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Ohaus AB41PH-F Benchtop pH/ORP/Temperature Bench Meter

UsedOhausMetersUnited States

From€1,260.83excl. VAT

In stock

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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
Accuracy ± (mV)
0.3 mV
All 14 specifications
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Specifications 14

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
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)
Working Environment
5°C – 40°C, 80% RH, Non-condensing

Product description

Benchtop meter measuring pH, ORP, and temperature with 6.5" LCD, touch keypad, and USB/RS232 output.

The Ohaus AB41PH-F AQUASEARCHER™ bench meter offers reliable, precise measurements of pH, oxidation-reduction potential (ORP), and temperature. Key features include:

  • Measurement Ranges:
  • pH: -2.000 to 20.000
  • Temperature: -10.0 °C to 125.0 °C
  • ORP/mV: -2000.00 to +2000.00 mV
  • Resolution & Accuracy:
  • pH resolution: 0.001; accuracy ±0.002 pH
  • Temperature resolution: 0.1 °C; accuracy ±0.3 °C
  • ORP resolution: 0.1 mV; accuracy ±0.3 mV
  • Display: 6.5" segment and dot matrix LCD with backlight for clear visibility
  • Operation: Capacitive touch keypad, ABS top housing, standalone electrode holder
  • Communication: RS232 and USB Device interfaces; GLP/GMP data output with real-time clock
  • Memory & Calibration: Stores 1,000 measurements, 10 most recent calibrations, with calibration due alarm
  • Construction: Supplied with AC adapter; designed for operation in 5°C–40°C, 80% RH, non-condensing environments
  • Dimensions & Weight: 210 x 51 x 142 mm (LxHxW); 0.5 kg (1.1 lb)
  • Additional Features: i-Steward technology for consistent measurement accuracy, password management, selectable three endpoint calibration modes

This model integrates advanced usability and data management features to support accurate and repeatable laboratory water quality testing.

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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 30 October 2026