本文件规定了测定动植物脂肪和油（以下简称“脂肪”）酸度的三种方法（两种滴定法和一种电位法）。酸度最好表示为酸值，或者表示为按常规计算的酸度。 本文件适用于精制和粗加工的植物或动物脂肪和油、肥皂原料脂肪酸或工业脂肪酸。它不适用于蜡。 由于这些方法是完全非特异性的，它们不适用于区分矿物酸、游离脂肪酸和其他有机酸。因此，酸值包括存在的任何矿物酸。 牛奶和奶制品（或来自牛奶和奶制品的脂肪）不在本文件范围内。

This document specifies three methods (two titrimetric and one potentiometric) for the determination of 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 document is applicable to refined and crude vegetable or animal fats and oils, soap stock fatty acids or technical fatty acids. It does not apply to waxes. Since the methods are completely non-specific, they do not apply to differentiating between mineral acids, free fatty acids and other organic acids. The acid value, therefore, includes any mineral acids that are present. Milk and milk products (or fat coming from milk and milk products) are excluded from the Scope of this document.