Air quality — Validation of air quality measurement methods in the standardization process

This document provides an overview of the validation of air quality measurement methods in the standardization process. This document deals with robustness testing and interlaboratory testing as the two main steps of partial and full validation. It applies to the different inter-related elements of air quality measurement methods, covering e.g. sampling, sample preparation, storage and transportation of the sample, extraction, analysis or quantification of a measured component and reporting. Consequently, this document focuses on the "why" and "what" of validation tasks in direct relation to the different steps of the standardization process. This document is focused on the validation tasks for measurement methods either for the whole measurement process or for one of its constituent parts. Given the informative aim of this document, it does not contain detailed procedures for performing the validation tasks, such as number of laboratories, number of samples, etc. This document is relevant to measurement methods in ISO/TC 146 and all of its subcommittees.

Qualité de l'air — La validation des méthodes de mesure de la qualité de l'air dans le processus de normalisation

General Information

Status
Published
Publication Date
10-Dec-2024
Current Stage
6060 - International Standard published
Start Date
11-Dec-2024
Due Date
11-Dec-2024
Completion Date
11-Dec-2024
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Technical
Report
ISO/TR 24107
First edition
Air quality — Validation of air
2024-12
quality measurement methods in
the standardization process
Qualité de l'air — La validation des méthodes de mesure de la
qualité de l'air dans le processus de normalisation
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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or ISO’s member body in the country of the requester.
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Purposes for validation . 4
6 Objectives for validation . 5
7 Types of validation . 5
7.1 Validation of reference methods .5
7.2 Validation of alternative methods .7
7.3 Validation in the absence of certified reference materials .7
8 Objective, design and documentation of a validation study . 8
8.1 General .8
8.2 Objective of a validation study .8
8.2.1 General .8
8.2.2 Purpose(s) for performing the measurement .8
8.2.3 Representative sampling .8
8.2.4 Sample preparation .8
8.2.5 Analysis .9
8.2.6 Performance characteristics .9
8.2.7 Determination of the result of measurement and the associated measurement
uncertainty .9
8.2.8 Documentation and reporting .9
8.3 Design of the validation study .9
8.4 Documentation of the validation study .10
8.4.1 Report on the validation study .10
8.4.2 Storage of results of the validation study .10
9 Examples of validation procedures for specific types of measurement method .11
9.1 General .11
9.2 Stationary source emissions .11
9.2.1 General .11
9.2.2 Manual measurement methods .11
9.2.3 Automated measurement methods .11
9.2.4 Test bench validation . .11
9.2.5 Field test validation . 12
9.2.6 Final evaluation . 12
9.3 Workplace atmospheres . . 12
9.4 Ambient atmospheres . 12
9.5 Meteorology . 12
9.6 Indoor air . 12
Annex A (informative) Stationary source emissions . 14
Annex B (informative) Workplace atmospheres .35
Annex C (informative) Ambient atmospheres . 47
Annex D (informative) Meteorology .50
Annex E (informative) Indoor air . 51
Annex F (informative) Information from other sources .54
Bibliography .56

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 146, Air quality, Subcommittee SC 4, General
aspects.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
Introduction
ISO/IEC 17025 defines expectations for verification and validation of test methods. These expectations are
based on definitions in ISO/IEC Guide 99 and aim to ensure that test methods are suitable for their intended
use and that test results have a known, documented level of quality.
This document describes protocols that have been used within ISO/TC 146 and other technical committees
on air quality to verify and validate measurement methods. It also establishes guidance intended to be used
for method validation. This document seeks to establish a consistent framework for method validation
within ISO/TC 146 and its subcommittees.

v
Technical Report ISO/TR 24107:2024(en)
Air quality — Validation of air quality measurement methods
in the standardization process
1 Scope
This document provides an overview of the validation of air quality measurement methods in the
standardization process.
This document deals with robustness testing and interlaboratory testing as the two main steps of partial
and full validation. It applies to the different inter-related elements of air quality measurement methods,
covering e.g. sampling, sample preparation, storage and transportation of the sample, extraction, analysis or
quantification of a measured component and reporting.
Consequently, this document focuses on the "why" and "what" of validation tasks in direct relation to
the different steps of the standardization process. This document is focused on the validation tasks for
measurement methods either for the whole measurement process or for one of its constituent parts.
Given the informative aim of this docu
...

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