• Dissolved Oxygen Benchtop Meter

Dissolved Oxygen Benchtop Meter

  • DO reading in mg/L or % saturation and temperature
  • Automatic temperature compensation
  • Manual salinity input and barometric pressure compensation

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Take simple, routine dissolved oxygen and temperature measurements with the Thermo Scientific Orion Star A113 Dissolved Oxygen Benchtop Meter

An easy-to-use and budget-friendly instrument for basic dissolved oxygen analysis in the lab. Calibrate polarographic DO probes using water-saturated air or custom value using Winkler titration. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. Use the included electrode stand to easily place sensors in samples and simplify storage.

Features and Benefits

  • Automatic temperature, manual salinity input and manual barometric pressure compensation for an accurate result
  • Two calibration options to meet your requirements: water-saturated air method or a Winkler titration
  • Non-volatile memory holds up to 50 data points
  • IP54-rated housing handles splashes and can be wall-mounted if table space is unavailable
  • Accepts Thermo Scientific Orion polarographic dissolved oxygen probes
  • Three-year meter replacement warranty

Multiple Power Options

  • Universal power adapter that works with almost every AC power source
  • Alternative power source of four AA batteries (sold separately)

Easy to Read Backlit Display

  • Large, informative screen clearly shows the main information, including DO reading in mg/L or % saturation, temperature, meter mode and power source
  • Thermo Scientific AUTO-READ locks in the stable reading on your screen and ready indicator alerts when readings are stable, so you don't miss a reading.
  • Simple button layout and onscreen messages help with calibration and setup menu choices
  • Icons provide quick updates on battery life and completed calibration status
Dissolved Oxygen
Range0 to 20 mg/L
Resolution0.01, 0.1
Relative Accuracy±0.2
% Saturation
Range0 to 200
Resolution0.1, 1
Relative Accuracy±2 %
Manual Barometric Pressure Correction450.0 to 850.0 mm Hg
Manual Salinity Factor Correction0 to 45
Calibration FeaturesWater-saturated air, manual (Winkler)
Sensor TypePolarographic
Range0 to 50 °C, 32 to 122 ºF
Relative Accuracy±0.1
Temperature Offset CalibrationYes
Number of Points50
Log FunctionManual, Automatic with AUTO-READ™
Log EditDelete last reading or all
DO with Temperature Probe9-pin mini-DIN
AC AdapterOptional– universal, 100-240 VAC
Battery PowerIncluded– 4 AAs
Battery Life2000 hrs