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 Nitric Oxide Monitor Digital Nitric Oxide Gas Monitor with Range 0-250ppm Resolution 1ppm Accuracy ≦ 5% F.S L-Alarm 50ppm H-Alarm 150ppm for Combustible and Toxic Gas Leakage Detection Test

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

QIUSUO Portable NO3 Ion Meter Lab NO3 Ion Meter with Calibration Fluid Accuracy ±0.5% F.S. Range 0.4 to 62000 ppm 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

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

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 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 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) Memory Stores up to 100 data set

QIUSUO 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 Manual/Auto-read Measurement Endpoint

QIUSUO Portable pH Meter Handheld Water pH Analyzer Portable pH Gauge Tester with Standard Calibration Solution Range -2.00 to 20.00 pH Accuracy ±0.01 pH Calibration 1 to 3 points USB Communication Interface

QIUSUO Portable pH Meter Temperature Meter with Calibration Liquids Range -2.000 to 20.000 pH Range -1999.9 to 1999.9 mV Resolution 0.1/1 mV Selectable Accuracy ±0.2 mV Auto-read Function USB Interface

QIUSUO Portable pH Meters Handheld pH Meter with Standard Calibration Solution Resolution 0.01 pH Calibration 1 to 3 points Range -1999 to 1999 mV Expanded Memory Stores or Recalls up to 100 Data Sets

QIUSUO Portable pH Meters Portable pH and Temperature Meter with Calibration Liquids Range -2.000 to 20.000 pH Accuracy ±0.2 mV Stores Up to 500 Data Manual/Auto-read Measurement Endpoint