VTSYIQI Benchtop PH Meter for Acidity with PH Buffer Powder mV Measuring Range -2000~2000mV Resolutin 0.01mV pH Measuring Range -2.00～20.000pH Resolutin 0.001pH Automatic/Manual Temperature Compensation 5 Points Calibration 500 Sets Data Storage

VTSYIQI Benchtop pH Meter Labrorary pH Meter with ORP Range -1999.9 to 1999.9 mV Resolution 0.1/1 mV Selectable Accuracy ±0.2 mV pH Range -2.000 to 20.000 pH Auto-read Function USB Communication Interface TP-10K Temperature Probe

VTSYIQI Digital Benchtop pH Meter Lab pH Analyzer with ORP Range -1999.9 to 1999.9 mV Resolution 0.1 / 1 mV Selectable Calibration 1 point pH Range -2.000 to 20.000 pH Resolution 0.001 / 0.01 / 0.1 pH, selectable USB Communication Interface

VTSYIQI Labrorary pH Meter Digital Benchtop pH Analyzer with ORP Range -1999.9 to 1999.9 mV Accuracy ±0.2 mV Auto-read Function Expanded Memory Stores USB Communication Interface

VTSYIQI Benchtop pH Meter Digital pH Meters with pH Range -2.000 to 20.000 pH Accuracy ±0.002 pH ORP Range -1999.9 to 1999.9 mV Accuracy ±0.2 mV Calibration 1 point USB Communication Interface Auto-read Function

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 Digital pH Meter Portable Water pH Analyzer with Calibration Liquids Range -2.000 to 20.000 pH Range -1999.9 to 1999.9 mV Accuracy ±0.2 mV USB Communication Interface Stores Up to 500 Data Sets Manual/Auto-read Measurement Endpoint