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

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

22-10-2008

Publisher

International Organization for Standardization

ISO 16634-1:2008 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.

This method is not applicable to milk and milk products.

Committee	ISO/TC 34
DevelopmentNote	Supersedes ISO/DIS 16634-1. (10/2008)
DocumentType	Standard
Pages	30
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
GOST R ISO 16634-1 : 2011	Identical
NF EN ISO 16634-1 : 2008	Identical
NBN EN ISO 16634-1 : 2009	Identical
NEN EN ISO 16634-1 : 2008	Identical
NS EN ISO 16634-1 : 1ED 2008	Identical
I.S. EN ISO 16634-1:2008	Identical
PN EN ISO 16634-1 : 2008	Identical
SN EN ISO 16634-1:2009	Identical
UNI EN ISO 16634-1 : 2009	Identical
SS-EN ISO 16634-1:2008	Identical
UNE-EN ISO 16634-1:2009	Identical
BS EN ISO 16634-1:2008	Identical
EN ISO 16634-1:2008	Identical
DIN EN ISO 16634-1:2009-07	Identical

EN ISO 12099:2017	Animal feeding stuffs, cereals and milled cereal products - Guidelines for the application of near infrared spectrometry (ISO 12099:2017)
BS EN ISO 12099:2017	Animal feeding stuffs, cereals and milled cereal products. Guidelines for the application of near infrared spectrometry
UNI EN ISO 12099 : 2010	ANIMAL FEEDING STUFFS, CEREALS AND MILLED CEREAL PRODUCTS - GUIDELINES FOR THE APPLICATION OF NEAR INFRARED SPECTROMETRY
16/30329601 DC : 0	BS EN ISO 12099 - ANIMAL FEEDING STUFFS, CEREALS AND MILLED CEREAL PRODUCTS - GUIDELINES FOR THE APPLICATION OF NEAR INFRARED SPECTROMETRY
ISO 12099:2017	Animal feeding stuffs, cereals and milled cereal products — Guidelines for the application of near infrared spectrometry
I.S. EN ISO 12099:2017	ANIMAL FEEDING STUFFS, CEREALS AND MILLED CEREAL PRODUCTS - GUIDELINES FOR THE APPLICATION OF NEAR INFRARED SPECTROMETRY (ISO 12099:2017)

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 1871:2009	Food and feed products General guidelines for the determination of nitrogen by the Kjeldahl method
ISO 5983-1:2005	Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content Part 1: Kjeldahl method
ISO 20483:2013	Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method
ISO 664:2008	Oilseeds Reduction of laboratory sample to test sample
ISO 6497:2002	Animal feeding stuffs Sampling
ISO 14891:2002	Milk and milk products Determination of nitrogen content Routine method using combustion according to the Dumas principle
ISO 6496:1999	Animal feeding stuffs — Determination of moisture and other volatile matter content
ISO 13690:1999	Cereals, pulses and milled products Sampling of static batches
ISO 5983-2:2009	Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content Part 2: Block digestion and steam distillation method
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 6498:2012	Animal feeding stuffs — Guidelines for sample preparation
ISO 5500:1986	Oilseed residues Sampling
ISO 542:1990	Oilseeds — Sampling
ISO 665:2000	Oilseeds Determination of moisture and volatile matter content

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ISO 16634-1:2008

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