GOST ISO 5983-2-2016 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
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
ISO 6498:1998 Animal feeding stuffs - Preparation of test samples
ISO 6498:2012 Animal feeding stuffs - Guidelines for sample preparation
GOST ISO 5983-2-2016 history
2016GOST ISO 5983-2-2016 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