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ISO/DIS 16634-1

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

General information

40.20     Sep 11, 2025

ISO

ISO/TC 34

International Standard

65.120     67.200.20  

Buying

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Scope

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 16634-1:2008

NOW

PROJECT
ISO/DIS 16634-1
40.20 DIS ballot initiated: 12 weeks
Sep 11, 2025

National adoptions

naSRPS EN ISO 16634-1:2024  
ISS

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/DIS 16634-1:2025)

40.20   DIS ballot initiated: 12 weeks

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