Home > Chemical Detection > Technology > Sensors > Flame Ionization Detection (FID)

A flame ionization detector operates on the principle that combustible chemicals produce ions during combustion which can be detected as a current. In practice, a target gas stream is directed into a flame (typically a hydrogen-air flame) which results in the combustion of target chemicals and the production of positively charged ions and electrons. The resulting current is sensed by electrodes placed close to the flame. FID is a non-specific detector, i.e., any molecule with carbon and hydrogen atoms will produce a response.

Photovac, Inc. (1)
Thermo Fisher Scientific, Inc. (1)
Handheld (1)
Person-Portable (1)
Unit Cost
$5,000 - $10,000 (2)
Sample Introduction
Other (2)
Sensitivity / Detection Limit
ppm (1)
ppb (1)
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Photovac, Inc.

Detects up to 50,000 ppm VOCs, including methane, in fugitive emissions or environmental application...

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TVA 1000B Toxic Vapor Analyzer

TVA 1000B Toxic Vapor Analyzer

Thermo Fisher Scientific, Inc.

The Thermo Scientific TVA 1000B is an over-the-shoulder portable vapor analyzer that offers both PID...

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