naSRPS EN ISO 16634-2:2023

Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content -Part 2: Cereals, pulses and cereal coproducts (ISO/DIS 16634-2:2025)

General information

Current stage: 40.20 Effective date: Oct 9, 2025

Next stage: 40.60 Next stage date: Dec 11, 2025

Originator: ISS

Owner: E034-4

Type: European Norm

ICS: 67.050 67.060

Languages: English

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Scope

ISO 16634-2:2016 specifies a method for the determination of the total nitrogen content and the calculation of the crude protein content of cereals, pulses and milled cereal products.
This method, like the Kjeldahl method (see References [1] and [6]), does not distinguish between protein nitrogen and non-protein nitrogen. For the calculation of the protein content, various conversion factors are used (see 3.2).

Life cycle

PREVIOUSLY

PUBLISHED
SRPS EN ISO 16634-2:2016

NOW

PROJECT
naSRPS EN ISO 16634-2:2023
40.20 DIS ballot initiated: 12 weeks
Oct 9, 2025

Related project

Adopted from prEN ISO 16634-2 IDENTICAL

Adopted from ISO/DIS 16634-2 IDENTICAL

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