NF ISO 11352

NF ISO 11352

February 2013
Standard Current

Water quality - Estimation of measurement uncertainty based on validation and quality control data

This International Standard specifies methods for the estimation of measurement uncertainty of chemical and physicochemical methods in single laboratories based on validation data and analytical quality control results obtained within the field of water analysis. NOTE 1 The principles of the estimation of uncertainty specified in this International Standard are consistent with the principles described in ISO/IEC Guide 98-3. In this International Standard, the quantification of measurement uncertainty relies on performance characteristics of a measurement procedure obtained from validation and the results of internal and external quality control. NOTE 2 The approaches specified in this International Standard are mainly based on QUAM[11], NEN 7779[8], Nordtest TR 537[10], and Eurolab TR 1[9]. NOTE 3 This International Standard only addresses the evaluation of measurement uncertainty for results obtained from quantitative measurement procedures. The uncertainties associated with results obtained from qualitative procedures are not considered.

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National standards and national normative documents

Publication date

February 2013

Number of pages

35 p.

Reference

NF ISO 11352

ICS Codes

13.060.50   Examination of water for chemical substances
13.060.60   Examination of physical properties of water
17.020   Metrology and measurement in general

Classification index

T90-220

Print number

1 - 11/01/2013

International kinship

ISO 11352:2012
Sumary
Water quality - Estimation of measurement uncertainty based on validation and quality control data

This International Standard specifies methods for the estimation of measurement uncertainty of chemical and

physicochemical methods in single laboratories based on validation data and analytical quality control results

obtained within the field of water analysis.

NOTE 1 The principles of the estimation of uncertainty specified in this International Standard are consistent with the

principles described in ISO/IEC Guide 98-3.

In this International Standard, the quantification of measurement uncertainty relies on performance

characteristics of a measurement procedure obtained from validation and the results of internal and external

quality control.

NOTE 2 The approaches specified in this International Standard are mainly based on QUAM[11], NEN 7779[8], Nordtest

TR 537[10], and Eurolab TR 1[9].

NOTE 3 This International Standard only addresses the evaluation of measurement uncertainty for results obtained

from quantitative measurement procedures. The uncertainties associated with results obtained from qualitative procedures

are not considered.

Replaced standards (1)
XP T90-220
August 2003
Standard Cancelled
Water quality - Protocol for the estimation of uncertainty associated to an analysis result for physico-chemical analysis method

Le présent document se propose de guider un laboratoire d'analyse de l'eau pour l'estimation de l'incertitude de mesure associée à un résultat d'une méthode d'analyse. L'incertitude de mesure peut être estimée selon quatre approches qui sont complémentaires : une approche découlant de la norme NF ENV 13005 (GUM), deux approches utilisant les valeurs de reproductibilité intralaboratoires et une approche découlant de la norme NF ISO 5725-2, utilisant les valeurs de reproductibilité interlaboratoires. Ces différentes approches sont présentées et illustrées dans les différents domaines de l'analyse physico-chimique de l'eau.

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles
    4
  • 5 Principe
    5
  • 6 Mode opératoire
    5
  • 7 Considérations préalables à l'estimation de l'incertitude de mesure
    6
  • 7.1 Description du mesurage
    6
  • 7.2 Description du support d'enregistrement dans lequel l'incertitude de mesure est rapportée
    6
  • 8 Évaluation des données de fidélité et de biais disponibles
    7
  • 8.1 Approche et critères
    7
  • 8.2 Reproductibilité intralaboratoire
    8
  • 8.3 Biais de la méthode et du laboratoire
    10
  • 9 Calcul de l'incertitude-type composée
    15
  • 10 Calcul de l'incertitude élargie
    15
  • 11 Estimation de l'incertitude de mesure à partir de l'écart-type de la reproductibilité
    15
  • 12 Rapport
    16
  • Annexe A (normative) Estimation de l'incertitude-type à partir des cartes de contrôle de l'étendue
    17
  • Annexe B (informative) Exemples d'estimation de l'incertitude de mesure
    18
  • Bibliographie
    27
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