kSIST FprEN ISO 10121-3:2022
(Main)Test methods for assessing the performance of gas-phase air cleaning media and devices for general ventilation - Part 3: Classification system for GPACDs applied to treatment of outdoor air (ISO/FDIS 10121-3:2022)
Test methods for assessing the performance of gas-phase air cleaning media and devices for general ventilation - Part 3: Classification system for GPACDs applied to treatment of outdoor air (ISO/FDIS 10121-3:2022)
This part of ISO 10121 establishes a classification system for GPACD’s supplying make-up air to
general ventilation systems using outdoor air polluted by local urban sources and/or long-distance
pollution. The classification system is intended to aid in assessing molecular pollution besides the
particulate pollution dealt with by ISO 16890-1.
Methode zur Leistungsermittlung von Medien und Vorrichtungen zur Reinigung der Gasphase für die allgemeine Lüftung - Teil 3: Klassifizierungssystem für die Behandlung von Außenluft (ISO/FDIS 10121-3:2022)
Dieser Teil von ISO 10121 erstellt ein Klassifizierungssystem für GPACD, die Außenluft in einem Durchgang an allgemeine Belüftungssysteme unter Verwendung von durch lokale urbane Quellen und/oder Verschmutzung aus großer Entfernung verschmutzte Außenluft liefern. Zweck des Klassifizierungssystems ist es, die Beurteilung der molekularen Verschmutzung zusätzlich zu der in ISO 16890 1 behandelten Partikelverschmutzung zu unterstützen.
Die gewählten normativen Schmutzstoffe sind Ozon, Schwefeldioxid, Stickstoffdioxid und Toluol aufgrund ihrer Relevanz für den bestimmungsgemäßen Gebrauch. Jedem Schmutzstoff werden drei Beanspruchungsgrade zugewiesen, die den üblichen Leistungsbereich der für die Anwendung vorgesehenen Vorrichtungen wiedergeben. Die Beanspruchungsgrade sind mit der benötigten Leistung verbunden, aber die Verbindung einer spezifischen Beanspruchungsgradanforderung mit einer bestimmten Orts- oder Stadtgröße liegt außerhalb des Anwendungsbereichs dieser Klassifizierung. Der zu behandelnde Luftströmungstyp ist Außenluft zu Gebäuden, d. h. eine Filtration von einem riesigen Außenluftempfänger mit gekannten, relativ stabilen Konzentrationen, auch wenn die Konzentration täglich und jährlich variieren kann, und/oder lokal erhöhten Konzentrationen aufgrund von Hauptverkehrsstraßen. Die Prüfung erfolgt nach Abschnitt 5, Abschnitt 6 und ISO 10121 2.
Die Klassifizierung wird als integrierte Reinigungsleistung für den höchsten Beanspruchungsgrad, der der Vorrichtung zugewiesen werden kann, ausgedrückt. Jedem der vier normativen Schmutzstoffe wird eine separate Klasse zugewiesen. Da die Auswahl der normativen Schmutzstoffe und der Beanspruchungsgrade spezifisch ist und nur für den bestimmungsgemäßen Gebrauch gilt, sind alle anderen Anwendungen ausgeschlossen. Insbesondere sind GPACD in Rezirkulationsanwendungen und/oder die Verschmutzung aus Innenraumschmutzstoffen handhaben sowie pharmazeutische, mikroelektronische, nukleare, Heimatschutz- und militärische Anwendungen ausdrücklich ausgeschlossen.
Méthodes d’essai pour l’évaluation de la performance des médias et des dispositifs de filtration moléculaire pour la ventilation générale - Partie 3: Système de classification pour les GPACD appliqués au traitement de l’air extérieur (ISO/FDIS 10121-3:2022)
Le présent document établit un système de classification pour les GPACD fournissant de l’air extérieur en passage unique à des systèmes de ventilation générale utilisant de l’air extérieur pollué par des sources urbaines locales et/ou une pollution à longue distance. Le système de classification est destiné à aider pour l’évaluation de la contamination moléculaire en plus de la contamination particulaire traitée par l’ISO 16890-1.
Le présent document spécifie quatre polluants de référence, c’est-à-dire l’ozone, le dioxyde de soufre, le dioxyde d’azote et le toluène, utilisés pour la classification du fait de leur pertinence pour l’application prévue. Le présent document spécifie trois niveaux de service qui sont assignés pour chaque polluant reflétant la plage de performance typique des dispositifs prévus pour l’application. Puisque le choix des polluants de référence et des niveaux de service est spécifique et unique pour l’application prévue, toutes autres applications sont exclues. En particulier, le présent document ne s’applique pas aux GPACD dans les applications de recirculation et/ou le traitement de la pollution provenant de sources intérieures ainsi que les applications pharmaceutiques, microélectroniques, nucléaires, de sécurité intérieure et militaires.
Preskusna metoda za ocenjevanje zmogljivosti sredstev in naprav za čiščenje plinske faze za splošno prezračevanje - 3. del: Sistem klasifikacije za GPACD, ki se uporablja za obdelavo zraka na prostem (ISO/FDIS 10121-3:2022)
General Information
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN ISO 10121-3:2021
01-julij-2021
Preskusna metoda za ocenjevanje zmogljivosti sredstev in naprav za čiščenje
plinske faze za splošno prezračevanje - 3. del: Sistem klasifikacije za GPACD, ki se
uporablja za obdelavo zraka na prostem (ISO/DIS 10121-3:2021)Test methods for assessing the performance of gas-phase air cleaning media and
devices for general ventilation - Part 3: Classification system for GPACDs applied to
treatment of outdoor air (ISO/DIS 10121-3:2021)Methode zur Leistungsermittlung von Medien und Vorrichtungen zur Reinigung der
Gasphase für die allgemeine Lüftung - Teil 3: Klassifizierungssystem für die Behandlung
von Außenluft (ISO/DIS 10121-3:2021)Méthodes d’essai pour l’évaluation de la performance des médias et des dispositifs de
filtration moléculaire pour la ventilation générale - Partie 3: Système de classification
pour les GPACD appliqués au traitement de l’air extérieur (ISO/DIS 10121-3:2021)Ta slovenski standard je istoveten z: prEN ISO 10121-3
ICS:
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
oSIST prEN ISO 10121-3:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 10121-3:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10121-3
ISO/TC 142 Secretariat: UNI
Voting begins on: Voting terminates on:
2021-05-05 2021-07-28
Test methods for assessing the performance of gas-phase
air cleaning media and devices for general ventilation —
Part 3:
Classification system for GPACDs applied to treatment of
outdoor air
ICS: 91.140.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 10121-3:2021(E)
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 SUPPORTING DOCUMENTATION. ISO 2021
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
ISO/DIS 10121-3:2021(E)
Contents
Foreword ................................................................................................................................................................ iv
Introduction ........................................................................................................................................................... v
1 Scope ................................................................................................................................................................. 1
2 Normative references ................................................................................................................................. 1
3 Terms and definitions ................................................................................................................................ 1
4 Symbols and abbreviated terms ............................................................................................................. 6
4.1 Symbols............................................................................................................................................................ 6
4.2 Abbreviated terms ....................................................................................................................................... 7
5 Classification system for outdoor air .................................................................................................... 7
5.1 General ............................................................................................................................................................. 7
5.2 Test setup and normative test parameters ........................................................................................ 7
5.3 Initial removal efficiency .......................................................................................................................... 8
5.4 Dose concept .................................................................................................................................................. 8
5.5 Classes, duty levels & dose ........................................................................................................................ 9
5.6 Normative pollutants and concentrations .......................................................................................... 9
5.7 Integrated removal efficiency .............................................................................................................. 10
5.8 Classification example graph ................................................................................................................ 10
5.9 Desorption and retentivity .................................................................................................................... 12
6 Classification test sequence .................................................................................................................. 12
6.1 General .......................................................................................................................................................... 12
6.2 Conditioning ............................................................................................................................................... 12
6.3 Initial removal efficiency ....................................................................................................................... 12
6.4 Capacity determination expressed as E [%] vs D [g/m ] ......................................................... 13
C N6.4.1 Zero to LD .............................................................................................................................................. 13
6.4.2 Check E at LD ....................................................................................................................................... 13
6.4.3 LD to MD ................................................................................................................................................. 13
6.4.4 MD to HD and HD ................................................................................................................................ 13
6.5 Retentivity ................................................................................................................................................... 13
6.6 Premature Stop .......................................................................................................................................... 13
7 Classification system ............................................................................................................................... 14
7.1 General .......................................................................................................................................................... 14
7.2 Reporting of the LD, MD and HD dose values .................................................................................. 14
7.3 Classification example ............................................................................................................................ 14
8 Report ........................................................................................................................................................... 16
8.1 General .......................................................................................................................................................... 16
8.2 Test report layout ..................................................................................................................................... 16
Annex A (informative) Information about environment pollutant concentration .................. 21
COPYRIGHT PROTECTED DOCUMENTA.1 Pollutant concentration in outdoor air ............................................................................................. 21
© ISO 2021Bibliography ....................................................................................................................................................... 23
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
Contents
Foreword ................................................................................................................................................................ iv
Introduction ........................................................................................................................................................... v
1 Scope ................................................................................................................................................................. 1
2 Normative references ................................................................................................................................. 1
3 Terms and definitions ................................................................................................................................ 1
4 Symbols and abbreviated terms ............................................................................................................. 6
4.1 Symbols............................................................................................................................................................ 6
4.2 Abbreviated terms ....................................................................................................................................... 7
5 Classification system for outdoor air .................................................................................................... 7
5.1 General ............................................................................................................................................................. 7
5.2 Test setup and normative test parameters ........................................................................................ 7
5.3 Initial removal efficiency .......................................................................................................................... 8
5.4 Dose concept .................................................................................................................................................. 8
5.5 Classes, duty levels & dose ........................................................................................................................ 9
5.6 Normative pollutants and concentrations .......................................................................................... 9
5.7 Integrated removal efficiency .............................................................................................................. 10
5.8 Classification example graph ................................................................................................................ 10
5.9 Desorption and retentivity .................................................................................................................... 12
6 Classification test sequence .................................................................................................................. 12
6.1 General .......................................................................................................................................................... 12
6.2 Conditioning ............................................................................................................................................... 12
6.3 Initial removal efficiency ....................................................................................................................... 12
6.4 Capacity determination expressed as E [%] vs D [g/m ] ......................................................... 13
C N6.4.1 Zero to LD .............................................................................................................................................. 13
6.4.2 Check E at LD ....................................................................................................................................... 13
6.4.3 LD to MD ................................................................................................................................................. 13
6.4.4 MD to HD and HD ................................................................................................................................ 13
6.5 Retentivity ................................................................................................................................................... 13
6.6 Premature Stop .......................................................................................................................................... 13
7 Classification system ............................................................................................................................... 14
7.1 General .......................................................................................................................................................... 14
7.2 Reporting of the LD, MD and HD dose values .................................................................................. 14
7.3 Classification example ............................................................................................................................ 14
8 Report ........................................................................................................................................................... 16
8.1 General .......................................................................................................................................................... 16
8.2 Test report layout ..................................................................................................................................... 16
Annex A (informative) Information about environment pollutant concentration .................. 21
A.1 Pollutant concentration in outdoor air ............................................................................................. 21
Bibliography ....................................................................................................................................................... 23
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
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 documents 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).Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).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.A list of all parts in the ISO 10121 series can be found on the ISO website.
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 2021 – All rights reserved
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
Introduction
There is an increasing use and need for gas-phase filtration in general filtration applications. This demand
can be expected to increase rapidly due to the increasing gaseous pollution problems in the world
together with an increasing awareness that solutions to the problems are available in the form of
filtration devices or, phrased more technically, gas-phase air cleaning devices (GPACD). The performance
of devices relies to a large extent on the performance of a gas-phase air cleaning media (GPACM)
incorporated in the device. Still applications and device performance are often poorly understood by the
users and suppliers of such media and devices. Media tests may also be adequate to offer data for real
applications if actual low concentrations (< 100 ppb) and longer exposure times (>weeks) can be used in
the test, provided that the geometrical configuration, packing density and flow conditions of the small-
scale test specimen are equal to those used in the real applications. Such tests are however not included
in the scope of ISO 10121.ISO 10121 parts 1 and 2 aim to provide laboratory test methods for GPACM and GPACD respectively.
From the tests and reports produced a person skilled in the field of molecular filtration can evaluate the
performance of different products as well as comparing performance by benchmark tests for specific
applications. However, to make these evaluations a basic knowledge in chemistry, molecular filtration
and the application at hand are necessary.Today, not only persons skilled in molecular filtration face challenges with increasing pollution. Annex A
shows annual average concentration of selected outdoor pollutants, the concentration differences of
different urban and industrial settings as well as an example of ambient air quality guidelines. The air
quality guideline is from Malaysia, but most countries have similar national threshold values. Due to this
increasing pollution in urban areas any building owner, facility management engineer, design engineers
or maintenance personnel needs to be able to evaluate GPACD’s for general ventilation in buildings.
Different standards classifying air filters for particle filtration e.g. ASHRAE 52.2, and ISO 16890 have
together with many national standards made a vast difference in assisting selection of air filters for
particle filtration for general ventilation in buildings. Such standards classifying molecular filtration
devices i.e. GPACD’s have to this date not been available. Part three of this series addresses the specific
case of outdoor air to buildings in cities and aim to be used in parallel with ISO 16890-1.
ISO 10121 consists of three parts:— ISO 10121-1 covers three different media configurations and is targeted towards giving a standardized
interface between media suppliers and producers of air cleaning devices. It may also be used between
media suppliers and end customers with regards to loose fill media properties.— ISO 10121-2 aims to give a standardized interface between suppliers of air cleaning devices and end
customers seeking the most cost-efficient way to employ gas-phase filtration.—ISO 10121-3 provides a classification system for the specific application of GPACD’s to general
ventilation of outdoor air polluted by local urban sources and/or long-distance pollution.
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oSIST prEN ISO 10121-3:2021
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
Test methods for assessing the performance of gas-phase air
cleaning media and devices for general ventilation — Part 3:
Classification system for GPACD’s applied to treatment of make-up
air
1 Scope
This part of ISO 10121 establishes a classification system for GPACDs supplying single pass outdoor air
to general ventilation systems using outdoor air polluted by local urban sources and/or long-distance
pollution. The classification system is intended to aid in assessing molecular pollution in addition to the
particulate pollution dealt with by ISO 16890-1.The selected normative pollutants are ozone, sulphur dioxide, nitrogen dioxide and toluene due to their
relevance to the intended application. Three duty levels are assigned for each pollutant reflecting the
typical performance range of devices intended for the application. The duty levels are related to the
performance needed, but it is not in the scope of this classification to relate a specific duty level need to a
certain place or city size. The air flow type to be covered is outdoor air to buildings i.e. a one pass filtration
from a vast outdoor recipient of known fairly stable concentrations even if the concentration may have
daily and yearly variations and/or local increased concentrations due to main traffic routes. The testing
is performed according to clause 5, clause 6 and ISO 10121-2.The classification is expressed as an integrated removal efficiency for the highest duty level that the
device may be awarded. A separate class is given for each of the four normative pollutants. Since selection
of normative pollutants and duty levels are specific and unique to the intended application, all other
applications are excluded. In particular, GPACDs in recirculation applications and/or dealing with
pollution from indoor sources as well as pharmaceutical, microelectronic, nuclear, homeland security and
military applications are specifically excluded.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 10121-2, Test methods for assessing the performance of gas-phase air cleaning media and devices for
general ventilation — Part 2: Gas-phase air cleaning devices (GPACD)ISO 16890-1, Air filters for general ventilation - Part 1: Technical specifications, requirements and
classification system based upon particulate matter efficiency (ePM)3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 29464 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp© ISO 2021 – All rights reserved 1
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
— IEC Electropedia: available at http://www.electropedia.org/
3.1
adsorption
process in which the molecules of a gas or vapour adhere by physical or chemical processes to the
exposed surface of solid substances, both the outer surface and inner pore surface, with which they come
into contact[Source: ISO 29464:2017; 3.5.7]
3.2
adsorbate
molecular compound in gaseous or vapour phase that may be retained by an adsorbent (3.3) medium
[Source: ISO 29464:2017; 3.5.3]3.3adsorbent
material having the ability to retain gaseous or vapour contaminants on its surface by physical or
chemical processes[Source: ISO 29464:2017; 3.5.3]
3.4
ambient pressure
absolute barometric pressure immediately outside the test rig
[Source: ISO 29464:2017; 3.5.50, modified]
3.5
adsorbate capacity
maximum amount (mass or moles) of a selected adsorbate (3.2) that can be contained in GAPC medium
or device under given test conditions, and a specific end point (termination time)
Note 1 to entry: Capacity can also be negative during desorption (3.11).[Source: ISO 29464:2017; 3.5.12]
3.6
challenge air stream
test contaminant(s) (3.10) of interest diluted to the specified concentration(s) of the test prior to
filtration[Source: ISO 29464:2017; 3.5.13]
3.7
challenge concentration
concentration of the test contaminant(s) (3.10) of interest in the air stream prior to filtration (challenge
air stream (3.6))[Source: ISO 29464:2017; 3.5.14]
3.8
challenge compound
chemical compound that is being used as the contaminant (3.10) of interest for any given test
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
[Source: ISO 29464:2017; 3.5.15]
3.9
concentration
quantity of one substance dispersed in a defined amount of another
Note 1 to entry: Indices “n” denote location.
[Source: ISO 29464:2017; 3.1.7, modified - Cn and note 1 to entry have been added]
3.10contaminant
substance (solid, liquid or gas) that negatively affects the intended use of a fluid
[Source: ISO 29464:2017; 3.1.8]3.11
desorption
process in which adsorbate (3.2) molecules leave the surface of the adsorbent and re-enter the air stream
Note 1 to entry: Desorption is the opposite of adsorption.[Source: ISO 29464:2017; 3.5.21]
3.12
downstream
area or region into which fluid flows on leaving the GPACD
[Source: ISO 29464:2017; 3.1.11, modified – GPACD is used instead of test device]
3.13Normative Dose
dose [mass/GPACD face area] that reaches a GPACD calculated from air flow in [volume/time], time,
pollution concentration [mass /volume] and GPACD face area3.14
efficiency vs. capacity curve
plot of the GPACD removal efficiency (3.30) against the integrated capacity over the duration of a
challenge test for a particular challenge concentration (3.7) and airflow[Source: ISO 29464:2017; 3.5.22]
3.15
efficiency vs. time curve
plot of the GPACD removal efficiency (3.30) against time over the duration of a challenge test for a
particular challenge concentration (3.7) and airflow[Source: ISO 29464:2017; 3.5.23]
3.16
face velocity
volumetric air flow rate divided by the nominal GPACD face area
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oSIST prEN ISO 10121-3:2021
ISO/DIS 10121-3:2021(E)
Note 1 to entry: GPACD face velocity is expressed in m/s.
[Source: ISO 29464:2017; 3.1.15, modified – GPACD face area is used instead of filter face area]
3.17gas
substance whose vapour pressure is greater than the ambient pressure (3.4) at ambient temperature
[Source: ISO 29464:2017; 3.1.28]3.18
gas-phase air cleaning device
GPACD
assembly of a fixed size enabling the removal of specific gas- or vapour-phase contaminants
Note 1 to entry: It is normally box shaped or fits into a box of dimensions between 290 × 290 × 290 mm
up to approximately 610 × 610 × 610 mm or 2 × 2 × 2 feet.[Source: ISO 29464:2017; 3.5.32, modified – Note has been modified.]
3.19
GPACD face area
nominal cross-sectional area of the GPACD
Note 1 to entry: For the purpose of standardizing measurements, the nominal area is calculated using
610 x 610 mm for a full size filter, 610 x 305 mm for a half size filter and 305 x 305 mm for a quarter size
filter.3.20
heavy-duty
corresponds to a removal efficiency versus dose performance for a GPACD that is used in challenging
environments e.g. heavily polluted environments.3.21
initial efficiency
removal efficiency of an unexposed filter or GPACD calculated as soon as possible after the start of a test
Note 1 to entry: For gas-phase, this should be calculated as soon as a steady reading can be obtained.
3.22integrated removal efficiency
the numerically integrated fraction or percentage of a challenge contaminant that is removed by a GPACD
over a specified time or dose...
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