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

Publication date: 26 maj 2009

General information

Current stage: 90.60 Effective date: 5 mar 2025

Originator: ISO

Owner: ISO/TC 34/SC 10

Type: International Standard

ICS: 65.120

Gjuha: anglisht frëngjisht rusisht

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Statusi: Publikuar

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Scope

ISO 5983-2:2009 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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 5983-2:2005

NOW

PUBLISHED
ISO 5983-2:2009
90.60 Close of review
5 mar 2025

National adoptions

SSH ISO 5983-2:2009

DPS

Produkte ushqimore për kafshë - Përcaktimi i përmbajtjes së azotit dhe llogaritja e përmbajtjes së proteinës bruto - Pjesa 2: Blloku i disgregimit dhe metoda e distilimit me avull

60.60 Standard published

DPS/KT 307 më tepër