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What is Method 25A?

Determination of Total Gaseous Organic Concentration Using a Flame Ionization Analyzer

This method is applicable for the determination of total gaseous organic
concentration of vapors consisting primarily of alkanes, alkenes, and/or arenes (aromatic
hydrocarbons). The concentration is expressed in terms of propane (or other appropriate organic
calibration gas) or in terms of carbon.

A gas sample is extracted from the source through a heated sample line and glass fiber filter
to a flame ionization analyzer (FIA). Results are reported as volume concentration equivalents of
the calibration gas or as carbon equivalents.

For more information and documents about Method 25A, please consult the EPA's Method 25A webpage.

 

Apex Instruments offers a Method 25A Sampling System. If interested in Method 25A sampling, Apex Instruments works with our customers to make sure we are providing the correct products for your project and will provide you with a price quote. For any questions about our sampling system, please contact sales@apexinst.com.