A113 Dissolved Oxygen Benchtop Meter

  • Warranty This product comes complete with a three year warranty
  • Multiple Power Options Powered either by AA batteries or universal power adapter
Product Options


If you require a easy to use yet reliable Dissolved Oxygen Meter the Thermo Scientific™ Orion Star™ A113 Dissolved Oxygen Meter may be the perfect option for you. It features two calibration options - water saturated air method or a Winkler titration depending on your requirements and Automatic temperature, manual salinity input and manual barometric pressure compensation for ensured accuracy. The A113 accepts Thermo Scientific™ Orion™ polarographic dissolved oxygen probes. All information is displayed on the large screen, this shows DO reading in mg/L or % saturation.

The other features which make the A113 Dissolved Oxygen Meter the ideal choice are:

  • IP54 rated housing protects against splashes
  • Has mounting options - wall or bench
  • A non volatile memory which holds up to 50 data points
  • Covered by a three year warranty
  • Multiple power options - universal power adapter or four AA batteries

Manufactured by: Thermo Scientific
Model: A113 Dissolved Oxygen Benchtop Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Accuracy (Polarographic DO) ±0.2 mg/L; ±2 % saturation
Battery Life 2000 hours
Battery Type Four AA (sold separately)
Data Points 50
Description Orion Star A113 Dissolved Oxygen/Temperature Benchtop Meter
Display Type LCD
Hertz 50/60Hz
Inputs 9–pin Mini-DIN (polarographic DO with temperature probe)
Outputs None
Range (Polarographic DO) 0 to 20 mg/L; 0 to 200 % saturation
Range (RDO) 0.01, 0.1%
Relative Humidity Range 5 to 85 %, non-condensing
Resolution (Polarographic DO) 0.01, 0.1 mg/L; 0.1, 1 % saturation
Salinity Factor 0 to 45ppt
Saturation Range (Polarographic DO) 0 to 200% Saturation
Sensor Types Polarographic DO probe – purchase separately
Accuracy (Temperature) ±0.1°C
Range (Temperature) –5 to +105°C
Resolution (Temperature) 0.1°C
Voltage 90 to 260VAC
Warranty 3 year meter replacement
Calibration Modes Water-saturated air, manual (Winkler)
Certifications/Compliance IP–54
Percent Saturation Relative Accuracy (Polarographic DO) ±2% Saturation
Percent Saturation Range (Polarographic DO) 0 to 200% Saturation
Saturation Range 0 to 200% Saturation
Saturation Resolution 0.1, 1% Saturation