VTSYIQI Benchtop Multiparameter Water Quality Meter Multiparameter Water Quality Analyzer with Range -2.000 to 20.000 pH Accuracy ±0.002 pH Conductivity Standard Solutions USB Communication Interface for Measuring pH mV ORP Dissolved Oxygen

VTSYIQI Benchtop Multiparameter Water Quality Meter Portable Multi Parameter Water Quality Meter with Conductivity Standard Solutions Ion Concentration Range 0.00 to 19999 for Measuring pH mV ORP Ion Concentration Conductivity TDS Salinity Resistivity DO

VTSYIQI Benchtop NH3 Ion Concentration Mete Ammonia Ion Meter with Range ±1999.9 mV Accuracy ±1% F.S. Calibration Fluid Range 0.01 to 17000 ppm Backlit LCD Display 2 to 5 Point Calibration 500 Sets of Data Storage

VTSYIQI Benchtop NH4 Ion Meter with Range 0.1 to 18000 ppm Accuracy±0.5% F.S.Calibration Fluid USB Communication Interface Auto-Read Function Measurement Units ppm mg/L mol/L mmol/L 2 to 5 Points

VTSYIQI Benchtop Nitrate Ion Meter Lab NO3 Ion Meter with Accuracy±0.5% Range 0.4 to 62000 ppm F.S. 2 to 5 Points Calibration Data Strong 2 to 5 Point Calibration Optional 8 Concentration Calibration Points Calibration Fluid

VTSYIQI Benchtop PH Meter Benchtop Acid Meter with PH Buffer Powder 2 Points Calibration mV Measuring Range -1599～1599mV pH Measuring Range 0.00～14.00 Manual Temperature Compensation for Measure The pH Value of Sample Solution

VTSYIQI Benchtop pH Meter Benchtop PH Tester with 2 Points Calibration PH Buffer Powder pH Range 0.00～14.00pH Resolutin 0.01pH mV Measuring Range -1599～1599mV Resolutin 1mV Balanced/Continuous Measurement Mode 4-inch LCD Display

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 Benchtop pH Meter Digital pH Meters with Range -1.00 to 15.00 pH Resolution 0.01 pH Accuracy ±0.01 pH Range -1999 to 1999 mV Resolution 1 mV Accuracy ±1 mV Manual/Auto-read Measurement Endpoint 1 to 3 Points Calibration

VTSYIQI Benchtop PH Meter for Acidity with 50 Sets Data Storage mV Measuring Range -1999～1999mV pH Measuring Range -2.00～18.00pH Movable Bracket PH Buffer Powder 6-inch LCD Display Auto-Shut Off Function 3 Points Calibration

VTSYIQI Benchtop PH Meter for Acidity with PH Buffer Powder 3 Points Calibration mV Measuring Range -1999～1999mV pH Measuring Range -2.00～18.00pH Automatic/Manual Temperature Compensation Auto-Shut Off Function 50 Sets Data Storage

VTSYIQI Benchtop PH Meter for Acidity with PH Buffer Powder mV Measuring Range -1599～1599mV Resolutin 1mV Indication Error ±1%FS pH Range 0.00～14.00pH Resolutin 0.01pH Indication Error ±0.05pH Manual Temperature Compensation