Historical
ISO 3657:1988
Animal and vegetable fats and oils -- Determination of saponification value
The second edition cancels and replaces the first edition (ISO 3657:1977), of which it constitutes a technical revision. The method consists in boiling of a sample under reflux with ethanolic potassium hydroxide solution, followed by titration of the excess potassium hydroxide with standard volumetric hydrochloric acid solution.
International Organization for Standardization [iso]