GOST ISO 5983-2-2016 饲料, 配合饲料, 饲料原料. 氮质量分数的测定和粗蛋白质量分数的计算. 第2部分. 分块消化和蒸气蒸馏法
Feeds, compound feeds, feed raw materials. Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein. Part 2. Block digestion and steam distillation method