标准摘要
[中文适用范围]： ISO 8968|IDF 20 的这一部分规定了直接和间接测定液态奶、全脂奶或脱脂奶中蛋白氮含量的方法。 [外文原描述]： ISO 8968-4|IDF 20-4:2016 specifies a method for the direct and indirect determination of the protein nitrogen content of liquid, whole or skimmed milk.
英文名称Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)