DIN EN ISO 16634-1:2009 PDF

Scope: This part of ISO 16634 specifies a method for the determination of the total nitrogen content and the calculation of crude protein content of oilseeds and animal feeding stuffs. This method, like the Kjeldahl method, does not distinguish between protein nitrogen and non-protein nitrogen. For the calculation of protein content, various conversion factors are used (see Annex D). This method is not applicable to milk and milk products, for which a method is specified in ISO 14891 I IDF 185.

DIN EN ISO 16634-1:2009 Referenced Document

ISO 6496 Animal feeding stuffs - Determination of moisture and other volatile matter content
ISO 6498 Animal feeding stuffs - Guidelines for sample preparation*， 2012-06-01 Update
ISO 664 Oilseeds - Reduction of laboratory sample to test sample
ISO 665 Oilseeds — Determination of moisture and volatile matter content*， 2020-02-19 Update
ISO 771 Oilseed meals - Determination of moisture and volatile matter content*， 2021-02-28 Update

2009 DIN EN ISO 16634-1:2009-07 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); German version EN ISO 16634-1:2008
2009 DIN EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); English version of DIN EN ISO 16634-1:
0000 DIN EN ISO 16634:2006