ISO 15957
(Main)Test dusts for evaluating air cleaning equipment
Test dusts for evaluating air cleaning equipment
ISO 15957:2015 defines the properties of load test dusts used for heating, ventilation, and air conditioning (HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of efficiency performance are not included.
Poussières d'essai pour l'évaluation des équipements d'épuration d'air
L'ISO 15957:2015 définit les propriétés des poussières d'essai de colmatage utilisées pour les filtres à air pour le chauffage, la ventilation, et le conditionnement d'air (CVC) ainsi que pour les équipements d'épuration d'air en laboratoires. Les poussières d'essai utilisées pour l'évaluation de l'efficacité sont exclues.
General Information
- Status
- Not Published
- Technical Committee
- ISO/TC 142 - Cleaning equipment for air and other gases
- Drafting Committee
- ISO/TC 142 - Cleaning equipment for air and other gases
- Current Stage
- 6000 - International Standard under publication
- Start Date
- 10-Jan-2026
- Completion Date
- 10-Jan-2026
Relations
- Effective Date
- 01-Oct-2022
- Effective Date
- 01-Oct-2022
Overview
ISO/FDIS 15957:2025 (2nd edition) is an international standard developed by ISO Technical Committee ISO/TC 142, which defines the properties of load test dusts specifically designed for evaluating heating, ventilation, and air conditioning (HVAC) air filters and air cleaning equipment in laboratory environments. Unlike standards that address dusts for efficiency performance evaluation, ISO 15957 focuses exclusively on load test dusts-the dusts used during endurance or loading tests to simulate real-life operational conditions of air filters and cleaning devices.
This standard updates and replaces its 2015 predecessor with technical revisions aimed at improving test dust classifications, particle size distributions, chemical composition specifications, and analysis methods. It serves as a critical reference for manufacturers, testing laboratories, and researchers working on air cleaning equipment and HVAC system performance validation.
Key Topics
Test Dust Designations and Categories
ISO 15957 classifies load test dusts into five categories (L1 to L5), each defined by particle composition, median particle diameter, and density:
- L1: Mixture including Arizona desert sand, carbon black, and milled cotton linters; used traditionally in ANSI/ASHRAE 52.2 filter testing.
- L2: Arizona desert sand-based dust conforming to ISO 12103-1, A2 fine test dust.
- L3: Sintered Kanto loam (APPIE SAP Test Powder 3 Class 3), representing fine particle loading.
- L4: Mixture of Arizona desert sand and milled cotton linters without carbon black, related to ANSI/AHRI 680.
- L5: Primarily titanium dioxide (Kronos 2160), notable for fine particle size, median diameter around 0.4 µm.
Chemical Composition and Physical Properties
The standard mandates precise chemical composition ranges for each test dust category, detailing silica (SiO₂), alumina (Al₂O₃), iron oxide (Fe₂O₃), calcium oxide (CaO), magnesium oxide (MgO), carbon black, and specific organic matter content. Accurate chemical profiles ensure repeatability and relevance of test dusts to real-world particle behavior.
Particle Size Distribution & Analysis
Particle size distribution is crucial for replicating real particulate loads in air filters. ISO/FDIS 15957 references particle size standards such as ISO 12103-1 and EN 15051-2 for measurement procedures including laser diffraction scattering. Detailed undersize volume fractions and median diameters are specified to ensure consistency of test dust performance across labs.
Application Guidance
The document outlines the application of each dust type for different filter evaluation scenarios - from initial filter loading to endurance performance testing. It emphasizes the importance of selecting appropriate dust to mirror environmental conditions for realistic HVAC and air cleaning equipment tests.
Applications
- Laboratory Testing of HVAC Filters: Ensures consistent and comparable evaluation of filter loading capacity, pressure drop increase, and durability.
- Performance Validation of Air Cleaning Systems: Supports product development and quality control for air filters used in buildings, industrial environments, and cleanrooms.
- Comparative Research Studies: Facilitates international comparison of air filter technology by standardizing dust loading materials.
- Energy Consumption and Lifecycle Assessments: Provides reliable data on how dust load impacts energy use and filter longevity under laboratory conditions.
Related Standards
ISO/FDIS 15957 references and aligns with several critical international standards for comprehensive filter and dust testing protocols:
- ISO 12103-1:2024 – Road vehicles - Test contaminants for filter evaluation - Part 1: Arizona test dust.
- ISO 16890-3 – Air filters for general ventilation - Determination of gravimetric efficiency related to dust captured.
- EN 15051-2 – Workplace exposure - Measurement of dustiness of bulk materials, focusing on dust size and distribution.
- ASHRAE 52.2:2025 – Method of testing general ventilation air-cleaning devices for removal efficiency by particle size.
- SAP 14-12 – APPIE Standard for test powders used in industry for particle size characterization.
Conclusion
ISO/FDIS 15957:2025 provides an authoritative framework for the use of standardized load test dusts in evaluating air cleaning equipment and HVAC filters in laboratory settings. By defining key dust properties, particle size analysis methods, and chemical composition requirements, it enables manufacturers and testing bodies to simulate realistic loading conditions accurately. This leads to improved filter design, better indoor air quality assurance, and enhanced energy efficiency throughout the lifecycle of air cleaning systems.
Keywords: ISO 15957, test dust, air cleaning equipment, HVAC filters, load test dust, particle size distribution, chemical composition, laboratory testing, air filter evaluation, air quality standards.
ISO/FDIS 15957 - Test dusts for evaluating air cleaning equipment Released:31. 10. 2025
REDLINE ISO/FDIS 15957 - Test dusts for evaluating air cleaning equipment Released:31. 10. 2025
ISO/FDIS 15957 - Poussières d'essai pour l'évaluation des équipements d'épuration d'air Released:20. 12. 2025
Frequently Asked Questions
ISO 15957 is a draft published by the International Organization for Standardization (ISO). Its full title is "Test dusts for evaluating air cleaning equipment". This standard covers: ISO 15957:2015 defines the properties of load test dusts used for heating, ventilation, and air conditioning (HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of efficiency performance are not included.
ISO 15957:2015 defines the properties of load test dusts used for heating, ventilation, and air conditioning (HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of efficiency performance are not included.
ISO 15957 is classified under the following ICS (International Classification for Standards) categories: 91.140.30 - Ventilation and air-conditioning systems. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 15957 has the following relationships with other standards: It is inter standard links to ISO/IEC 11179-3:2013/Amd 1:2020, ISO 15957:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 15957 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
FINAL DRAFT
International
Standard
ISO/FDIS 15957
ISO/TC 142
Test dusts for evaluating air
Secretariat: UNI
cleaning equipment
Voting begins on:
Poussières d'essai pour l'évaluation des équipements d'épuration 2025-11-14
d'air
Voting terminates on:
2026-01-09
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 15957:2025(en) © ISO 2025
FINAL DRAFT
ISO/FDIS 15957:2025(en)
International
Standard
ISO/FDIS 15957
ISO/TC 142
Test dusts for evaluating air
Secretariat: UNI
cleaning equipment
Voting begins on:
Poussières d'essai pour l'évaluation des équipements
d'épuration d'air
Voting terminates on:
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 15957:2025(en) © ISO 2025
ii
ISO/FDIS 15957:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test dusts designation . 2
5 Chemical composition . 3
6 Particle size distribution . 3
7 Particle size analysis procedure . 4
7.1 L1 test dust . .4
7.2 L2 test dust .4
7.3 L3 test dust .4
7.4 L4 test dust .4
7.5 L5 test dust .4
8 Properties . 4
8.1 L1 test dust . .4
8.2 L2 test dust .5
8.3 L3 test dust .5
8.4 L4 test dust .5
8.5 L5 test dust .5
9 Application . 5
9.1 General .5
9.2 L1 test dust . .5
9.3 L2 test dust .5
9.4 L3 test dust .5
9.5 L4 test dust .5
9.6 L5 test dust .5
10 Related standards . 5
11 Requirements for load test dust distribution . 6
Annex A (informative) Physical data of test dust . 7
Bibliography . 8
iii
ISO/FDIS 15957:2025(en)
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 142, Cleaning equipment for air and other gases,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC
195, Cleaning equipment for air and other gases, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 15957:2015), which has been technically
revised.
The main changes are as follows:
— Clause 4, Table 1, addition of test dust L5 Kronos 2160;
— Clause 4, Table 1, addition of the mean diameter for carbon.
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
ISO/FDIS 15957:2025(en)
Introduction
Filters are subjected to evaluation of their initial performance and dust-loaded performance in laboratory
tests using specified test dusts. The results reflect the performance of the filter as installed in a building.
However, since the properties of atmospheric aerosols vary to a large extent regionally, seasonally, and
according to weather conditions, test data obtained with a given test dust seldom accurately predict the
filter performance as actually used. In addition to this, the test results with a given test dust can differ from
those obtained by other laboratories because the filter performance is affected by many factors, for example,
particle size distribution, particle agglomeration and electrical charge. Despite these problems in testing
filter performance, test data are used for the classification of filters, estimation of energy consumption, life
cycle cost (LCC) and life cycle assessment (LCA).
The test dust used for evaluating initial performance and loaded performance of filters can have a different
specification from the dust used to achieve filter loading.
This document does not control the specification, manufacturing or use of test dusts. It describes the
properties of test dusts which can be used to load filters, and the requirements for test dust generation
that will ensure that useful laboratory test results are obtained in order to mimic the actual use as much as
possible.
v
FINAL DRAFT International Standard ISO/FDIS 15957:2025(en)
Test dusts for evaluating air cleaning equip
...
ISO/FDIS 15957:2025 (Ed.2)
ISO/TC 142
Secretariat: UNI
Date: 2025-10-30
Test dusts for evaluating air cleaning equipment
Poussières d'essai pour l'évaluation des équipements d'épuration d'air
FDIS stage
ISO #####-#:####(X/FDIS 15957:2025(en)
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 the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO #### 2025 – All rights reserved
ii
ISO/FDIS 15957:2025(Ed. 2en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test dusts designation . 2
5 Chemical composition . 3
6 Particle size distribution . 3
7 Particle size analysis procedure . 4
7.1 L1 test dust . 4
7.2 L2 test dust . 4
7.3 L3 test dust . 4
7.4 L4 test dust . 4
7.5 L5 test dust . 4
8 Properties . 5
8.1 L1 test dust . 5
8.2 L2 test dust . 5
8.3 L3 test dust . 5
8.4 L4 test dust . 5
8.5 L5 test dust . 5
9 Application . 5
9.1 General . 5
9.2 L1 test dust . 5
9.3 L2 test dust . 5
9.4 L3 test dust . 5
9.5 L4 test dust . 5
9.6 L5 test dust . 6
10 Related standards . 6
11 Requirements for load test dust distribution . 6
Annex A (informative) Physical data of test dust . 7
Bibliography . 8
iii
ISO #####-#:####(X/FDIS 15957:2025(en)
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 1Part 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 DirectivesIEC Directives, Part 2Part 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 142, Cleaning equipment for air and other gases,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 195,
Cleaning equipment for air and other gases, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 15957:2015), which has been technically
revised.
The main changes are as follows:
— Clause 4, Table 1— Clause 4, Table 1,, addition of test dust L5 Kronos 2160;
— Clause 4, Table 1— Clause 4, Table 1,, addition of the mean diameter for carbon.
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.
© ISO #### 2025 – All rights reserved
iv
ISO/FDIS 15957:2025(Ed. 2en)
Introduction
Filters are subjected to evaluation of their initial performance and dust-loaded performance in laboratory
tests using specified test dusts. The results could reflect the performance of the filter as installed in a building.
However, since the properties of atmospheric aerosols vary to a large extent regionally, seasonally, and
according to weather conditions, test data obtained with a given test dust seldom accurately predict the filter
performance as actually used. In addition to this, the test results with a given test dust might not agree withcan
differ from those obtained by other laboratories because the filter performance is affected by many factors,
for example, particle size distribution, particle agglomeration, and electrical charge. Despite these problems
in testing filter performance, test data are used for the classification of filters, estimation of energy
consumption, life cycle cost (LCC),) and life cycle assessment (LCA).
The test dust used for evaluating initial performance and loaded performance of filters can have a different
specification from the dust used to achieve filter loading.
This document does not control the specification, manufacturing, or use of test dusts. It describes the
properties of test dusts which can be used to load filters, and the requirements for test dust generation that
will ensure that useful laboratory test results are obtained in order to mimic the actual use as much as possible.
v
ISO/FDIS 15957:2025(en)
Test dusts for evaluating air cleaning equipment
1 Scope
This document defines the properties of load test dusts used for heating, ventilation, and air conditioning
(HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of efficiency
performance are not included.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 12103--1:2024, Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust
ISO 16890--3, Air filters for general ventilation — Part 3: Determination of the gravimetric efficiency and the air
flow resistance versus the mass of test dust captured
EN 15051-2, Workplace exposure - Measurement of the dustiness of bulk materials - Part 2: Rotating drum
method
ASHRAE 52.2:2025, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by
Particle Size
SAP 14-12, SAP Test Powder 3
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
3.1 3.1
dust feeder
device which is used to distribute test dust to the filter
[SOURCE: ISO 29464:2024, 3.2.44]
3.2 3.2
median diameter
diameter of the particle for which the cumulated volume fraction is equal to 50 % on a cumulated volume
particle size distribution curve
[SOURCE: ISO 29464:2024, 3.2.36]
3.3 3.3
particle size
geometric diameter (equivalent spherical, optical or aerodynamic, depending on context) of the particles of
an aerosol
--------
...
PROJET FINAL
Norme
internationale
ISO/FDIS 15957
ISO/TC 142
Poussières d'essai pour l'évaluation
Secrétariat: UNI
des équipements d'épuration d'air
Début de vote:
Test dusts for evaluating air cleaning equipment 2025-11-14
Vote clos le:
2026-01-09
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INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
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NATIONALE.
Numéro de référence
ISO/FDIS 15957:2025(fr) © ISO 2025
PROJET FINAL
ISO/FDIS 15957:2025(fr)
Norme
internationale
ISO/FDIS 15957
ISO/TC 142
Poussières d'essai pour l'évaluation
Secrétariat: UNI
des équipements d'épuration d'air
Début de vote:
Test dusts for evaluating air cleaning equipment
2025-11-14
Vote clos le:
2026-01-09
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
DOCUMENT PROTÉGÉ PAR COPYRIGHT
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
© ISO 2025 INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
PROJETS DE NORMES
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SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse Numéro de référence
ISO/FDIS 15957:2025(fr) © ISO 2025
ii
ISO/FDIS 15957:2025(fr)
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Désignation des poussières d'essai . 2
5 Composition chimique . 3
6 Distribution granulométrique . 3
7 Mode opératoire d'analyse granulométrique . 4
7.1 Poussière d'essai L1 .4
7.2 Poussière d'essai L2 .4
7.3 Poussière d'essai L3 .4
7.4 Poussière d'essai L4 .4
7.5 Poussière d'essai L5 .4
8 Propriétés . . 5
8.1 Poussière d'essai L1 .5
8.2 Poussière d'essai L2 .5
8.3 Poussière d'essai L3 .5
8.4 Poussière d'essai L4 .5
8.5 Poussière d'essai L5 .5
9 Application . 5
9.1 Généralités .5
9.2 Poussière d'essai L1 .5
9.3 Poussière d'essai L2 .5
9.4 Poussière d'essai L3 .5
9.5 Poussière d'essai L4 .6
9.6 Poussière d'essai L5 .6
10 Normes associées . 6
11 Exigences relatives à la distribution de la poussière d'essai de colmatage . 6
Annexe A (informative) Données physiques de la poussière d'essai . 8
Bibliographie . 9
iii
ISO/FDIS 15957:2025(fr)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n'avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l'adresse
www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou partie de
tels droits de propriété.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le Comité technique ISO/TC 142, Séparateurs aérauliques, en
collaboration avec le comité technique CEN/TC 195, Séparateurs aérauliques, du Comité européen de
normalisation CEN/TC 195, Équipement de nettoyage de l’air et d’autres gaz, conformément à l'Accord de
coopération technique entre l'ISO et le CEN (Accord de Vienne).
Cette deuxième édition annule et remplace la première édition (ISO 15957:2015), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— Article 4, Tableau 1, ajout de la poussière d'essai L5 Kronos 2160;
— Article 4, Tableau 1, ajout du diamètre moyen pour le carbone.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.
iv
ISO/FDIS 15957:2025(fr)
Introduction
Les filtres sont soumis à une évaluation de leur performance initiale et de leur performance chargés de
poussière au cours d'essais en laboratoire en utilisant des poussières d'essai spécifiées. Les résultats
reflètent la performance du filtre tel qu’installé dans un bâtiment. Toutefois, les propriétés des aérosols
atmosphériques variant considérablement suivant la région, la saison et les conditions météorologiques, les
données d'essai obtenues avec une poussière d'essai donnée permettent rarement de prédire avec précision
la performance du filtre tel qu'il est réellement utilisé. De plus, les résultats d’essai avec une poussière d'essai
donnée peuvent différer de ceux obtenus par d'autres laboratoires car la performance du filtre est influencée
par de nombreux facteurs, par exemple, la distribution granulométrique, les agglomérats de particules et
la charge électrique. En dépit de ces problèmes rencontrés lors de l'essai de la performance des filtres, les
données d'essai sont utilisées pour la classification des filtres, l'estimation de la consommation d'énergie, le
cout du cycle de vie (LCC) et l’évaluation du cycle de vie (LCA).
La poussière d’essai utilisée pour l’évaluation de la performance initiale et la performance en charge des
filtres peut avoir une spécification différente en fonction de la poussière utilisée pour réaliser le chargement
du filtre.
Le présent document ne vise pas à contrôler la spécification, la fabrication ou l'utilisation des poussières
d'essai. Il décrit les propriétés des poussières d'essai pouvant être utilisées pour charger les filtres, et les
exigences relatives à la génération des poussières d’essai qui garantiront que des résultats d'essais en
laboratoire utiles sont obtenus afin de simuler l'application réelle le mieux possible.
v
PROJET FINAL Norme internationale ISO/FDIS 15957:2025(fr)
Poussières d'essai pour l'évaluation des équipements
d'épuration d'air
1 Domaine d’application
Le présent document définit les propriétés des poussières d'essai de colmatage utilisées pour les filtres à air
pour le chauffage, la ventilation, et le conditionnement d’air (CVC) ainsi que pour les équipements d’épuration
d’air dans les laboratoires. Les poussières d’essai utilisées pour l’évaluation de la performance d'efficacité ne
sont pas inclues.
This document defines the properties of load test dusts used for the heating, ventilation and air conditioning
(HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of
efficiency performance are not included.
2 Références normatives
Les documents suivants sont cités dans le texte de sort
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