QIUSUO Portable Multi Parameter Water Quality Meter Tester with Calibration Solutions for Measuring pH ORP Ion Concentration Conductivity TDS Salinity Resistivity Dissolved Oxygen Range -2.000 to 20.000 pH Accuracy ±0.002 pH

QIUSUO Portable Na Ion Meter Na Ion Meter with Calibration Fluid Range 0.002 to 69000 ppm and Range -1999.9 to 1999.9 mV Resolution 0.001 0.01 0.1 1 automatic Setup Menu Allows Setting the Number of Calibration Points

QIUSUO Portable NH3 Ion Meter Ammonia Ion Concentration Tester with Calibration Fluid Range 0.01 to 17000 ppm and Range -1999.9 to 1999.9 mV Accuracy ±1% F.S. Measurement Units ppm mg/L mol/L mmol/L for Testing NH3 Ion

QIUSUO Portable NH4 Ion Meter Ammonium Ion Meters Ammonium Ion Concentration Meter with Standard Calibration Fluid Range 0.1 to 18000 ppm Accuracy ±1% F.S. USB Communication Interface for Testing NH3 Ion

QIUSUO Portable Nitrate Ion Meter NO3 Ion Meter with Calibration Fluid Range 0.4 to 62000 ppm Resolution 0.001 0.01 0.1 1 Automatic Range -1999.9 to 1999.9 mV USB Communication Interface Stores Up to 500 Data Sets

QIUSUO Portable NO2 Gas Detector Hydrogen Cyanide Monitoring Machine with Measuring Range 0 to 20ppm Resolution Ratio 0.1ppm L-Alarm 5ppm H-Alarm 10ppm

QIUSUO Portable NO2 Gas Detector Nitrogen Dioxide Gas Detectors with Measuring Range 0 to 20ppm Resolution 0.1ppm Vibration Indicator Alarm LCD Display for Continuous Monitoring of Measurable Gases

QIUSUO Portable NO3 Ion Meter Lab NO3 Ion Meter with Calibration Fluid Accuracy ±0.5% F.S. Range 0.4 to 62000 ppm Setup Menu Allows Setting the Number of Calibration Points Manual/Auto-Read Measurement Endpoint for Testing Nitrate Ion

QIUSUO Portable Paper Moisture Content Meter Paper Moisture Analyzers with Accuracy ± 0.5(Main Moisture Range) Resolution 0.1 or 0.01 Measuring Range 0.00-2.00%(d) 0.0-98.0%(s) Digits LCD with Backlight for Corrugated Paper,Cartons,Paper Rolls,Etc

QIUSUO Portable Paper Moisture Meter Handheld Paper Moisture Analyzer with Digital Display with Back Light Measuring Range 0.00-2.00%(d) 0.0-98.0%(s) Accuracy ± 0.5(Main Moisture Range) Resolution 0.1 or 0.01 for Measure Different Kinds of Papers

QIUSUO 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

QIUSUO Portable Pb Ion Meter Lead Ion Meters with Calibration Fluid Range 0.2 to 20800 ppm Resolution 0.001 0.01 0.1 1 Automatic 2 to 5 Points Calibration Accuracy ±1% F.S. USB Communication Interface for Testing Lead Ion

QIUSUO 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

QIUSUO 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

QIUSUO 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 Memory Stores up to 100 data set