Historical
ISO 661:1989
Animal and vegetable fats and oils -- Preparation of test sample
The method is not applicable to emulsified fats such as butter, margarine, mayonnaise, ect. The method consists in mixing of the fatty matter, heated, if necessary, to an appropriate temperature, then, if required, separating of insoluble substances by filtration and removing of water by drying with anhydrous sodium sulfate.
International Organization for Standardization [iso]