The purpose of this standard is to define the terms commonly used in the field of surface agents. NOTE — Certain terms, whether or not dissociated from their definition, may appear as commercial terms depending on their use or their form of presentation; in no way can its definitions serve as reference definitions for commercial terms in general. Other terms that appear not to be specific to surface agents are widely used in this field. This standard indicates in particular the specific terms for textile applications, dry cleaning, etc. Terms for other applications may be introduced in this standard. The terms are grouped according to the classification indicated below: