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Active sources

Have a defined gas flow emitted from source.  Example includes a biofilter or aerated pond.  According to VDI3880, an active source is defined by an average flow velocity of 30m/h…

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Anosmia

Anosmia is the temporary or permanent complete loss of ability to perceive odour. Temporary anosmia can be caused by infection or nasal blockage. Permanent anosmia may be due to damage…

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Assessor

The terms ‘assessor’ and ‘panel member’ are used in the EN13725.  An assessor is a person who participates in odour measurements.  A panel member is an assessor who is qualified…

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ASTM E679-04

ASTM E679-04 United States ‘Standard Practice for Determination of Odor and Taste Threshold by a Forced-Choice Ascending Concentration Series Method of Limits’ provides guidance on olfactometry and sampling. The ASTM…

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ASTM Standards

There are a number of ASTM standards related to odour assessment and regulation: ASTM E679-04 United States ‘Standard Practice for Determination of Odor and Taste Threshold by a Forced-Choice Ascending…

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