ORP Meters

Bante221 Portable ORP Meter

Professional portable ORP meter, 1 point calibration, setup menu contains 9 options, accuracy: 0.2 mV.

ORP Mode:
• Professional portable ORP meter is equipped with a backlit LCD display.
• 1 point offset calibration allows adjusting the displayed value to a known standard.
• Relative and absolute millivolt modes ensure the reliable ORP measurements.

Portable ORP Meter

pH Mode:
• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.
• Automatic electrode diagnosis shows the pH slope and zero offset.
• Automatic temperature compensation ensures accurate readings over the entire range.
• Calibration due alarm reminds the user to calibrate the meter regularly.

Portable ORP Meter

Other Features:
• Auto-read function senses and locks the measurement endpoint.
• Auto-power off effectively conserves battery life.
• Setup menu allows setting the number of calibration points, resolution, stability criteria, date
  and time, 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 for data transfer or connecting a power adapter to the meter.





-1999.9 to 1999.9 mV


0.1 / 1 mV, selectable


±0.2 mV


1 point

   Measurement Modes

Relative / Absolute mV



-2.000 to 20.000 pH


0.001 / 0.01 / 0.1 pH, selectable


±0.002 pH


1 to 5 points

   pH Buffer Options

USA / NIST / DIN / 2 custom buffers



0 to 105°C / 32 to 221°F




±0.5°C / ±0.9°F


1 point

   Calibration Range

Reading ±10°C/°F

   Other Specifications

   Temperature Compensation

0 to 100°C / 32 to 212°F, manual or automatic

   Hold Function

Manual / Auto-read measurement endpoint

   Stability Criteria

Low / High

   Calibration Due Alarm

1 to 31 days or off

   Auto-Power Off

10 / 20 / 30 minutes after last key pressed


Stores up to 500 data sets


USB communication interface


BNC, 3.5 mm jack socket


Custom LCD (80 × 60 mm)

   Power Supply

3 × 1.5V AA batteries or 5V DC power adapter

   Battery Life

Approximately 150 hours without backlight

   Environmental Conditions

0 to 50°C / 32 to 122°F, relative humidity < 80%


170 × 85 × 30 mm


300 g

   Ordering Code

Meter Includes


E201-BNC pH electrode

E501-BNC ORP electrode

TP-10K temperature probe

pH 4.01, 7.00, 10.01 buffer solutions

Electrode clip

Carrying case

Items Description
E201-BNC pH Electrode For measuring the liquids
E202-BNC pH Electrode For measuring the semisolid and gel samples
501 ORP Electrode For measuring samples with weak redox potential
502 ORP Electrode For measuring samples with strong redox potential
504 ORP Electrode For measuring the high temperature samples
USB Cable For transferring data or connecting power adapter
5V DC Power Adapter For connecting external power source

   Ordering Code

Dimensions  and Weights


35 × 10 × 30 cm, 1.5 kg