Most of ambient air monitoring stations is measuring concentration of pollutants with direct, or
indirect impact on human health and natural environment.
Inconvenient odors may be caused by different trace pollutants. Human nose is more sensitive for
those than most of the analyzers. It is also not necessarily sure that odor feeling caused by several
“odor pollutants” would add up.
Instrument to determine odor effect of a certain gas sample are called olfactometers.
Portable, mobile or on-line stationary odor monitoring analytic instrumentation is interpreting the gas
detector information in terms of odor units. Proper interpretation is periodically set using
olfactometers.