Decipol scale

A trained panel instead evaluates perceived air quality by using the decipol scale according to Fanger (1988). For this evaluation method, the panel members have been selected and trained according to a procedure described by Clausen et al. 

When using trained subjects the number can be reduced to between 4 and 12. An investigation on the possible errors when performing sensory evaluations by static or dynamic methods, by using trained or untrained subjects and the influence of different scales was performed by Mair et al. (2006). Based on these and earlier results it is recommended that either 30 naive subjects or 8 trained subjects should be used, (for intensity and decipol scale) and a dynamic set up to get standard deviations for the different evaluation scales and methods below 10%. 

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