ISO 8381？IDF 123:2008规定了确定牛奶婴儿食品脂肪含量的参考方法。 该方法适用于不含或不超过淀粉，糊精，蔬菜，水果和肉类等添加物质量的5％（干物质）的质量分数的液体，浓缩和干燥的基于乳的婴儿食品。 该方法不适用于由于淀粉或糊精的质量分数多于百分之几而不能完全溶解在氨中的产品，或不存在硬团块。该方法也不适用于含有大量游离脂肪酸的产品。这些产品的结果将会太低

ISO 8381¦IDF 123:2008 specifies the reference method for the determination of the fat content of milk-based infant foods. The method is applicable to liquid, concentrated and dried milk-based infant foods with no, or not more than a mass fraction of 5 % (dry matter) of such added matter as starch, dextrin, vegetables, fruit and meat. The method is not applicable to products which do not dissolve completely in ammonia owing to the presence of starch or dextrin at mass fractions of more than a few percent, or to the presence of hard lumps. The method is also not applicable to products which contain free fatty acids in significant quantities. The results obtained for these products will be too low.