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Ohaus AB41PH-B Bench pH, ORP, and Temperature Meter

UsedOhausMetersUnited States

From€2,109.46excl. VAT

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Measurement Range
-2.000 – 20.000 pH; -10.0 °C – 125.0 °C; -2000.00 – +2000.00 mV
Measurement Resolution
0.1 mV; 0.1 °C; 0.001 pH
Accuracy
±0.3 mV; ± 0.002 pH; ±0.3 °C
Display
LCD with backlight & one-line dot matrix
Electrode
Not included
All 16 specifications
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Specifications 16

Brands
Ohaus
New/Used
Used
Measurement Range
-2.000 – 20.000 pH; -10.0 °C – 125.0 °C; -2000.00 – +2000.00 mV
Measurement Resolution
0.1 mV; 0.1 °C; 0.001 pH
Accuracy
±0.3 mV; ± 0.002 pH; ±0.3 °C
Display
LCD with backlight & one-line dot matrix
Electrode
Not included
Accuracy ± (mV)
0.3 mV
Accuracy ± (Temperature)
0.3 °C
Dimensions
8.3 in x 2 in x 5.6 in (210 mm x 51 mm x 142 mm) (LxHxW)
Net Weight
1.1 lb (0.5 kg)
Parameter
pH/mV/ORP
pH accuracy (±)
0.002
Power
AC Adapter (Included)
Temperature Sensor
No
Working Environment
5°C – 40°C, 80% RH, Non-condensing

Product description

Bench meter for precise pH, ORP, and temperature measurement with touch interface and data output.

The Ohaus AB41PH-B is a benchtop meter designed to measure *pH*, *oxidation-reduction potential (ORP)*, and *temperature* with high accuracy. It features the i-Steward system for consistent measurement accuracy and a 6.5" segment & dot matrix LCD with backlight for clear data visualization. Operation is simplified via a capacitive touch keypad and the meter includes a standalone electrode holder.

Key features include:

  • Measurement ranges: pH (-2.000 to 20.000), Temperature (-10.0 °C to 125.0 °C), ORP (-2000.00 to +2000.00 mV)
  • Measurement resolution: 0.001 pH, 0.1 °C, 0.1 mV
  • Accuracy: ±0.002 pH, ±0.3 °C, ±0.3 mV
  • Communication ports: RS232, USB Device (included)
  • GLP/GMP compliant data output with real-time clock
  • Memory for 1,000 measurements and the ten most recent calibrations
  • Calibration features: three endpoint modes, calibration due alarm, password management
  • Construction: ABS top housing, AC adapter included
  • Dimensions: 210 mm x 51 mm x 142 mm (LxHxW)
  • Weight: 0.5 kg
  • Working environment: 5°C to 40°C, 80% RH non-condensing
  • Electrode not included

This meter supports rigorous laboratory applications requiring reliable, repeatable pH and ORP readings alongside temperature monitoring.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 3 November 2026