GAOTek Portable High Accuracy pH Meter

This Portable High Accuracy pH Meter has temperature range of 23 °F to 221 °F, pH range of -2.00 pH to 20.0 pH and 1.5 V AA batteries.




  • Professional portable pH meter is equipped with LCD display
  • 1 point to 5 points calibration with automatic recognition for buffers
  • Automatic electrode diagnosis shows the pH slope and offset
  • Automatic temperature compensation ensures accurate readings
  • Calibration due alarm prompts user to meter regularly
  • 1 point offset calibration allows adjusting the displayed value
  • Relative and absolute millivolt ensure the reliable ORP measurements
  • Auto-Read function senses and locks the measurement endpoint
  • Auto-Power Off effectively conserves battery life
  • Setup menu allows setting pH buffer group, number of calibration points, etc
  • Reset function automatically resumes all settings back to the factory defaults
  • Expanded memory stores or recalls up to 500 data sets
  • USB communication interface is easy to transfer data to PC
  • Multi-mode power scheme ensures that using the meter smoothly


Technical Specification

Range -2.000 pH to 20.000 pH
Resolution 0.001 pH, 0.01 pH, 0.1 pH, selectable
Accuracy ±0.002 pH
Calibration Points 1 to 5 points
pH Buffer Options USA, NIST, DIN, 2 custom buffers
Range ±1999.9 mV
Resolution 0.1 mV, 1 mV, selectable
Accuracy ±0.2 mV
Calibration Points 1 point
Measurement Modes Relative or absolute mV
Range 32 °F to 221 °F (0 °C to 105 °C)
Resolution 0.1 °F (0.1 °C)
Accuracy ±0.9 °F (±0.5 °C)
Offset Calibration 1 point
Calibration Range Reading 50 °F (±10 °C)
General Specifications
Temperature Compensation 32 °F to 212 °F (0 °C to 100 °C), manual or automatic
Stability Criteria Low or high
Calibration Due Alarm 1 day to 31 days or off
Auto-Power Off 10 minutes, 20 minutes or 30 minutes after last key pressed
Memory Stores up to 500 data sets
Output USB communication interface
Connector BNC, 0.13 in (3.5 mm) jack socket
Display Custom LCD 3.14 in x 2.36 in (80 mm × 60 mm)
Power 3 × 1.5 V AA batteries or DC 5 V power adapter
Battery Life Approximately 150 hours (turn off the backlight)
Dimensions 6.69 in x 3.34 in x 1.18 in (170 mm × 85 mm × 30 mm)
Weight 0.66 lb (300 g)


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