Dissolved Oxygen Probe

Product image for Dissolved Oxygen Probe

Use the Dissolved Oxygen Probe to determine the concentration of oxygen in aqueous solutions in the field or in the laboratory.


The Dissolved Oxygen Probe is great for biology, chemistry, ecology, or integrated science courses. It can be used to perform a wide variety of experiments to determine changes in dissolved oxygen levels, one of the primary indicators of the quality of an aquatic environment.
  • Built-in temperature compensation lets you calibrate in the lab, then make measurements outdoors without having to recalibrate.
  • Disposable caps with pre-fit membranes allow you to quickly and conveniently change membranes.
  • Calibrate in the units you choose: % dissolved oxygen, mg/L, or ppm dissolved oxygen



  • Range: 0 to 15 mg/L (or ppm)
  • Accuracy: ±0.2 mg/L
  • Response Time: 95% of final reading in 30 seconds, 98% in 45 seconds
  • Resolution: 0.014 mg/L (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro)
  • Temperature Compensation: automatic from 5–35°C
  • Pressure Compensation: manual
  • Salinity Compensation: manual
  • Minimum sample flow: 20 cm/second

Download the User Manual for Full Specifications

Experiments and Lab Ideas

Select a lab book to see a list of experiments and more information.

Lab Ideas and Innovative Uses

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What’s Included

  • Vernier Dissolved Oxygen Probe (dissolved oxygen electrode with membrane cap)
  • One replacement membrane cap
  • Sodium Sulfite Calibration Standard (2.0 M Na2SO3) and MSDS sheet
  • D.O. Electrode Filling Solution, MSDS sheet, and filling pipet
  • Calibration bottle (empty, lid with hole)
  • D.O. Polishing Strips (1 pkg)
  • User Manual

Sensor Requirements

The Dissolved Oxygen Probe requires a compatible interface and software to collect data. Interface and software sold separately. Getting started with probeware »

Compatible Interfaces

The Dissolved Oxygen Probe is compatible with these interfaces:

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Dissolved Oxygen ProbeDO-BTA$209
Optional Accessories
DO Calibration SolutionDO-CAL$4
DO Filling Solution, 125 mLFS$6
DO Polishing StripsPS$4
Electrode SupportESUP$10
Membrane for DO SensorMEM$13
Primary Productivity KitPPK$44
Water Depth SamplerWDS$79

Related Products

Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

Order Code DO-BTA
U.S. Educator Price $209

Sample Data

Saturated Dissolved Oxygen vs. Temperature Data
Saturated Dissolved Oxygen vs. Temperature Data
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