Portable pH/ORP Meter PH-221

Portable pH/ORP Meter PH-221

Professional portable pH meter with relative and absolute millivolts measurement modes. The meter supports 5 points calibration, system menu contains 9 optional parameters. Accuracy: 0.002pH.

pH Mode:

  1. Professional portable pH meter is equipped with a large backlit LCD display.
  2. 1 to 5 points push-button calibration with auto-buffer recognition.
  3. Selectable pH buffer standard (USA/NIST/DIN) or using the custom calibration solutions.
  4. Automatic electrode slope display helps user decide whether to replace sensor.
  5. Automatic Temperature Compensation provides accurate reading over the entire pH range.
  6. Calibration Due Reminder prompts you to calibrate the meter regularly.


ORP Mode:

  1. Single point offset calibration allows adjusting the displayed value to a known standard.
  2. Relative and absolute millivolts measurement modes provide accurate ORP readings.


Other Features:

  1. Stability indicator automatically shows current measurement status.
  2. Auto-Hold function freezes stable measured value for easy viewing and recording.
  3. Manual temperature calibration improves the measurement accuracy of meter.
  4. Selectable temperature unit (°C or °F) meets different application requirements.
  5. Automatic electrode diagnosis shows zero point offset and slope of the pH electrode.