VTSYIQI Ammonium Ion Concentration Meter Ammonium Ion Meter with Accuracy ±0.5% F.S Ion Concentrationr Range 0.1 to 18000 ppm and ±1999.9 mV 2 to 5 Points Calibration Resolution 0.001 0.01 0.1 1 10 100 1000 10000 Automatic Selectable Ion Measurement Units

VTSYIQI Portable Ammonium Ion Meter NH4 Ion Concentration Tester with Standard Calibration Fluids LCD Display Accuracy ±0.5% F.S. Range from 0.1 to 18000 ppm Resolution 0.001 0.01 0.1 1 Automatic Selectable Ion

VTSYIQI Ammonium Ion Meter Portable Ammonium Ion Meter with Calibration Fluid Ion Concentrationr Range 0.1 to 18000 ppm Range ±1999.9 mV Accuracy ±1% F.S. 2 to 5 Points Calibration Display Resolution 0.001 0.01 0.1 1 Automatic

VTSYIQI NH4 Ion Meter Portable Ammonium Ion Meter with Resolution 0.001 0.01 0.1 1 Automatic Calibration Fluid Range 0.1 to 18000 ppm Accuracy±0.5% F.S. USB Communication Interface 2 to 5 Points Calibration for Testing Ammonium Ion

VTSYIQI Bromide Ion Meter Br Ion Concentration Tester with Range 0.4 to 81000 ppm Accuracy ±0.5% F.S. Standard Calibration Solutions Calibration 2 to 5 Points Resolution 0.001 0.01 0.1 1 Automatic LCD Display Screen for Testing Bromide Ion

VTSYIQI Br Ion Concentration Meter Portable Bromide Ion Meter with Calibration Fluid Range 0.4 to 81000 ppm Range ±1999.9 mV Accuracy ±0.5% F.S. 2 to 5 Points Calibration Data Store Fuction

VTSYIQI Bromide Ion Concentration Meter Ion Meter for Bromide with Accuracy±0.5% F.S. Range 0.4 to 81000 ppm Calibration Fluid  2 to 5 Points Calibration Selectable 8 Concentration Calibration Points Store 500 Data Sets

VTSYIQI Calcium Ion Meter Handheld Ca Ion Concentration Tester with Calibration Fluid Range 0.02 to 40100 ppm Range ±1999.9 mV Accuracy ±1% F.S. USB Communication Interface Store 500 Sets of Data

VTSYIQI Calcium Ion Meters Calcium Ion Concentration Tester with Accuracy±1% F.S. Range 0.02 to 40100 ppm 2 to 5 Points Calibration Data Strong 2 to 5 Point Calibration Optional 8 Concentration Calibration Points Calibration Fluid

VTSYIQI Ca Ion Concentration Meter Portable Calcium Ion Meter with Measurement Units ppm mg/L mol/L mmol/L Calibration Fluid Range 0.02 to 40100 ppm Accuracy ±1% F.S Direct Reading of Ion Concentration Values

VTSYIQI Portable Calcium Ion Meter Lab Ca Ion Concentration Meter with Calibration Fluid Range 0.02 to 40100 ppm Range ±1999.9 mV Accuracy ±1% F.S. 2 to 5 Points Calibration Data Store Fuction

VTSYIQI CL Ion Concentration Meter Portable Chloride Ion Meter with Resolution 0.001 0.01 0.1 1 Calibration Fluid Accuracy ±0.5% F.S. Range from 1 to 35000 ppm ±1999.9 mV Automatic Temperature Compensation Function for Testing Chloride Ion