Quelques termes liées à la parfumerie :

Filter (To)
Physical action which consists in holding (retaining) the insoluble particles in suspension in a liquid by means of a filter: paper, asbestos, tissue, etc. …

Perfume (or Flavor)
Product the most concentrated and generally the richest in a defined line.

Stability
Property of a perfume a little bit sensitive to the different physical chemical changes.