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Ohaus AB33PH-F Benchtop pH, ORP, and Temperature Meter

UsedOhausMetersUnited States

From€662.16excl. VAT

In stock

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Measurement Range
-5 °C – 110 °C; -2.00 – 16.00 pH; -2000.00 – +2000.00 mV
Measurement Resolution
0.1 °C; 0.01 pH; 1 mV
Accuracy
±0.5 °C; ±1 mV; ±0.01 pH
Display
LCD with backlight & one-line dot matrix
Electrode
ST310 (Included)
All 15 specifications
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Specifications 15

Brands
Ohaus
New/Used
Used
Measurement Range
-5 °C – 110 °C; -2.00 – 16.00 pH; -2000.00 – +2000.00 mV
Measurement Resolution
0.1 °C; 0.01 pH; 1 mV
Accuracy
±0.5 °C; ±1 mV; ±0.01 pH
Display
LCD with backlight & one-line dot matrix
Electrode
ST310 (Included)
Accuracy ± (mV)
1 mV
Accuracy ± (Temperature)
0.5 °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 (±)
0.01
Power
AC Adapter (Included)
Working Environment
5°C – 40°C, 80% RH, Non-condensing

Product description

Bench meter with pH, ORP, temperature measurement; LCD display; USB/RS232 communication; calibration alarm.

  • Measurement ranges: pH -2.00 to 16.00; ORP -2000 to +2000 mV; Temperature -5 °C to 110 °C
  • Measurement resolution: 0.01 pH; 1 mV; 0.1 °C
  • Accuracy: ±0.01 pH; ±1 mV; ±0.5 °C
  • Display: 6.5" segment and dot matrix LCD with backlight
  • Operation: Capacitive touch keypad; ABS housing; standalone electrode holder
  • Communication interfaces: RS232 and USB device (included)
  • Power: AC adapter included
  • Features: i-Steward technology for measurement consistency, calibration due alarm, 1000-measurement memory
  • Electrode: ST310 included
  • Dimensions: 210 mm x 51 mm x 142 mm (LxHxW)
  • Weight: 0.5 kg (1.1 lb)
  • Environment: Operating temperature 5°C to 40°C; 80% RH, non-condensing

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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 31 October 2026