Olfactometry measurements were done using a scale from 0 to 10 to rate the odour on offensiveness (quality and strength) and presence (intensity or strength). Olfactometry tests were done directly on manure samples and control samples that were not visible to the panel members. The results showed that the rating method provides valuable information for comparing manure handling and treatment systems. The results should be used for comparison only.

This provides interesting information on olfactometry at its beginning.