ISO 5985:2002规定了测定不溶于盐酸的灰分的两种动物饲料程序。 适用的程序取决于样品的性质。 程序A适用于简单有机动物饲料和复合饲料，程序B中提到的除外。 程序B适用于不溶于盐酸的灰分超过程序A确定的1%（质量分数）的矿物、矿物混合物和复合饲料。

ISO 5985:2002 specifies two procedures for animal feeding stuffs for the determination of the ash which is insoluble in hydrochloric acid. The applicable procedure depends on the nature of the sample. Procedure A is applicable to simple organic animal feeding stuffs and to compound feeding stuffs, except those mentioned under procedure B. Procedure B is applicable to minerals, mineral mixtures and compound feeding stuffs of which the ash insoluble in hydrochloric acid exceeds 1 % (mass fraction), as determined by procedure A.