QIUSUO Ca Ion Meter Portable Calcium Ion Meter with Calibration Fluid Range 0.02 to 40100 ppm Accuracy ±1% F.S. Measurement Units ppm mg/L mol/L mmol/L Automatic Temperature Compensation Function for Testing Ca Ion

QIUSUO Bromide Ion Meter Br Ion Concentration Meter with Calibration Fluid 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

QIUSUO Ammonium Ion Meter Portable Ammonium Ion Meter with Calibration Fluid Ion Concentration 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 for Testing NH3 Ion