Odors are the sensory perception caused of odorants (chemicals) stimulating olfactory receptors in the nose.

Odors can be quantified by five parameters which characterize this human response to the presence of chemical odorants.

1. Odor Threshold (Odor Concentration)

2. Odor Intensity (Supra-threshold)

3. Odor Persistency

4. Characterization

5. Hedonic Tone

Below are brief descriptions of these odor parameters. Please download the following document for a more complete description of odor parameters:

Odor Parameters StCroix Sensory .pdf (471kB)