This International Standard specifies three methods (two titrimetric and one potentiometric) for the
determination of the acidity in animal and vegetable fats and oils, hereinafter referred to as fats, The acidity is
expressed preferably as acid value, or alternatively as acidity calculated conventionally
This International Standard is applicable to refined and crude vegetable or animal fats and oils, soap stock
fatty acids or technical fatty acids. The methods are not applicable to waxes.
Since the methods are completely non-specific, they cannot be used to differentiate between mineral acids.
free fatty acids, and other organic acids. The acid value, therefore, also includes any mineral acids that may
be present.