Vernier Software and Technology
Vernier Software & Technology

Go Direct® O2 Gas Sensor

Go Direct® O2 Gas Sensor product image

The Go Direct O2 Gas Sensor measures gaseous oxygen concentration levels and air temperature. It is useful for a variety of biology and physiology experiments. It connects wirelessly via Bluetooth® wireless technology or wired via USB to your device.


The Go Direct O2 Gas Sensor measures gaseous oxygen concentration and air temperature. This sensor has a wide measurement range, which is ideal for studying human and cellular respiration. A 250 mL Nalgene bottle is included for running controlled experiments with small plants and animals.

The Go Direct O2 Gas Sensor can be used in a variety of experiments:

  • Test catalase activity under various conditions.
  • Measure oxygen consumption at rest and after exercise.
  • Measure the change in gas produced during photosynthesis.
  • Compare the rates of cell respiration in germinating and non-germinating peas.

Rechargeable Battery—Ready When You Are

The Go Direct robust rechargeable battery offers long battery life and provides always-ready operation. Monitor battery life directly from our free Graphical Analysis 4 app. Should the battery run low, simply connect the sensor to the charging cable and keep on collecting—no interruptions or inconvenience to you or your students.

Wired or Wireless—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our free Graphical Analysis 4 app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth wireless technology, allowing you to choose the solution best for your classroom or laboratory.


  • Oxygen Sensor
    • Cell type: Electrochemical cell
    • Range: 0–100% (0–1000 ppt) O2
    • Accuracy (at standard pressure 760 mm Hg): ±1% volume O2
    • Resolution: 0.01% O2
  • Temperature Sensor
    • Type: Thermistor
    • Accuracy: ±0.5°C
    • Resolution: 0.1°C
  • Dimensions
    • Sensor tube length: 38 mm
    • Sensor tube diameter: 28 mm
    • Total length: 155 mm
  • Connections
    • Wireless: Bluetooth
    • Wired: USB

Experiments and Lab Ideas

Compatibility Requirements

  • LabQuest 2
    LabQuest 2

    Partial Support

    The Go Direct® O2 Gas Sensor is partially compatible with LabQuest 2 (version 2.8.1), a standalone data logger with built-in graphing and analysis software. Please see the compatibility notes below for details.

    Learn more about LabQuest 2 »

    Compatibility Notes

    1. Connect this sensor via USB. Wireless data collection is not supported.
  • Computers

    InterfaceGraphical Analysis 4 for ComputersVersion 4.3.1
    No interface requiredFull support 1

    Compatibility Notes

    1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.
  • Chromebook

    InterfaceGraphical Analysis 4 for ChromeVersion 4.3.1
    No interface requiredFull support
  • Mobile Devices
    Mobile Devices

    InterfaceGraphical Analysis 4 for iOSVersion 4.0.3Graphical Analysis for AndroidVersion 4.0
    No interface requiredFull supportComing soon

What’s Included

  • Go Direct® O2 Gas Sensor
  • Micro USB Cable
  • 250 mL Nalgene Bottle w/Lid

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Go Direct® O2 Gas SensorGDX-O2$189
Optional Accessories
BioChamber 2000BC-2000$19
BioChamber 250BC-250$6
O2 Gas Sensor to Spirometer AdapterO2-SPR$8


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 »

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