DIN EN ISO 5983-2:2009-10
Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (ISO 5983-2:2009); German version EN ISO 5983-2:2009
| Fecha edición: |
2009-10-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | This part of ISO 5983 specifies a method for the determination of the 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. |
| Keywords: | Agriculture|Animal feed|Animal feeding|Chemical analysis and testing|Content|Crude proteins|Decomposition methods|Definitions|Determination of content|Digestion method|Distillation methods of analysis|Food products|Inter-laboratory tests|Kjeldahls method|Mathematical calculations|Nitrogen|Nitrogen content|Protein content|Proteins|Steam |
| ICS: | 65.120 - Alimentos para animales |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 5983-2:2009 Idéntica ISO 5983-2:2009 |
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Reemplazo Normas |
Reemplaza a DIN EN ISO 5983-2:2005-10 Reemplaza a DIN EN ISO 5983-2:2009-02 |
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