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Vernier™ Go Direct™ CO2 Gas Sensor Products for Science Education

Vernier™ Go Direct™ CO2 Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature, and relative humidity.

Manufacturer:  Vernier™ GDXCO2

Catalog No. S39703

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  • Accuracy
    • 0 to 1,000 ppm: ±100 ppm
    • 1,000 to 10,000 ppm: ±5% of reading +100 ppm
    • 10,000 ppm to 50,000 ppm: ±10% of reading
    • 50,000 to 100,000 ppm: ±15% of reading
  • Temperature Sensor
    • Type: integrated circuit (IC)
    • Accuracy: ±0.5°C
    • Resolution: 0.1°C
  • Relative Humidity Sensor
    • Type: integrated circuit (IC)
    • Accuracy: ±5% or better
    • Resolution: 0.1%
  • Measure the change in gas concentration during cellular respiration.
  • Measure the change in gas concentration during photosynthesis.
  • Study the effect of temperature on cell respiration or metabolism of organisms.
  • Investigate artificial selection in yeast by comparing respiration rates of different strains.
  • Monitor changes in carbon dioxide, temperature, and relative humidity easily.
  • Includes built-in temperature compensation and humidity protection.


High School and College
28 mm shaft diameter
250 mL Nalgene bottle
0 to 100,000 ppm
Bluetooth or USB
Graphical Analysis 4 or LabQuest App
82 mm shaft, 200 mm total length
1 ppm CO2
5-year limited warranty
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