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 Setup Menu Contains 9 Options 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 Manual / Auto-read Measurement Endpoint USB Communication Interface

QIUSUO Portable pH Meter Portable pH Gauge Tester with Standard Calibration Solution Range -2.000 to 20.000 pH Resolution 0.001/0.01/0.1 pH Selectable Accuracy ±0.002 pH Range -1999.9 to 1999.9 mV 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 Communication Interface USB Communication 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 USB Communication Interface 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 Sets Setup Menu Contains 9 Options Manual/Auto-read Measurement Endpoint

QIUSUO Portable Potassium Ion Meter Potassium Ion Concentration Tester with Calibration Liquids Range -1999.9 to 1999.9 mV Accuracy ±1% F.S. Calibration Solutions 0.001 0.01 0.1 1 10 100 1000 10000 for Testing K Ion

QIUSUO Portable Silver Ion Meter Ag Ion Meter with Calibration Fluid Accuracy ±1% F.S. Range 0.01 to 107900 ppm Range -1999.9 to 1999.9 mV Calibration Solutions 0.001/0.01/0.1/1/10/100/1000/10000 Measurement Units ppm mg/L mol/L mmol/L

QIUSUO Portable Single Axis Fluxgate Magnetometer Handheld Uniaxial Fluxgate Magnetometer with μT mG Unit Switch 5-Digits Display Single-axis Fluxgate Sensor Single-axis Fluxgate Sensor Measuring Range 0~2000μT Accuracy 1%

QIUSUO Portable Sodium Ion Meter Na Concentration Tester with Range 0.002 to 69000 ppm Calibration Fluid Accuracy ±0.5% F.S Manual/Auto-Read Measurement Endpoint Automatic Temperature Compensation Function for Testing Na Ion

QIUSUO Portable Sonic Belt Tension Tester Belt Tensiometer for Most Belt Types with Tension Range 0.01-99900N Frequency Range 10Hz-5000Hz 500 Groups Storage Data LCD Screen Display with Backlit Automatic Sensitivity Calibration

QIUSUO Portable Sonic Tension Meter Belt Tension Meter Gauge with LCD Screen Display with Backlit 500 Groups Storage Data Automatic Sensitivity Calibrationfor V-Belt Fabric Covered Belt Toothed Edge Belt Multi-vinged Belt Power Transmission Belt Etc

QIUSUO Portable Sonic Tension Meter Digital Belt Tension Gauge for V-Belt Fabric Covered Belt Toothed Edge Belt Multi-vinged Belt Power Transmission Belt Etc with Tension Range 0.01-99900N LCD Screen Display with Backlit Frequency Range 10Hz-5000Hz

QIUSUO Portable Sound Level Meter Noise & Sound Level Meters with Frequency Range10 Hz~20 kHz Measurement Range 25dB(A)~140dB(A) Sampling Frequency 48kHz Integrating Time 1s~24h 8000 Groups Data Storage

QIUSUO Portable Spectrocolorimeter Single Caliber Spectrocolorimeter with Single Aperture Φ8mm Integrating Sphere Size Φ40mm Ergonomic Design Easy Measurement Wavelength Range 400-700nm for Color Difference Quality Control