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Educational Standards

Our products support provincial requirements for NGSS, AP, and more.

Vernier Optical DO Probe

This product is discontinued. Please consider the Go Direct Optical Dissolved Oxygen Probe

The Vernier Optical DO Probe makes it easy to measure the dissolved oxygen concentration in water. Perfect for the field or for the laboratory, this plug-and-play probe requires no calibration, no filling solution, no warm-up time, and no stirring.

SKU: ODO-BTA Categories: ,


Out of stock

The Vernier Optical DO Probe uses luminescent technology to provide fast, easy, and accurate results, making it a terrific choice for biology, ecology, or environmental science courses. Students can measure dissolved oxygen concentration in surface water or 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.

  • Plug-and-play technology–no filling solution, warm-up time, stirring, or calibration necessary
  • Built-in temperature and pressure compensation
  • Easy maintenance
  • Switch setting to measure in units of mg/L or % saturation

The Optical DO Probe cap is warranted to be free from defects for a period of ​two years​ from the date of purchase. With proper use, the lifetime of the cap may be longer than two​ year​s​.

Range: 0 to 20 mg/L (or ppm), 0 to 300%
Accuracy:mg/L±0.2 mg/L below 10 mg/L
±0.4 mg/L above 10 mg/L

%±2% below 100%
±5% above 100%

Response Time: 90% of final reading in 40 seconds
Typical Resolution: 0.006 mg/L
Temperature Compensation: automatic from 0–50°C
Pressure Compensation: automatic from 228 mmHg to 1519 mmHg
Minimum sample flow: none

Vernier Optical DO Probe

Optical DO Probe Metal Guard (ODO-GRD)
Primary Productivity Kit (PPK)
Water Quality Bottles (8 bottles) (WQ-BOT)

Optical DO Probe Replacement Cap (ODO-CAP)
Optical DO Light Shield (ODO-LS)
Optical DO Storage Bottle Cap (ODO-SC)
Optical DO Storage Bottle (ODO-SB)

User Manual:
Warranty: 5-year limited warranty (2 years on cap)