The term fiber/cc for air quality results describes what?

The term fiber/cc for air quality results describes what?

• A. The quantity of fibers in the predetermined size range for each cubic centimeter of air in the space sampled
• B. The weight of fibers per cubic meter
• C. The average fiber length in microns
• D. The total air concentration of all fibers

Answer: (A)

Fiber/cc is a concentration, specifically the number of fibers that fall within the defined size range per cubic centimeter of air in the space sampled. This is a count-based measure, not a weight, and it only includes fibers that meet the predetermined size criteria, since not all fibers pose the same health risk. The unit is used to normalize the count by the sampled air volume, so results can be compared across samples with different volumes. It does not represent weight per volume (mg/m3), it does not reflect average fiber length, and it does not count all fibers regardless of size.

Fiber/cc is a concentration, specifically the number of fibers that fall within the defined size range per cubic centimeter of air in the space sampled. This is a count-based measure, not a weight, and it only includes fibers that meet the predetermined size criteria, since not all fibers pose the same health risk. The unit is used to normalize the count by the sampled air volume, so results can be compared across samples with different volumes. It does not represent weight per volume (mg/m3), it does not reflect average fiber length, and it does not count all fibers regardless of size.