pH Bench Meter for pH, oxidation-reduction pH Bench MeterpH Bench MeterpH Bench Meter for potential (ORP) measurement

pH Bench Meter

High Performance Bench Meter for Universal pH Applications

It provides accurate pH and ORP measurement for high-level experiments and research

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Model : ST5000-B

  • 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
  • Electrode ST320 (Available as an accessory )


Model : ST-5000-F

  • 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
  • Electrode ST350 

Backed by OHAUS’ century-old commitment to providing precise measurement, Starter 5000 provides accurate pH and ORP measurements for high-level experiments and research.

Enhanced features, advanced technology, and high performance have been combined to support complex laboratory tasks requiring pH measurement.


  • pH, oxidation-reduction potential (ORP) measurement
  • Display: Backlit liquid crystal display (LCD),touchscreen
  • Operation: AC adapter (included)
  • Communication: RS232 and USB (included). GLP/GMP data output with real-time clock.
  • Construction: ABS housing, standalone electrode holder, replaceable in-use cover
  • Design Features: 3 endpoint modes, continuous measurement mode, up to 9 point calibration, 1,000 measurement memory


Starter 5000's performance is propelled by a 1000-item library, 10 sensors for calibration storage, 8 predefined and 1 self-defined buffer group, 3 endpoint modes, and GLP mode.


The color touchscreen operates similarly to smartphones and tablet computers and provides simple operation of the advanced features, such as one-touch toggling of measurement modes.


With a standalone electrode holder, USB port, IP54 housing, and in-use cover, Starter 5000 provides flexibility and protection that ensures smooth and enduring operation.

Measurement Range-2.000 – 20.000 pH
-2000.00 – +2000.00 mV
-30°C – 130 °C
0.1 °C
Error Limits/Accuracy± 0.002 pH
± 1 mV
± 0.1 °C
Buffer Group8 predefined groups, 1 self define group
pH Calibration1-9 points
Memory1000 sets, with 10*10 calibration data
Power Supply110-240V/50-60Hz, 9 V DC
Size/Weight220 W × 175 D× 78 H mm / 0.55 kg
DisplayColor Touch-Screen LCD
InputBNC, impedance >3*10e+12 Ω Cinch, NTC 30 kΩ
OutputUSB & RS232
Temperature CompensationATC and MTC
ElectrodeST320(Available as an accessory with ST5000-B)
ST350(included with ST5000-F)