NF EN ISO 7971-3

NF EN ISO 7971-3

October 2009
Standard Cancelled

Cereals - Determination of bulk density, called mass per hectolitre - Part 3 : routine method

ISO 7971-3:2009 specifies a routine method for the determination of bulk density, called “mass per hectolitre” of cereals as grain using manual or automatic, mechanical, electric or electronic mass per hectolitre measuring instruments.

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National standards and national normative documents

Publication date

October 2009

Number of pages

20 p.

Reference

NF EN ISO 7971-3

ICS Codes

17.060   Measurement of volume, mass, density, viscosity
67.060   Cereals, pulses and derived products

Classification index

V03-719-3

Print number

1 - 12/10/2009

International kinship

ISO 7971-3:2009

European kinship

EN ISO 7971-3:2009
Sumary
Cereals - Determination of bulk density, called mass per hectolitre - Part 3 : routine method

ISO 7971-3:2009 specifies a routine method for the determination of bulk density, called “mass per hectolitre” of cereals as grain using manual or automatic, mechanical, electric or electronic mass per hectolitre measuring instruments.

Replaced standards (1)
NF V03-719
September 1996
Standard Cancelled
Cereals. Determination of bulk density, called "mass per hectolitre".

La masse volumique dite "masse à l'hectolitre", également et traditionnellement appelée "poids spécifique", est un critère universellement utilisé dans le commerce des céréales et principalement du blé. Sa détermination, simple et facile à mettre en oeuvre, donne quelques indications sur la teneur en eau et les impuretés des céréales et le rendement en farine dans le cas des blés.

Standard replaced by (1)
NF EN ISO 7971-3
March 2019
Standard Current
Cereals - Determination of bulk density, called mass per hectolitre - Part 3 : routine method

This document specifies a routine method for the determination of bulk density, called "mass per hectolitre", of cereals as grain using manual or automatic, mechanical, electric or electronic mass per hectolitre measuring instruments. NOTE Further details of the measuring instruments are specified in ISO 7971‑2:2019, 6.4.

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    1
  • 5 Appareillage
    2
  • 6 Mode opératoire
    2
  • 6.1 Généralités
    2
  • 6.2 Instruments à fonctionnement manuel
    2
  • 6.3 Instruments à fonctionnement automatique
    3
  • 6.4 Expression des résultats
    3
  • 7 Fidélité
    3
  • 7.1 Essai interlaboratoires
    3
  • 7.2 Répétabilité
    3
  • 7.3 Reproductibilité
    4
  • 7.4 Comparaison de deux groupes de mesures dans un laboratoire
    4
  • 7.5 Comparaison de deux groupes de mesures dans deux laboratoires
    4
  • 7.6 Incertitude
    4
  • 8 Rapport d'essai
    5
  • Annexe A (informative) Description des dimensions et de l'utilisation de l'appareil KERN
    6
  • Annexe B (informative) Description des dimensions et de l'utilisation de l'appareil NILEMA LITRE
    10
  • Annexe C (informative) Résultats des essais interlaboratoires
    12
  • Bibliographie
    14
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