- Aerosol Density
Aerosol Density is a amount of particulates per volume as described operationally by one of two parameters:
(a) Absorbance index (m) (3.9).
(b) y (3.18).
NOTE: These parameters are not concentrations in the strictest sense, but represent values that are proportional to the concentration and have been shown to function in lieu of a true concentration value for the purposes of testing.