SIST EN ISO 16890-3:2017

Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and the airflow resistance versus the mass of test dust captured (ISO 16890-3:2016)

This International Standard refers to particulate air filters for general ventilation having an initial efficiency of less than 99 % with respect to PM1 values as defined in ISO 16890-1 Air filters for general ventilation - Part 1: Technical specifications, requirements and efficiency classification system based upon Particulate Matter (PM). Filters used in the ventilation of low-rise residential buildings or in portable room-air cleaners are excluded from the scope of this standard. This International standard describes the procedure to determine the gravimetric efficiency and the resistance to airflow for a given air cleaning device. After determination of the initial particle removal efficiency and the conditioned particle removal efficiency, the filter element is loaded with synthetic dust until its final test pressure drop is reached. The pressure drop curve versus the dust loading is recorded during the course of dust loading to determine the test dust holding capacity. The performance results obtained in accordance with this series of standards cannot by themselves be quantitatively applied to predict performance in service with regard to efficiency and lifetime. Other factors influencing performance to be taken into account are described in Annex A (informative).

Luftfilter für die allgemeine Raumlufttechnik - Teil 3: Ermittlung des gravimetrischen Wirkungsgrades sowie des durchflusswiderstandes im Vergleich zu der aufgenommenen Masse von Prüfstaub (ISO 16890-3:2016)

Filtres à air pour ventilation générale - Partie 3: Détermination de l'efficacité gravimétrique et de la résistance à l'écoulement de l'air par rapport à la quantité de poussière retenue (ISO 16890-3:2016)

ISO 16890-3:2016 spécifie l'équipement d'essai et les méthodes d'essai utilisés pour mesurer l'efficacité gravimétrique et la résistance à l'écoulement de l'air d'un filtre à air de ventilation générale.
Elle est destinée à être utilisée conjointement avec l'ISO 16890‑1, ISO 16890‑2 et ISO 16890‑4.
La méthode d'essai décrite dans la présente partie de l'ISO 16890 est applicable pour des débits d'air compris entre 0,25 m3/s (900 m3/h, 530 ft3/min) et 1,5 m3/s (5 400 m3/h, 3 178 ft3/min), en se référant à un banc d'essai ayant une surface frontale nominale de 610 mm × 610 mm (24 inch × 24 inch).
L'ISO 16890 (toutes les parties) concerne les éléments filtrants de ventilation générale ayant une efficacité ePM1 inférieure ou égale à 99 % et une efficacité ePM10 supérieure à 20 %, lorsqu'ils sont soumis à essai selon les modes opératoires définis dans l'ISO 16890 (toutes les parties).
En dehors de ces fractions d'aérosol, les éléments filtrants sont évalués par d'autres méthodes d'essai applicables. Voir l'ISO 29463 (toutes les parties).
Les éléments filtrants utilisés dans les épurateurs d'air ambiant portatifs sont exclus du domaine d'application de la présente partie de l'ISO 16890.
Les résultats de performance obtenus conformément à l'ISO 16890 (toutes les parties) ne peuvent pas être utilisés quantitativement pour prédire les performances en service, en ce qui concerne l'efficacité et la durée de vie.

Zračni filtri pri splošnem prezračevanju - 3. del: Ugotavljanje gravimetrijske učinkovitosti in odpornosti pretoka zraka v odvisnosti od mase zajetega preskusnega prahu (ISO 16890-3:2016)

Ta evropski standard se uporablja za zračne filtre delcev za splošno prezračevanje, katerih začetna učinkovitost je manj kot 99 % glede na vrednosti PM1, ki so določene v standardu ISO 16890-1 Zračni filtri pri splošnem prezračevanju - 1. del: Tehnične specifikacije, zahteve in sistem razvrščanja učinkovitosti na podlagi trdnih delcev (PM). Filtri, ki se uporabljajo pri prezračevanju nizkih stanovanjskih stavb ali premični čistilniki zraka v prostorih so izključeni s področja uporabe tega standarda. Ta mednarodni standard opisuje postopek za določitev gravimetrične učinkovitosti in odpornosti pretoka zraka za dano napravo za čiščenje. V vložek filtra se po ugotovitvi začetne učinkovitosti odstranjevanja delcev in kondicionirane učinkovitosti odstranjevanja delcev nalaga sintetični prah, dokler se ne doseže končni padec tlaka v preskusu. Krivulja padca tlaka v primerjavi z nalaganjem prahu se zabeleži med nalaganjem prahu, s čimer se ugotovi zmogljivost zadrževanja prahu. Rezultatov glede zmogljivosti, pridobljenih v skladu s to serijo standardov, ni mogoče samih po sebi kvantitativno uporabiti za predvidevanje zmogljivosti med obratovanjem, in sicer v zvezi z učinkovitostjo in življenjsko dobo. Drugi dejavniki, ki vplivajo na zmogljivost in jih je treba upoštevati, so opisani v dodatku A (informativnem).

General Information

• Status: Published
• Public Enquiry End Date: 29-Jul-2015
• Publication Date: 15-Jan-2017
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Jan-2017
• Due Date: 16-Mar-2017
• Completion Date: 16-Jan-2017
• Ref Project: EN ISO 16890-3:2016 - Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured (ISO 16890-3:2016)

Relations

• Revised: SIST EN 779:2012 - Particulate air filters for general ventilation - Determination of the filtration performance
• Effective Date: 06-Jul-2016
• Revises: oSIST prEN ISO 16890-3:2023 - Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured (ISO/DIS 16890-3:2023)
• Effective Date: 18-Jan-2023
• Revised: oSIST prEN ISO 16890-3:2023 - Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured (ISO/DIS 16890-3:2023)
• Effective Date: 19-Jan-2023
• Replaced By: oSIST prEN ISO 16890-3:2023 - Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured (ISO/DIS 16890-3:2023)
• Effective Date: 26-May-2021
• Replaces: SIST EN 779:2012 - Particulate air filters for general ventilation - Determination of the filtration performance
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 16890-3:2017
01-marec-2017
1DGRPHãþD
SIST EN 779:2012
=UDþQLILOWULSULVSORãQHPSUH]UDþHYDQMXGHO8JRWDYOMDQMHJUDYLPHWULMVNH
XþLQNRYLWRVWLLQRGSRUQRVWLSUHWRND]UDNDYRGYLVQRVWLRGPDVH]DMHWHJD
SUHVNXVQHJDSUDKX,62
Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and
the airflow resistance versus the mass of test dust captured (ISO 16890-3:2016)
Luftfilter für die allgemeine Raumlufttechnik - Teil 3: Ermittlung des gravimetrischen
Wirkungsgrades sowie des durchflusswiderstandes im Vergleich zu der aufgenommenen
Masse von Prüfstaub (ISO 16890-3:2016)
Filtres à air pour ventilation générale - Partie 3: Détermination de l'efficacité
gravimétrique et de la résistance à l'écoulement de l'air par rapport à la quantité de
poussière retenue (ISO 16890-3:2016)
Ta slovenski standard je istoveten z: EN ISO 16890-3:2016
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST EN ISO 16890-3:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16890-3:2017

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SIST EN ISO 16890-3:2017


EN ISO 16890-3
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2016
EUROPÄISCHE NORM
ICS 91.140.30 Supersedes EN 779:2012
English Version

Air filters for general ventilation - Part 3: Determination of
the gravimetric efficiency and the air flow resistance
versus the mass of test dust captured (ISO 16890-3:2016)
Filtres à air de ventilation générale - Partie 3: Luftfilter für die allgemeine Raumlufttechnik - Teil 3:
Détermination de l'efficacité gravimétrique et de la Ermittlung des gravimetrischen Wirkungsgrades sowie
résistance à l'écoulement de l'air par rapport à la des durchflusswiderstandes im Vergleich zu der
quantité de poussière d'essai retenue (ISO 16890- aufgenommenen Masse von Prüfstaub (ISO 16890-
3:2016) 3:2016)
This European Standard was approved by CEN on 19 September 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16890-3:2016 E
worldwide for CEN national Members.

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SIST EN ISO 16890-3:2017
EN ISO 16890-3:2016 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 16890-3:2017
EN ISO 16890-3:2016 (E)
European foreword
This document (EN ISO 16890-3:2016) has been prepared by Technical Committee ISO/TC 142
"Cleaning equipment for air and other gases" in collaboration with Technical Committee CEN/TC 195
“Air filters for general air cleaning” the secretariat of which is held by UNI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2017, and conflicting national standards shall be
withdrawn at the latest by June 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 779:2012.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16890-3:2016 has been approved by CEN as EN ISO 16890-3:2016 without any
modification.

3

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SIST EN ISO 16890-3:2017

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SIST EN ISO 16890-3:2017
INTERNATIONAL ISO
STANDARD 16890-3
First edition
2016-12-01
Air filters for general ventilation —
Part 3:
Determination of the gravimetric
efficiency and the air flow resistance
versus the mass of test dust captured
Filtres à air de ventilation générale —
Partie 3: Détermination de l’efficacité gravimétrique et de la
résistance à l’écoulement de l’air par rapport à la quantité de
poussière d’essai retenue
Reference number
ISO 16890-3:2016(E)
©
ISO 2016

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Air flow and resistance . 2
3.2 Test device . 2
3.3 Gravimetric efficiency . 3
3.4 Other terms . 4
4 Symbols and abbreviated terms . 4
5 General test device requirements . 5
5.1 Test device requirements . 5
5.2 Test device preparation . 5
6 Loading dust . 6
7 Test equipment. 6
8 Qualification of test rig and apparatus . 9
8.1 Schedule of qualification testing requirements . 9
8.2 Dust feeder air flow rate . 9
8.3 Final filter efficiency qualification test .10
9 Test sequence dust-loading procedure .10
9.1 Test procedure for the filter .10
9.1.1 Preparation of the test device .10
9.1.2 Initial resistance to air flow .10
9.2 Dust loading .10
9.2.1 Dust loading procedure . .10
9.2.2 Arrestance .11
9.2.3 Test dust capacity .12
10 Reporting results .12
10.1 General .12
10.2 Required reporting elements .12
10.2.1 Report values .12
10.2.2 Report summary .12
10.2.3 Report details .14
Annex A (informative) Resistance to air flow calculation.19
Bibliography .21
© ISO 2016 – All rights reserved iii

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(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 on 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 the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 142, Cleaning equipment for air and other gases.
This first edition of ISO 16890-3, together with ISO 16890-1, ISO 16890-2 and ISO 16890-4, cancels and
replaces ISO/TS 21220:2009, which has been technically revised.
ISO 16890 consists of the following parts, under the general title Air filters for general ventilation:
— Part 1: Technical specifications, requirements and classification system based upon particulate matter
efficiency (ePM)
— Part 2: Measurement of fractional efficiency and air flow resistance
— Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test
dust captured
— Part 4: Conditioning method to determine the minimum fractional test efficiency
iv © ISO 2016 – All rights reserved

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

Introduction
The effects of particulate matter (PM) on human health have been extensively studied in the past
decades. The results are that fine dust can be a serious health hazard, contributing to or even causing
respiratory and cardiovascular diseases. Different classes of particulate matter can be defined according
to the particle size range. The most important ones are PM , PM and PM . The U.S. Environmental
10 2,5 1
Protection Agency (EPA), the World Health Organization (WHO) and the European Union define
PM as particulate matter which passes through a size-selective inlet with a 50 % efficiency cut-off
10
at 10 µm aerodynamic diameter. PM and PM are similarly defined. However, this definition is not
2,5 1
precise if there is no further characterization of the sampling method and the sampling inlet with a
clearly defined separation curve. In Europe, the reference method for the sampling and measurement
of PM is described in EN 12341. The measurement principle is based on the collection on a filter of the
10
PM fraction of ambient particulate matter and the gravimetric mass determination (see EU Council
10
Directive 1999/30/EC of 22 April 1999).
As the precise definition of PM , PM and PM is quite complex and not simple to measure, public
10 2,5 1
authorities, like the U.S. EPA or the German Federal Environmental Agency (Umweltbundesamt),
increasingly use in their publications the more simple denotation of PM as being the particle size
10
fraction less or equal to 10 µm. Since this deviation to the above mentioned complex “official” definition
does not have a significant impact on a filter element’s particle removal efficiency, the ISO 16890 series
refers to this simplified definition of PM , PM and PM .
10 2,5 1
Particulate matter in the context of the ISO 16890 series describes a size fraction of the natural aerosol
(liquid and solid particles) suspended in ambient air. The symbol ePM describes the efficiency of an air
x
cleaning device to particles with an optical diameter between 0,3 µm and x µm. The following particle
size ranges are used in the ISO 16890 series for the listed efficiency values.
Table 1 — Optical particle diameter size ranges for the definition of the efficiencies, ePM
x
Efficiency Size range, µm
ePM 0,3 ≤ × ≤10
10
ePM 0,3 ≤ × ≤2,5
2,5
ePM 0,3 ≤ × ≤1
1
Air filters for general ventilation are widely used in heating, ventilation and air-conditioning applications
of buildings. In this application, air filters significantly influence the indoor air quality and, hence, the
health of people, by reducing the concentration of particulate matter. To enable design engineers and
maintenance personnel to choose the correct filter types, there is an interest from international trade
and manufacturing for a well-defined, common method of testing and classifying air filters according
to their particle efficiencies, especially with respect to the removal of particulate matter. Current
regional standards are applying totally different testing and classification methods, which do not allow
any comparison with each other, and thus hinder global trade with common products. Additionally,
the current industry standards have known limitations by generating results which often are far away
from filter performance in service, i.e. overstating the particle removal efficiency of many products.
With this new ISO 16890 series, a completely new approach for a classification system is adopted, which
gives better and more meaningful results compared to the existing standards.
The ISO 16890 series describes the equipment, materials, technical specifications, requirements,
qualifications and procedures to produce the laboratory performance data and efficiency classification
based upon the measured fractional efficiency converted into a particulate matter efficiency (ePM)
reporting system.
Air filter elements according to the ISO 16890 series are evaluated in the laboratory by their ability to
remove aerosol particulate expressed as the efficiency values ePM , ePM and ePM The air filter
1 2,5 10.
elements can then be classified according to the procedures defined in ISO 16890-1. The particulate
removal efficiency of the filter element is measured as a function of the particle size in the range of
0,3 μm to 10 µm of the unloaded and unconditioned filter element as per the procedures defined in
ISO 16890-2. After the initial particulate removal efficiency testing, the air filter element is conditioned
© ISO 2016 – All rights reserved v

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

according to the procedures defined in ISO 16890-4 and the particulate removal efficiency is repeated
on the conditioned filter element. This is done to provide information about the intensity of any
electrostatic removal mechanism which may or may not be present with the filter element for test.
The average efficiency of the filter is determined by calculating the mean between the initial efficiency
and the conditioned efficiency for each size range. The average efficiency is used to calculate the ePM
x
efficiencies by weighting these values to the standardized and normalized particle size distribution of
the related ambient aerosol fraction. When comparing filters tested in accordance with the ISO 16890
series, the fractional efficiency values shall always be compared among the same ePM class (ex. ePM
x 1
of filter A with ePM of filter B). The test dust capacity and the initial arrestance of a filter element are
1
determined as per the test procedures defined in this part of ISO 16890.
vi © ISO 2016 – All rights reserved

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SIST EN ISO 16890-3:2017
INTERNATIONAL STANDARD ISO 16890-3:2016(E)
Air filters for general ventilation —
Part 3:
Determination of the gravimetric efficiency and the air
flow resistance versus the mass of test dust captured
1 Scope
This part of ISO 16890 specifies the test equipment and the test methods used for measuring the
gravimetric efficiency and resistance to air flow of air filter for general ventilation.
It is intended for use in conjunction with ISO 16890-1, ISO 16890-2 and ISO 16890-4.
3
The test method described in this part of ISO 16890 is applicable for air flow rates between 0,25 m /s
3 3 3 3 3
(900 m /h, 530 ft /min) and 1,5 m /s (5 400 m /h, 3 178 ft /min), referring to a test rig with a nominal
face area of 610 mm × 610 mm (24 in × 24 in).
ISO 16890 (all parts) refers to particulate air filter elements for general ventilation having an ePM
1
efficiency less than or equal to 99 % and an ePM efficiency greater than 20 % when tested as per the
10
procedures defined within ISO 16890 (all parts).
Air filter elements outside of this aerosol fraction are evaluated by other applicable test methods. See
ISO 29463 (all parts).
Filter elements used in portable room-air cleaners are excluded from the scope of this part of ISO 16890.
The performance results obtained in accordance with ISO 16890 (all parts) cannot by themselves be
quantitatively applied to predict performance in service with regard to efficiency and lifetime.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 15957, Test dusts for evaluating air cleaning equipment
ISO 16890-1, Air filters for general ventilation — Part 1: Technical specifications, requirements and
classification system based upon particulate matter efficiency (ePM)
ISO 16890-2:2016, Air filters for general ventilation — Part 2: Measurement of fractional efficiency and
resistance to air flow
ISO 16890-4, Air filters for general ventilation — Part 4: Conditioning method to determine the minimum
fractional test efficiency
ISO 29463-1, High-efficiency filters and filter media for removing particles in air — Part 1: Classification,
performance testing and marking
ISO 29464, Cleaning equipment for air and other gases — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 29464 and the following apply.
© ISO 2016 – All rights reserved 1

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

3.1 Air flow and resistance
3.1.1
air flow rate
volume of air passing through the filter per unit time
3.1.2
nominal air volume flow rate
air flow rate (3.1.1) specified by the manufacturer
3.1.3
filter face velocity
air flow rate (3.1.1) divided by the face area
Note 1 to entry: Filter face velocity is expressed in m/s.
3.1.4
resistance to air flow
difference in pressure between two points in an air flow system at specified conditions, especially
when measured across the filter element (3.2.2)
Note 1 to entry: Resistance to air flow is measured in Pa.
3.1.5
recommended final resistance to air flow
maximum operating resistance to air flow (3.1.4) of the filter as recommended by the manufacturer
Note 1 to entry: Recommended final resistance to air flow is measured in Pa.
3.1.6
final resistance to air flow
resistance to air flow (3.1.4) up to which the filtration performance is measured to determine the
average arrestance (3.3.3) and test dust capacity (3.3.4)
Note 1 to entry: Final differential pressure to air flow is measured in Pa.
3.1.7
initial resistance to air flow
resistance to air flow (3.1.4) of the clean filter operating at its test air flow rate (3.1.1)
Note 1 to entry: Initial resistance to air flow is measured in Pa.
3.1.8
test air
air to be used for testing purposes
3.2 Test device
3.2.1
test device
filter element (3.2.2) to be tested
3.2.2
filter element
structure made of the filtering material, its supports and its interfaces with the filter housing
3.2.3
upstream
U/S
region in a process system traversed by a flowing fluid before it enters that part of the test device (3.2.1)
2 © ISO 2016 – All rights reserved

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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

3.2.4
downstream
D/S
area or region into which fluid flows on leaving the test device (3.2.1)
3.2.5
coarse filter
filtration device with particle removal efficiency <50 % in the PM particle range
10
3.2.6
fine filter
filtration device with particle removal efficiency ≥50 % in the PM particle range
10
3.2.7
final filter
air filter used to collect the loading dust (3.3.5) passing through or shedding from the filter under test
3.2.8
effective filter media area
area of the media contained in the filter and effectively passed by air during operation
2
Note 1 to entry: Effective filter media area is expressed in m .
3.2.9
filter media velocity
air flow rate (3.1.1) divided by the effective filter media area (3.2.8)
Note 1 to entry: Filter media velocity is expressed in m/s to an accuracy of three significant figures.
3.3 Gravimetric efficiency
3.3.1
arrestance
measure of the ability of a filter to remove a standard test dust from the air passing through it, under
given operating conditions
Note 1 to entry: Arrestance is expressed as a weight percentage.
3.3.2
initial arrestance
value of arrestance (3.3.1) determined after the first loading cycle in a filter test
Note 1 to entry: Initial arrestance is expressed as a weight percentage.
3.3.3
average arrestance
ratio of the total amount of loading dust (3.3.5) retained by the filter to the total amount of dust fed up
to final test pressure differential
3.3.4
test dust capacity
amount of loading dust (3.3.5) retained by the filter up to final pressure differential
Note 1 to entry: Test dust capacity is expressed in grams.
3.3.5
loading dust
synthetic dust formulated specifically for determination of the test dust capacity (3.3.4) and arrestance
(3.3.1) of air filters
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SIST EN ISO 16890-3:2017
ISO 16890-3:2016(E)

3.3.6
particle size
geometric diameter (equivalent spherical, optical or aerodynamic, depending on context) of the
particles of an aerosol
3.4 Other terms
3.4.1
HEPA filter
filters with performance complying with requirements of filter class ISO 35H – ISO 45H as per
ISO 29463-1
3.4.2
reference device
primary device possessing accurately known parameters used as a standard for calibrating
secondary devices
3.4.3
filter face area
area of the inside section of the test duct immediately upstream (3.2.3) of the filter under test
2
Note 1 to entry: Nominal values 0,61 m × 0,61 m = 0,37 m .
4 Symbols and abbreviated terms
A Arrestance, %
A Arrestance in loading phase “j”, %
j
A Average arrestance during test to final resistance to air flow, %
m
M Mass of dust fed to the filter during loading phase “j”, g
j
mean Mean value
m Dust in duct after filter, g
d
m Mass of dust passing the filter at the dust loading phase “j”, g
j
m Cumulative mass of dust fed t
...

SLOVENSKI STANDARD
oSIST prEN ISO 16890-3:2015
01-julij-2015
=UDþQLILOWULSULVSORãQHPSUH]UDþHYDQMXGHO8JRWDYOMDQMHJUDYLPHWULMVNH
XþLQNRYLWRVWLLQRGSRUQRVWLSUHWRND]UDNDYRGYLVQRVWLRGPDVH]DMHWHJD
SUHVNXVQHJDSUDKX,62',6
Air filters for general ventilation - Part 3: Determination of the gravimetric efficiency and
the airflow resistance versus the mass of test dust captured
Luftfilter für die allgemeine Raumlufttechnik - Teil 3: Ermittlung des gravimetrischen
Wirkungsgrades sowie des durchflusswiderstandes im Vergleich zu der aufgenommenen
Masse von Prüfstaub
Filtres à air pour ventilation générale - Partie 3: Détermination de l'efficacité
gravimétrique et de la résistance à l'écoulement de l'air par rapport à la quantité de
poussière retenue
Ta slovenski standard je istoveten z: prEN ISO 16890-3
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning
oSIST prEN ISO 16890-3:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 16890-3:2015

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oSIST prEN ISO 16890-3:2015
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16890-3
ISO/TC 142 Secretariat: UNI
Voting begins on: Voting terminates on:
2015-05-14 2015-08-14
Air filters for general ventilation —
Part 3:
Determination of the gravimetric efficiency and the air
flow resistance versus the mass of test dust captured
Filtres à air pour ventilation générale —
Partie 3: Détermination de l’efficacité gravimétrique et de la résistance à l’écoulement de l’air par rapport
à la quantité de poussière
ICS: 91.140.30
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
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 16890-3:2015(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 2015

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oSIST prEN ISO 16890-3:2015
ISO/DIS 16890-3:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved

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oSIST prEN ISO 16890-3:2015
ISO/DIS 16890-3:2015(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols (and abbreviated terms) . 5
5 General Test Device requirements . 6
5.1 Test Device requirements . 6
5.2 Test Device Preparation . 6
6 Testing Materials . 7
6.1 Loading Dust . 7
7 Test equipment. 7
7.1 Test rig . 7
7.1.1 Upstream mixing orifice . 7
7.1.2 Liquid Aerosol testing devices . 7
7.1.3 Dust feeder . 7
7.1.4 Final Filter .10
8 Qualification of test rig and apparatus .10
8.1 Schedule of qualification testing requirements .10
8.2 Dust feeder air flow rate .10
9 Test Sequence Dust-Loading Procedure.11
9.1 Test procedure for the filter .11
9.1.1 Preparation of filter to be tested .11
9.1.2 Initial resistance to airflow .11
9.2 Dust loading .11
9.2.1 Dust loading procedure . .11
9.2.2 Arrestance .12
9.2.3 Test dust capacity .13
10 Reporting Results .13
10.1 General .13
10.2 Required reporting elements .13
10.2.1 Report values .13
10.2.2 Report Summary .13
10.2.3 Report Details .15
Annex A (informative) Airflow resistance Calculation.20
Bibliography .22
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oSIST prEN ISO 16890-3:2015
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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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
ISO 16890-3 was prepared by Technical Committee ISO/TC 142, Air filters for general ventilation.
ISO 16890 (all parts) replaces ISO/TS 21220:2009.
ISO 16890 consists of the following parts, under the general title Air filters for general ventilation:
— Part 1: Technical specifications, requirements and efficiency classification system based upon
Particulate Matter (PM)
— Part 2: Measurement of fractional efficiency and air flow resistance
— Part 3: Determination of the gravimetric efficiency and the airflow resistance versus the mass of test
dust captured
— Part 4: Conditioning method to determine the minimum fractional test efficiency
iv © ISO 2015 – All rights reserved

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Introduction
The effects of particulate matter (PM) on human health have been extensively studied in the past decades.
The results are that fine dust can be a serious health hazard, contributing to or even causing respiratory
and cardiovascular diseases. Different classes of particulate matter can be defined according to the
particle size range. The most important ones are PM10, PM2,5 and PM1. The U.S. Environmental
Protection Agency (EPA), the World Health Organization (WHO) or the European Union define PM10
as particulate matter which passes through a size-selective inlet with a 50% efficiency cut-off at 10 μm
aerodynamic diameter. PM2,5 and PM1 are similarly defined. However, this definition is not precise
as long as there are no further definition of the sampling method and the sampling inlet with a clearly
defined separation curve. In Europe, the reference method for the sampling and measurement of PM10
is that described in EN 12341 “Air Quality – Field Test Procedure to Demonstrate Reference Equivalence
of Sampling Methods for the PM10 fraction of particulate matter”. The measurement principle is based
on the collection on a filter of the PM10 fraction of ambient particulate matter and the gravimetric mass
determination (see EU Council Directive 1999/30/EC of 22 April 1999).
As the precise definition of PM10, PM2,5 and PM1 is quite complex and not simple to measure, public
authorities, like e.g. the US EPA or the German Federal Environmental Agency (Umweltbundesamt),
increasingly use in their publications the more simple denotation of PM10 as being the particle size fraction
less or equal to 10 μm. Since this deviation to the above mentioned complex “official” definition does not
have a significant impact on a filter elements particle removal efficiency as reported by ISO 16890, this
simplified definition of PM10, PM2,5 and PM1 will be utilized within ISO 16890 documents.
Particulate Matter in the context of this standard describes a size fraction of the natural aerosol (liquid
and solid particles) suspended in ambient air, with the symbol PMx where x defines the size range of the
aerodynamic diameter ≤ x μm. The following particle size fractions are used in this standard:
Fraction Size range
PM ≤ 10 μm
10
PM ≤ 2,5 μm
2,5
PM ≤ 1 μm
1
Air filters used for general ventilation are widely used in heating, ventilation and air-conditioning
applications of buildings. In this application they significantly influence the indoor air quality, and hence,
the health of people, by reducing the concentration of particulate matter. To enable design engineers and
maintenance personnel to choose the correct filter types, there is an interest from international trade
and manufacturing for a well-defined, common method of testing and classifying air filters properly
according to their particle efficiencies, especially with respect to the removal of particulate matter.
Current regional standards are applying totally different testing and classification methods, which do not
allow any comparison to each other, and hence, hinder global trade with common products. Additionally,
the current standards have known limitations and generate results which are sometimes far away
from filter performance in service. With this new international standard, a completely new approach
for a classification system is adopted, which gives better and more meaningful results compared to
the existing standards. Additionally, this new approach shall overcome major concerns related to the
former approach of ISO/TS 21220.
ISO 16890 (all parts) describes the equipment, materials, technical specifications, requirements,
qualifications, and procedures to produce the laboratory performance data and efficiency classification
based upon the measured fractional efficiency converted into a Particulate Matter (PM) reporting system.
Air filter elements according to this series of standards are evaluated in the laboratory by their ability
to remove aerosol particulate to PM , PM and PM10 aerosol fractions and then the air filter elements
1 2,5
can be classified per the procedures defined in part 1. The particulate removal efficiency of the filter
element is measured as a function of the particle size in the range of 0,3 to 10 μm of the unloaded
and unconditioned filter element per the procedures defined in part 2. The air filter element is then
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ISO/DIS 16890-3:2015(E)

conditioned per the procedures defined in part 4 and the particulate removal efficiency is repeated on
the conditioned filter element. This is done to provide information about the intensity of any electrostatic
removal mechanism which may or may not be present with the filter element for test. The results from
this second particle collection efficiency step are used to shift the fractional efficiency curve of the
filter element to be used to calculate the average efficiency in each of the PM , PM and PM ranges
1 2,5 10
by weighting the fractional efficiency values according to the standardized and normalized particle size
distribution of the related fraction of the ambient aerosol.
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oSIST prEN ISO 16890-3:2015
DRAFT INTERNATIONAL STANDARD ISO/DIS 16890-3:2015(E)
Air filters for general ventilation —
Part 3:
Determination of the gravimetric efficiency and the air
flow resistance versus the mass of test dust captured
1 Scope
This part of ISO 16890 specifies the test equipment and the test methods used for measuring the
gravimetric efficiency and air flow resistance of air filter for general ventilation.
It is intended for use in conjunction with ISO 16890-1, ISO 16890-2 and ISO 16890-4.
3 3
The test method described in this standard is applicable for air flow rates between 0,25 m /s (900 m /h,
3 3 3 3
530 ft /min) and 1,5 m /s (5400 m /h, 3178 ft /min), referring to a test rig with a nominal face area of
610 mm x 610 mm (24 inch x 24 inch).
ISO 16890 (all parts) refers to particulate air filter elements for general ventilation having an initial
efficiency less than or equal to 99 % with respect to PM aerosol fraction and greater than 20 % with
1
respect to PM aerosol fraction when tested per the procedures defined within parts 1-4 of ISO 16890.
10
Air filter elements outside of this aerosol fraction are evaluated by other applicable test methods, (see
ISO 29463, part 1-5).
Filter elements used in portable room-air cleaners are excluded from the scope of this standard.
The performance results obtained in accordance with this series of standards cannot by themselves be
quantitatively applied to predict performance in service with regard to efficiency and lifetime.
2 Normative references
The following referenced documents are indispensable for the application 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/DIS 16890-1, Air filters for general ventilation — Part 1: Technical specifications, requirements and
efficiency classification system based upon Particulate Matter (PM)
ISO/DIS 16890-2, Air filters for general ventilation — Part 2: Measurement of fractional efficiency and air
flow resistance
ISO/DIS 16890-4, Air filters for general ventilation — Part 4: Conditioning method to determine the
minimum fractional test efficiency
EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices — Part 1: Orifice plates,
nozzles and Venturi tubes inserted in circular cross-section conduits running full (ISO 5167-1:1991).
ISO 2854, Statistical interpretation of data — Techniques of estimation and tests relating to means and variances.
ISO 12103-1, Road vehicles — Test dust for filter evaluation — Part 1: Arizona test dust.
ISO 14644-3, Cleanrooms and associated controlled environments — Part 3: Test methods.
EN ISO 15957, Test dusts for evaluating air cleaning equipment.
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ISO 29463, High-efficiency filters and filter media for removing particles in air
ISO 29494, Cleaning equipment for air and other gases — Terminology
3 Terms and definitions
For the purposes of this document the terms and definitions given in ISO 29464 and the following apply:
3.1 Air flow and resistance
3.1.1
air flow rate
volume of air passing through the filter per unit time
[SOURCE: ISO 29464:2011; 3.2.38]
3.1.2
nominal air flow rate
air flow rate specified by the manufacturer
3.1.3
face velocity
air flow rate divided by the face area (expressed in m/s)
3.1.4
resistance to airflow
difference in pressure between two points in an airflow system at specified conditions, especially when
measured across the filter element
3.1.5
recommended final differential pressure
maximum operating differential pressure of the filter as recommended by the manufacturer
(expressed in Pa)
[SOURCE: ISO 29464:2011; 3.1.139]
3.1.6
final differential pressure
differential pressure up to which the filtration performance is measured for classification purposes
(expressed in Pa)
[SOURCE: ISO 29464:2011; 3.1.138]
3.1.7
initial differential pressure
differential pressure of the clean filter operating at its test air flow rate (expressed in Pa).
[SOURCE: ISO 29464:2011; 3.1.140]
3.1.8
test air
air to be used for testing purposes.
3.2 Test device
3.2.1
test device
filter element to be tested per this standard
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3.2.2
filter element
filtering material in a preformed shape being a part of a complete filter
[SOURCE: ISO 29464:2011; 3.1.67]
3.2.3
upstream, U/S
direction opposite to the flow
[SOURCE: ISO 29464:2011; 3.1.157]
3.2.4
downstream, D/S
area following the filter in the direction of fluid flow
[SOURCE: ISO 29464:2011; 3.2.28]
3.2.5
charged filter
filter in which the filter medium is electrostatically charged or polarized
[SOURCE: ISO 29464:2011; 3.1.75]
3.2.6
coarse filter
a filtration device with particle removal efficiency < 50 % in the PM particle range
10
3.2.7
fine filter
a filtration device with particle removal efficiency ≥ 50 % in the PM particle range
10
3.2.8
final filter
air filter used to collect the loading dust passing through or shedding from the filter under test
[SOURCE: ISO 29464:2011; 3.1.86]
3.2.9
effective filter media area
area of the media contained in the filter (without adhesive spaces or ligament) and passed by air during
2
operation (expressed in m ).
[SOURCE: ISO 29464:2011; 3.1.11]
3.2.10
media velocity
air flow rate divided by the effective filter media area (expressed in m/s to an accuracy of three
significant figures).
3.3 gravimetric efficiency
3.3.1
arrestance
measure of the ability of a filter to remove a standard test dust from the air passing through it, under
given operating conditions.
Note 1 to entry: This measure is expressed as a weight percentage.
[SOURCE: ISO 29464:2011; 3.1.14]
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3.3.2
initial arrestance
value of arrestance determined after the first loading cycle in a filter test expressed as a weight percentage
[SOURCE: ISO 29464:2011; 3.1.16]
3.3.3
average arrestance
ratio of the total amount of loading dust retained by the filter to the total amount of dust fed up to final
test pressure differential.
[SOURCE: ISO 29464:2011; 3.1.15]
3.3.4
dust holding capacity
DHC
amount of loading dust retained by the filter up to final pressure differential (expressed in grams)
[SOURCE: ISO 29464:2011; 3.1.19]
3.3.5
loading dust
synthetic dust formulated specifically for determination of the test dust capacity and arrestance of air filters
[SOURCE: ISO 29464:2011; 3.1.54]
3.3.6
particle size
geometric diameter (equivalent spherical, optical or aerodynamic, depending on context) of the particles
of an aerosol.
[SOURCE: ISO 29464:2011; 3.1.126]
3.6 Other terms
3.6.1
HEPA filter
filters with performance complying with requirements of filter class ISO 35:— ISO 45 as per ISO 29463-1
[SOURCE: ISO 29464:2011; 3.1.88]
3.6.2
reference device
primary device possessing accurately known parameters used as a standard for calibrating
secondary devices
[SOURCE: ISO 29464:2011; 3.1.39]
3.6.3
face area
area of the inside section of the test duct immediately upstream of the filter under test (nominal values
2
0,61 m × 0,61 m = 0,37 m )
3.6.4
re-entrainment
release to the air flow of particles previously collected on the filter
[SOURCE: ISO 29464:2011; 3.1.142]
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3.6.5
shedding
release to the air flow of particles due to particle bounce and re-entrainment effects and to the release
of fibres or particulate matter from the filter or filtering material
[SOURCE: ISO 29464:2011; 3.1.150]
3.6.6
particle bounce
behaviour of particles that impinge on the filter without being retained
[SOURCE: ISO 29464:2011; 3.1.121]
4 Symbols (and abbreviated terms)
A Arrestance
A Arrestance in loading phase ”j”, %
j
A Average arrestance during test to final pressure drop, %
m
DHC Dust holding capacity, g
M Mass of dust fed to the filter during loading phase ”j”, g
j
mean Mean value
m Dust in duct after filter, g
d
m Mass of dust passing the filter at the dust loading phase ”j”, g
j
m Cumulative mass of dust fed to filter, g
tot
m Mass of final filter before dust increment, g
1
m Mass of final filter after dust increment, g
2
p Pressure, Pa
p Absolute air pressure upstream of filter, kPa
a
p Air flow meter static pressure, kPa
sf
q Mass flow rate at air flow meter, kg/s
m
3
q Air flow rate at filter, m /s
V
3
q Air flow rate at air flow meter, m /s
Vf
t Temperature upstream of filter, ºC
t Temperature at air flow meter, ºC
f
δ Standard deviation
ν Number of degrees of freedom
3
ρ Air density of air, kg/m
φ Relative humidity upstream of filter, %
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Δm Dust increment, g
Δm Mass gain of final filter, g
ff
Δp Filter pressure drop, Pa
Δp Air flow meter differential pressure, Pa
f
3
Δp Filter pressure drop at air density 1,20 kg/m , Pa
1,20
ANSI American National Standards Institute
ASHRAE American Society of Heating, Refrigerating and Air Conditioning Engineers
ASTM American Society for Testing and Materials
CEN European Committee for Standardisation
EN European Norm
EUROVENT European Committee of Air Handling and Refrigeration Equipment Manufacturers
ISO International Standards Organisation
5 General Test Device requirements
5.1 Test Device requirements
The test device shall be designed or marked so as to prevent incorrect mounting. The test device shall
be designed so that when correctly mounted in the ventilation duct, no air/dust leaks occur around the
exterior filter frame and the duct sealing surfaces.
The complete test device (test device and frame) shall be made of material suitable to withstand normal
usage and exposure to the range of temperature, humidity and corrosive environments likely to be
encountered in service.
The complete test device shall be designed so that it will withstand mechanical constraints that are
likely to be encountered during normal use. Dust or fibre released from the test device media by air flow
through the test device shall not constitute a hazard or nuisance for the people (or devices) exposed to
filtered air.
5.2 Test Device Preparation
The test device shall be mounted in accordance with the manufacturer’s recommendations and after
equilibration with the test air weighed to the nearest gram. Devices requiring external accessor
...