NF EN ISO 4259

NF EN ISO 4259

December 1995
Standard Cancelled

Petroleum products. Determination and application of precision data in relation to methods of test.

Covers the calculation of precision estimates and their use to specifications. In particular, it contains definitions of relevant statistical terms, the procedures to be adopted in the planning of an inter-laboratory test programme, the method of calculating the precision from the results of such a programme and the procedure to be followed in the interpretation of laboratory results in relation both to precision of the methods and to the limits laid down in the specification.

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Main informations

Collections

National standards and national normative documents

Publication date

December 1995

Number of pages

58 p.

Reference

NF EN ISO 4259

ICS Codes

75.080   Petroleum products in general

Classification index

M07-033

Print number

1 - 01/01/1996

International kinship

ISO 4259:1992

European kinship

EN ISO 4259:1995
Sumary
Petroleum products. Determination and application of precision data in relation to methods of test.

Covers the calculation of precision estimates and their use to specifications. In particular, it contains definitions of relevant statistical terms, the procedures to be adopted in the planning of an inter-laboratory test programme, the method of calculating the precision from the results of such a programme and the procedure to be followed in the interpretation of laboratory results in relation both to precision of the methods and to the limits laid down in the specification.

Replaced standards (2)
NF M07-033
September 1970
Standard Cancelled
Liquid fuels. Specifications for petroleum products and validity of test results in relation to the reliability of the methods.

NF M07-040
May 1971
Published document Cancelled
Liquid fuels and petroleum products. Recommended procedure for determining accuracy of test methods for petroleum products and lubricants.

Standard replaced by (1)
NF EN ISO 4259
November 2006
Standard Cancelled
Petroleum products - Determination and application of precision data in relation to methods of test

ISO 4259:2006 covers the calculation of precision estimates and their application to specifications. In particular, it contains definitions of relevant statistical terms, the procedures to be adopted in the planning of an inter-laboratory test programme to determine the precision of a test method, the method of calculating the precision from the results of such a programme, and the procedure to be followed in the interpretation of laboratory results in relation both to precision of the test methods and to the limits laid down in specifications. The procedures in ISO 4259:2006 have been designed specifically for petroleum and petroleum-related products, which are normally homogeneous. However, the procedures described in this International Standard can also be applied to other types of homogeneous products. Careful investigations are necessary before applying ISO 4259:2006 to products for which the assumption of homogeneity can be questioned.

Table of contents
  • 1 Domaine d'application
    1
  • 2 Référence normative
    1
  • 3 Définitions
    1
  • 4 Étapes de l'organisation d'un programme d'essai interlaboratoire pour la détermination de la fidélité d'une méthode d'essai
    3
  • 5 Examen des résultats de l'essai interlaboratoire du point de vue de l'uniformité et des valeurs aberrantes
    5
  • 6 Analyse de la variance et calcul des estimations de fidélité
    11
  • 7 Signification de la répétabilité r et de la reproductibilité R exposées dans les articles précédents
    16
  • 8 Spécifications
    18
  • 9 Contrôle de qualité et spécifications
    19
  • 10 Règles de conformité et de non-conformité, en cas de désaccord
    19
  • Annexes
  • A Détermination du nombre d'échantillons requis (voir 4.3)
    21
  • B Établissement de la formule de calcul du nombre d'échantillons requis (voir 4.3)
    22
  • C Notations et essais
    23
  • D Exemples de résultats d'essais pour la détermination de l'indice de brome et tableaux statistiques
    28
  • E Types de dépendance et transformations correspondantes (voir 5.1)
    36
  • F Analyse de régression linéaire pondérée (voir 5.1)
    39
  • G Règles d'arrondissage des résultats (voir 3.20)
    45
  • H Explication des formules données dans l'article 7
    46
  • J Spécifications relatives à un degré prescrit de caractère critique (voir 8.1)
    48
  • K Bibliographie
    51
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