Go Direct® O2 Gas Sensor

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 via Bluetooth® wireless technology or via USB to your device.

SKU: GDX-O2 Categories: ,


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 robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from our free Graphical Analysis 4 app or LabQuest 3 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

Sensor tube length: 38 mm
Sensor tube diameter: 28 mm
Total length: 155 mm

Wireless: Bluetooth
Wired: USB

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

BioChamber 2000 (BC-2000)
BioChamber 250 (BC-250)
Go Direct® Charge Station (GDX-CRG)
O2 Gas Sensor to Spirometer Adapter (O2-SPR)

250 mL Nalgene Bottle w/Lid (CO2-BTL)
Go Direct® 650 mAh Replacement Battery (GDX-BAT-650)
Micro USB Cable (CB-USB-MICRO)

Warranty: 5-year limited warranty (1 year on battery)
User Manual:


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Educational Standards

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