NF ISO 15767

NF ISO 15767

August 2009
Standard Current

Workplace atmospheres - Controlling and characterizing uncertainty in weighing collected aerosols

ISO 15767:2009 provides recommendations for controlling the analytical uncertainty associated with aerosol collection medium instability, where collection medium or collection substrate includes any article used to collect particles (e.g. filter or foam material) as well as those supporting elements which must be analysed by weighing. ISO 15767:2009 is applicable to results compiled both from the literature and, if necessary and feasible, through laboratory experiment. Expected uncertainty associated with given aerosol capture methods is quantified where possible. Recommendations as to materials to be used are given. Means of minimizing uncertainty arising from instability are provided. Recommendations for the weighing procedure are given. A procedure for estimating weighing uncertainty is described. Finally, recommendations are given for the reporting of measured mass, including an uncertainty component and limits of detection and quantification.

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Collections

National standards and national normative documents

Thematics

Gestion des risques et SST

Publication date

August 2009

Number of pages

29 p.

Reference

NF ISO 15767

ICS Codes

13.040.30   Workplace atmospheres

Classification index

X43-266

Print number

1

International kinship

ISO 15767:2009
Sumary
Workplace atmospheres - Controlling and characterizing uncertainty in weighing collected aerosols

ISO 15767:2009 provides recommendations for controlling the analytical uncertainty associated with aerosol collection medium instability, where collection medium or collection substrate includes any article used to collect particles (e.g. filter or foam material) as well as those supporting elements which must be analysed by weighing.

ISO 15767:2009 is applicable to results compiled both from the literature and, if necessary and feasible, through laboratory experiment. Expected uncertainty associated with given aerosol capture methods is quantified where possible. Recommendations as to materials to be used are given. Means of minimizing uncertainty arising from instability are provided. Recommendations for the weighing procedure are given. A procedure for estimating weighing uncertainty is described. Finally, recommendations are given for the reporting of measured mass, including an uncertainty component and limits of detection and quantification.

Replaced standards (1)
NF ISO 15767
March 2004
Standard Cancelled
Workplace atmospheres - Controlling and characterizing errors in weighing collected aerosols

<p>ISO 15767:2003 provides recommendations for controlling the analytical uncertainty associated with aerosol collection medium instability, where collection medium or substrate includes any article used to collect particles (e.g. filter or foam material) as well as those supporting elements which must be analysed by weighing.</p> <p>ISO 15767:2003 is applicable to results compiled both from the literature and, if necessary and feasible, through laboratory experiment. Expected errors associated with given aerosol capture methods are quantified where possible. Recommendations as to materials to be used are given. Means of controlling or correcting errors arising from instability are provided. Recommendations for the weighing procedure are given. A procedure for estimating weighing errors is described. Finally, recommendations are given for the reporting of measured masses.</p>

Table of contents
View the extract
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Termes et définitions
    1
  • 3 Instabilité du poids - Causes et minimisation
    3
  • 3.1 Généralités
    3
  • 3.2 Adsorption d'humidité
    3
  • 3.3 Effets électrostatiques
    4
  • 3.4 Effets dus aux composés volatils (autres que l'eau)
    4
  • 3.5 Détériorations dues aux manipulations
    4
  • 3.6 Variations dues à la poussée d'Archimède
    4
  • 4 Corrections liées à l'instabilité du poids par l'utilisation de blancs
    5
  • 4.1 Généralités
    5
  • 4.2 Nombre minimal de blancs
    5
  • 4.3 Durée et séquence des pesées
    5
  • 4.4 Durée de conditionnement
    5
  • 4.5 Stabilité au cours de l'entreposage
    5
  • 5 Transport des substrats de collecte avec les échantillons d'aérosol recueillis jusqu'au laboratoire
    6
  • 5.1 Généralités
    6
  • 5.2 Recommandations concernant l'emballage
    6
  • 6 Équipement et mode opératoire de pesée
    7
  • 6.1 Balance
    7
  • 6.2 Contrôles environnementaux recommandés
    7
  • 6.3 Autres exigences liées aux équipements
    8
  • 6.4 Mode opératoire
    8
  • 7 Recommandations sur la consignation de la masse mesurée par rapport aux limites LOD et LOQ
    8
  • 8 Estimation de l'incertitude du mode opératoire d'analyse par pesée de substrats de collecte d'aérosols
    9
  • 8.1 Introduction
    9
  • 8.2 Écart-type intralaboratoire estimé sW obtenu sur une période prolongée
    9
  • 9 Mesures permettant de garantir la validité de l'incertitude de mesure déterminée précédemment
    10
  • 9.1 Détermination continue de la reproductibilité intralaboratoire
    10
  • 9.2 Participation aux essais d'aptitude et d'évaluation des performances d'un laboratoire
    10
  • 9.3 Auto-contrôle de l'exactitude de pesée par le laboratoire
    10
  • Annexe A (normative) Composante d'incertitude de la pesée des aérosols collectés
    11
  • Annexe B (informative) Interprétation des limites LOD et LOQ
    15
  • Annexe C (informative) Exemple d'évaluation de méthode
    17
  • Annexe D (normative) Essai d'intégrité pendant le transport
    18
  • Annexe E (informative) Contrôle de l'incertitude de pesée
    20
  • Annexe F (informative) Incertitude de la balance
    21
  • Bibliographie
    23
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