2008GB/T 5535.1-2008 Animal and vegetable fats and oils.Determination of unsaponifiable matter.Part 1:Method using diethyl ether extraction
1985GB 5535-1985 Determination of unsaponifiable matter in vegetable oils and fats
GB 5535-1985 Determination of unsaponifiable matter in vegetable oils and fats was changed to GB/T 5535.1-2008 Animal and vegetable fats and oils.Determination of unsaponifiable matter.Part 1:Method using diethyl ether extraction.