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Ohaus ST5000-B Benchtop pH and ORP Meter with Touchscreen

UsedOhausMetersUnited States

From€1,650.68excl. VAT

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Measurement Range
-2.00 – 20.00 pH; -2000.00 – +2000.00 mV; -30 – 130°C
Accuracy
± 0.03% mV; ± 0.002 pH; ± 0.1 °C
Measurement Resolution
0.001 pH; 0.01 mV; 0.1 °C
ATC
Yes
Electrode
ST320 (Available as an accessory)
All 24 specifications
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Specifications 24

Brands
Ohaus
New/Used
Used
Measurement Range
-2.00 – 20.00 pH; -2000.00 – +2000.00 mV; -30 – 130°C
Accuracy
± 0.03% mV; ± 0.002 pH; ± 0.1 °C
Measurement Resolution
0.001 pH; 0.01 mV; 0.1 °C
ATC
Yes
Electrode
ST320 (Available as an accessory)
Accuracy ± (mV)
0.03 mV
Accuracy ± (Temperature)
0.1 °C
Calibration
9 Point
In-use cover
Included
Measurement Range (Temperature)
-30 °C – 130 °C
Meter Type
pH; ORP
Net Weight
19.5 oz (550 g)
pH accuracy (±)
0.002
pH measuring range
-2 – 20
pH resolution
0.001
Power
AC Adapter (Included)
Protection Rating
IP54
Temperature Compensation
Automatic
Temperature Display
Yes
Temperature Resolution
0.1 °C
Temperature Sensor
30 KΩ NTC
Working Environment
50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85%RH, non-condensing)

Product description

High-precision benchtop pH/ORP meter with 9-point calibration, touchscreen display, and IP54 protection.

Ohaus pH Bench Meter ST5000-B Model #30129895

  • Measurement Range:
  • pH: -2.00 to 20.00
  • ORP: -2000.00 to +2000.00 mV
  • Temperature: -30 to 130 °C
  • Accuracy:
  • ±0.002 pH
  • ±0.03% mV
  • ±0.1 °C
  • Resolution:
  • 0.001 pH
  • 0.01 mV
  • 0.1 °C
  • Calibration: 9-point
  • Temperature Compensation: Automatic with 30 KΩ NTC sensor
  • Features:
  • Large LCD touchscreen interface for intuitive navigation
  • 1,000 measurement memory
  • Eight predefined buffer groups
  • Three endpoint modes
  • Standalone electrode arm (accessory ST320)
  • IP54 rated housing and included in-use cover for protection
  • Power: AC adapter included
  • Operating Environment: 10°C to 40°C (50°F to 104°F), 85% relative humidity, non-condensing
  • Net Weight: 550 g (19.5 oz)

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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