BS EN ISO 5983-2:2009 - Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content. Block digestion and steam distillation method – BSI British Standards

BS EN ISO 5983-2:2009

Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content. Block digestion and steam distillation method

Status : Confirmed, Current   Published : July 2009

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BS EN ISO 5983-2:2009 Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content. Block digestion and steam distillation method

BS EN ISO 5983-2 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 specified in BS EN ISO 5983-2 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.

Contents of BS EN ISO 5983-2:

  • Foreword
  • Scope
  • Normative references
  • Terms and definitions
  • Principle
  • Reagents
  • Apparatus
  • Sampling
  • Preparation of test sample
  • Procedure
  • General
  • Test portion
  • Determination
  • Blank test
  • Recovery tests
  • Calculation and expression of results
  • Calculation
  • Calculation of crude protein content
  • Expression of crude protein content results
  • Precision
  • Interlaboratory tests
  • Repeatability
  • Reproducibility
  • Test report
  • Results of interlaboratory tests
  • Results of a profiency test; comparison of the colorimetric and potentiometric endpoint etermination of the titration
  • Bibliography

 




Standard NumberBS EN ISO 5983-2:2009
TitleAnimal feeding stuffs. Determination of nitrogen content and calculation of crude protein content. Block digestion and steam distillation method
StatusConfirmed, Current
Publication Date31 July 2009
Confirm Date07 December 2019
Normative References(Required to achieve compliance to this standard)ISO 6498, ISO 1871
Informative References(Provided for Information)ISO 385:2005, ISO 8655-3, ISO 5983-1, ISO 8655-2, ISO 8655-5, ISO 6497, ISO 5725-1, ISO 5725-2:2019, BS ISO 5725-2:2019
ReplacesBS EN ISO 5983-2:2005
International RelationshipsEN ISO 5983-2:2009,ISO 5983-2:2009
DescriptorsDistillation methods of analysis, Precision, Mathematical calculations, Separation methods (chemical analysis), Chemical analysis and testing, Nitrogen, Steam distillation, Proteins, Determination of content, Animal feed, Food testing, Food products
ICS65.120
Title in FrenchAliments des animaux. Dosage de l'azote et calcul de la teneur en protéines brutes. Méthode de digestion en bloc et distillation à la vapeur
Title in GermanFuttermittel. Bestimmung des Stickstoffgehaltes und Berechnung des Rohproteingehaltes. Blockaufschluss- und Dampfdestillationsverfahren
CommitteeAW/10
ISBN978 0 580 66817 3
PublisherBSI
FormatA4
DeliveryYes
Pages22
File Size1.577 MB
Price£130.00


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