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BSI BS EN ISO 5983-2:2009

Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content -- Block digestion and steam distillation method
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BSI BS EN ISO 5983-2:2009

Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content -- Block digestion and steam distillation method

PUBLISH DATE 2009
PAGES 22
BSI BS EN ISO 5983-2:2009

This part of ISO 5983 specifies a method for the determination of nitrogen content of animal feeding stuffs according to the Kjeldahl method, and a method for the calculation of the crude protein content.

It is suitable for use as a semi-micro rapid routine method using block digestion, copper catalyst, and steam distillation into boric acid.

The method is applicable to the determination of greater than 0,5 % mass fraction Kjeldahl nitrogen in animal feeding stuffs, pet foods, and their raw materials.

The method does not measure oxidized forms of nitrogen nor heterocyclic nitrogen compounds.

The method does not distinguish between protein nitrogen and non-protein nitrogen.

NOTE If it is of importance to determine the content of non-protein nitrogen, an appropriate method can be used.

SDO BSI: British Standards Institution
Document Number ISO 5983-2
Publication Date July 31, 2009
Language en - English
Page Count
Revision Level
Supercedes
Committee AW/10
Publish Date Document Id Type View
July 31, 2009 BS EN ISO 5983-2:2009 Revision
Aug. 19, 2005 BS EN ISO 5983-2:2005 Revision