Many air pollutants cannot be seen or smelled. Often, what is perceived as pollution coming from an industrial stack is actually water vapour.

Part of the challenge in measuring air pollution is in obtaining an appropriate sample….how do you “catch” air? Are you “catching” a representative sample? The science of emissions measurement is complex and very technical. Air Experts can assist in measuring all the pollutants listed below.

There are many different air pollutants. Rather than repeating information, I will offer links to the Canadian and U.S. government websites. I’m also providing a link to a website that lists the pollutants in a simple and easy-to-understand format.

Government of Canada:

U.S.A. Environmental Protection Agency:

Concise presentation:


Air toxics




Carbon monoxide

Carbon dioxide

Dioxins Fiorans


Hydrochloric acid (HCL)


Particulate matter

  • 2.5 microns
  • 10 microns
  • filterable
  • organic condensable
  • inorganic condensable


Total reduced Sulphur (TRS)

Volatile organic compounds