.9 to 1999.9 mV Resolution 0.1/1 mV Selectable Accuracy ±0.2 mV Auto-read Function USB Communication Interface USB Communication Interface

VTSYIQI Portable pH Meters Handheld pH Meter with Standard Calibration Solution Resolution 0.01 pH Calibration 1 to 3 points Range -1999 to 1999 mV USB Communication Interface Manual / Auto-read Measurement Endpoint 

VTSYIQI Portable PH/Conductivity Meter Multi Parameter Water Quality Meter with Conductivity Standard Solutions Accuracy ±0.002 pH Conductivity Range 0 to 20.00,200.0,2000 µS/cm,20.00,200.0 mS/cm for Measuring pH mV Conductivity TDS

VTSYIQI Portable pH/Conductivity/TDS/Salinity Meter Multi Parameter Water Quality Meter with Conductivity Standard Solutions Range -1999.9 to 1999.9 mV for Measuring PH,Oxidation Reduction Potential,Conductivity,TDS,Salinity,Resistivity