Fyrite Classic

Fyrite® Classic

Fast, accurate instrument for measuring O2 and CO2
  • Measure Oand CO2 simply, accurately and quickly
  • Multiple ranges available for use in a wide variety of applications
  • Field-replaceable, easy-to-change fluid for keeping the instrument in the field


The Fyrite® Classic is a tried-and-true instrument for measuring oxygen and carbon dioxide. The Fyrite® Classic is available for O2 or CO2, and each gas type of Fyrite® is available in multiple ranges to meet a variety of applications, from combustion analysis to incubators to anesthesiology.

The Fyrite® Classic contains fluid that is specifically designed to absorb O2 or CO2 with minimal cross-sensitivities to other gases, which leads to accurate readings. It is easy to test the fluid’s strength and replace it when needed – which means no need to return the unit for service and no downtime.


O2: 0 to 7.6, 0 to 21 and 0 to 60%

CO2: 0 to 7.6, 0 to 20 and 0 to 60%

Maximum Number of Samples (approximate)

O2: 100

CO2: 300


0 to 7.6% range: 0.2%

0 to 20/21% range: 0.5%

0 to 60% range: 2%

Size (H x W x D)

7.4 x 3.1 x 3.1 in. (18.8 x 7.9 x 7.9 cm)


1.2 lb. (0.54 kg) unfilled

Operating Conditions

-30 to 150 °F (-34 to 65 °C)

Maximum Gas Temperature

850 °F (454 °C)


1 year

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