NF EN ISO 8968-3

NF EN ISO 8968-3

October 2007
Standard Current

Milk - Determination of nitrogen content - Part 3 : block-digestion method (semi-micro rapid routine method)

ISO 8968-3|IDF 20-3:2004 specifies a method for the determination of the nitrogen content of liquid, whole or skimmed milk.

It concerns a semi-micro rapid routine method following the block-digestion principle.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2007

Number of pages

19 p.

Reference

NF EN ISO 8968-3

ICS Codes

67.100.10   Milk and processed milk products

Classification index

V04-221-3

Print number

1 - 26/10/2007

International kinship

ISO 8968-3:2004

European kinship

EN ISO 8968-3:2007
Sumary
Milk - Determination of nitrogen content - Part 3 : block-digestion method (semi-micro rapid routine method)

ISO 8968-3|IDF 20-3:2004 specifies a method for the determination of the nitrogen content of liquid, whole or skimmed milk.

It concerns a semi-micro rapid routine method following the block-digestion principle.

Replaced standards (1)
NF V04-211
December 1971
Standard Cancelled
Milk. Determination of total nitrogen content. (kjeldahl method).

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    2
  • 5 Réactifs
    2
  • 6 Appareillage
    3
  • 7 Échantillonnage
    4
  • 8 Préparation de l'échantillon pour essai
    4
  • 9 Mode opératoire
    4
  • 9.1 Prise d'essai et prétraitement
    4
  • 9.2 Détermination
    5
  • 9.3 Essai à blanc
    6
  • 9.4 Essais de récupération
    6
  • 10 Calcul et expression des résultats
    7
  • 10.1 Calcul de la teneur en azote
    7
  • 10.2 Calcul de la teneur en protéines totales
    7
  • 11 Fidélité
    8
  • 11.1 Essai interlaboratoires
    8
  • 11.2 Répétabilité
    8
  • 11.3 Reproductibilité
    8
  • 12 Rapport d'essai
    8
  • Annexe A (informative) Résultats de l'essai interlaboratoires
    9
  • Annexe B (informative) Mode opératoire modifié pour l'analyse des autres produits laitiers
    10
  • Bibliographie
    11
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