This standard specifies two methods for the determination of free fatty acids in animal and vegetable oils - indicator method and potentiometer method. This standard applies to animal and vegetable oils, not to waxes.
GB/T 5530-1998 history
2016GB 5009.229-2016 Determination of acid value in food in national food safety standard
2005GB/T 5530-2005 Animal and vegetable fats and oils--Determination of acid value and acidity
1985GB/T 5530-1985 Determination of acid value and acidity of animal and vegetable oils and fats