This Gulf Standard specifies a method for the determination of the insoluble impurities content of animal and vegetable fats and oils. If it is not desired to include soaps (particularly calcium soaps) or oxidized fatty acids in the insoluble impurities content, it is necessary to use a different solvent and procedure. In this case, an agreement is to be reached between the parties concerned.
GSO ISO 663:2008 history
2008GSO ISO 663:2008 Animal and vegetable fats and oils – Determination of insoluble impurities content