Specific Odour Emission Rate (SOER)

Specific Odour Emission Rate (SOER)

Determines the odour concentration per time and area (flux).  It is calculated by taking the product of the odour concentration and flow rate inside a sampling hood, divided by the area of the hood used to perform the measurement.  The area represents a ‘hood’ covering over the source such as a windtunnel or static flux hood.  For example if a pond (passive area source) has an odour concentration after olfactometry analysis of 500OU/m3, the flow rate of neutral gas into the static flux hood was 2L/min (0.002m3/min) and the area of the static flux hood covering the surface is 0.6m2, then:

SOER = (500OU/m3 * 0.002m3/min)/0.6m2 = 1.67OU/m2/min

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