Test method to measure the efficiency of air filtration media against spherical nanomaterials - Part 1: Size range from 20 nm to 500 nm (ISO 21083-1:2018)

This document specifies the testing instruments and procedure for determining the fractional filtration efficiencies of flat sheet filter medium against airborne nanoparticles in the range of 20 nm to 500 nm. The testing methods in this document are limited to spherical or nearly-spherical particles to avoid uncertainties due to the particle shape.

Prüfverfahren zur Messung der Effizienz von Luftfiltrationsmedien gegen sphärische Nanomaterialien - Teil 1: Partikelgrößenbereich von 20 nm bis 500 nm (ISO 21083-1:2018)

Dieses Dokument legt die Prüfinstrumente und Prüfverfahren für die Bestimmung des Filtrationswirkungsgrads von planen Filtermedien gegen Nanoschwebstoffpartikel im Größenbereich zwischen 20 nm und 500 nm fest. Die Prüfverfahren in diesem Dokument sind auf kugelförmige oder fast kugelförmige Partikel beschränkt, um Unsicherheiten aufgrund der Partikelform zu vermeiden.

Méthode d'essai pour mesurer l'efficacité des médias de filtration d'air par rapport aux nanomatériaux sphériques - Partie 1: Spectre granulométrique de 20 nm à 500 nm (ISO 21083-1:2018)

Le présent document spécifie les instruments et modes opératoires d'essai à utiliser pour la détermination des efficacités fractionnelles de filtration des médias filtrants plans par rapport à des nanoparticules en suspension dans l'air dans la plage granulométrique de 20 nm à 500 nm. Les méthodes d'essai décrites dans le présent document sont limitées aux particules sphériques ou quasi-sphériques afin d'éviter toute incertitude liée à la forme des particules.

Preskusna metoda za merjenje učinkovitosti sredstev za filtriranje zraka, ki vsebuje kroglaste nanomateriale - 1. del: Velikost od 20 nm do 500 nm (ISO 21083-1:2018)

Ta dokument določa preskusne instrumente in postopek za učinkovitost filtracije ploščatih filtrirnih medijev za filtriranje zraka, ki vsebuje kroglaste nanomateriale v obsegu 20–500 nm.

General Information

Status
Published
Publication Date
11-Dec-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
12-Dec-2018
Completion Date
12-Dec-2018

Buy Standard

Standard
EN ISO 21083-1:2019
English language
61 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 21083-1:2019
01-marec-2019
3UHVNXVQDPHWRGD]DPHUMHQMHXþLQNRYLWRVWLVUHGVWHY]DILOWULUDQMH]UDNDNL

YVHEXMHNURJODVWHQDQRPDWHULDOHGHO9HOLNRVWRGQPGRQP ,62


Test method to measure the efficiency of air filtration media against spherical
nanomaterials - Part 1: Size range from 20 nm to 500 nm (ISO 21083-1:2018)

Prüfverfahren zur Messung der Effizienz von Luftfiltrationsmedien gegen sphärische

Nanomaterialien - Teil 1: Partikelgrößenbereich von 20 nm bis 500 nm (ISO 21083-
1:2018)

Méthode d'essai pour mesurer l'efficacité des médias de filtration d'air par rapport aux

nanomatériaux sphériques - Partie 1: Spectre granulométrique de 20 nm à 500 nm (ISO

21083-1:2018)
Ta slovenski standard je istoveten z: EN ISO 21083-1:2018
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST EN ISO 21083-1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 21083-1:2019
---------------------- Page: 2 ----------------------
SIST EN ISO 21083-1:2019
EN ISO 21083-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 91.140.30
English Version
Test method to measure the efficiency of air filtration
media against spherical nanomaterials - Part 1: Size range
from 20 nm to 500 nm (ISO 21083-1:2018)

Méthode d'essai pour mesurer l'efficacité des médias Prüfverfahren zur Messung der Effizienz von

de filtration d'air par rapport aux nanomatériaux Luftfiltrationsmedien gegen sphärische

sphériques - Partie 1: Spectre granulométrique de 20 Nanomaterialien - Teil 1: Partikelgrößenbereich von

nm à 500 nm (ISO 21083-1:2018) 20 nm bis 500 nm (ISO 21083-1:2018)
This European Standard was approved by CEN on 19 November 2018.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21083-1:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 21083-1:2019
EN ISO 21083-1:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 21083-1:2019
EN ISO 21083-1:2018 (E)
European foreword

This document (EN ISO 21083-1:2018) 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 2019, and conflicting national standards shall be

withdrawn at the latest by June 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 21083-1:2018 has been approved by CEN as EN ISO 21083-1:2018 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 21083-1:2019
---------------------- Page: 6 ----------------------
SIST EN ISO 21083-1:2019
INTERNATIONAL ISO
STANDARD 21083-1
First edition
2018-11
Test method to measure the efficiency
of air filtration media against
spherical nanomaterials —
Part 1:
Size range from 20 nm to 500 nm
Méthode d'essai pour mesurer l'efficacité des médias de filtration
d'air par rapport aux nanomatériaux sphériques —
Partie 1: Spectre granulométrique de 20 nm à 500 nm
Reference number
ISO 21083-1:2018(E)
ISO 2018
---------------------- Page: 7 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions, symbols and abbreviated terms ....................................................................................................... 1

3.1 Terms and definitions ....................................................................................................................................................................... 1

3.2 Symbols and abbreviated terms............................................................................................................................................... 2

4 Principle ........................................................................................................................................................................................................................ 3

5 Test materials .......................................................................................................................................................................................................... 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Liquid phase aerosol .......................................................................................................................................................................... 4

5.2.1 DEHS test aerosol ............................................................................................................................................................ 4

5.2.2 Liquid phase aerosol generation ........................................................................................................................ 5

6 Test setup ..................................................................................................................................................................................................................... 6

6.1 General ........................................................................................................................................................................................................... 6

6.2 Specification of setup ........................................................................................................................................................................ 8

6.2.1 Aerosol generation system ...................................................................................................................................... 8

6.2.2 Tubing ....................................................................................................................................................................................... 8

6.2.3 Dryer........................................................................................................................................................................................... 8

6.2.4 DEMC .......................................................................................................................................................................................... 9

6.2.5 Equilibrium charge distribution and neutralization of aerosol particles ....................11

6.2.6 Neutralization of aerosol particles ................................................................................................................11

6.2.7 Make-up air line .............................................................................................................................................................12

6.2.8 Test filter medium mounting assembly .....................................................................................................13

6.2.9 CPC ............................................................................................................................................................................................14

6.2.10 Final filter ............................................................................................................................................................................16

6.3 Detailed setup for test using DEHS particles .............................................................................................................16

6.4 Determination of the filter medium velocity .............................................................................................................17

7 Qualification of the test rig and apparatus.............................................................................................................................17

7.1 CPC tests ....................................................................................................................................................................................................17

7.1.1 CPC — Air flow rate stability test ...................................................................................................................17

7.1.2 CPC — Zero test .............................................................................................................................................................18

7.1.3 CPC — Overload test ........................................................................................................................................... .......18

7.1.4 Counting accuracy calibration ...........................................................................................................................18

7.2 DEMC tests ...............................................................................................................................................................................................21

7.3 Qualification of aerosol neutralization ............................................................................................................................21

7.3.1 General...................................................................................................................................................................................21

7.3.2 Qualification of neutralization by checking the multiple charge fraction on

the particles passing through the neutralizer .....................................................................................21

7.3.3 Qualification of the aerosol neutralizer using corona discharge balanced

output .....................................................................................................................................................................................21

7.3.4 Qualification of neutralization according to ISO/TS 19713-1 ...............................................22

7.4 System leak checks ...........................................................................................................................................................................22

7.4.1 Air leakage tests ............................................................................................................................................................22

7.4.2 Visual detection by cold smoke ........................................................................................................................22

7.4.3 Pressurization of the test system ...................................................................................................................22

7.4.4 Use of high efficiency filter media ..................................................................................................................22

7.5 Uniformity of the test aerosol concentration.............................................................................................................22

8 Test procedure .....................................................................................................................................................................................................23

8.1 Determination of the correlation ratio/zero efficiency test .........................................................................23

8.2 Protocol of filtration efficiency measurement ..........................................................................................................24

© ISO 2018 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(E)

8.2.1 Preparatory checks .....................................................................................................................................................24

8.2.2 Equipment preparation ..........................................................................................................................................24

8.2.3 Aerosol generator ........................................................................................................................................................24

8.2.4 Aerosol generator — Neutralizer ...................................................................................................................25

8.2.5 Filter medium neutralization .............................................................................................................................26

8.2.6 Filter medium neutralization according to ISO 29461-1 ...........................................................26

8.2.7 Air flow measurement .............................................................................................................................................28

8.2.8 Measurement of the pressure drop ..............................................................................................................29

8.2.9 Zero count test ................................................................................................................................................................29

8.2.10 Air leakage test ...............................................................................................................................................................29

8.2.11 Loading effect test ........................................................................................................................................................29

8.2.12 Reported values .............................................................................................................................................................29

8.2.13 Measurement of filtration efficiency — DEHS particles .............................................................29

8.3 Test evaluation .....................................................................................................................................................................................31

8.4 Measurement protocol for one sample — Summary ..........................................................................................31

8.4.1 Using one CPC to measure the upstream and downstream particle

concentrations ................................................................................................................................................................31

8.4.2 Using two CPCs to measure the upstream and downstream particle

concentrations ................................................................................................................................................................32

9 Maintenance items ..........................................................................................................................................................................................33

10 Measurement uncertainties ..................................................................................................................................................................34

11 Reporting results ..............................................................................................................................................................................................35

11.1 General ........................................................................................................................................................................................................35

11.2 Required reporting elements ..................................................................................................................................................35

11.2.1 General...................................................................................................................................................................................35

11.2.2 Report summary ...........................................................................................................................................................35

11.2.3 Report Details ..................................................................................................................................................................36

Annex A (informative) Instruments specifications ............................................................................................................................40

Annex B (informative) Statistical analysis for precision of an experiment (according to

ISO 5725-2) .............................................................................................................................................................................................................44

Annex C (informative) Safe use of IPA ...............................................................................................................................................................49

Annex D (informative) Safe handling of radioactive devices ....................................................................................................50

Bibliography .............................................................................................................................................................................................................................51

iv © ISO 2018 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(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 the European Committee for Standardization (CEN) Technical

Committee CEN/TC 195, Air filters for general cleaning, in collaboration with ISO Technical Committee

TC 142, Cleaning equipment for air and other gases, in accordance with the Agreement on technical

cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 21083 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.
© ISO 2018 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(E)
Introduction

Nano-objects are discrete piece of material with one, two or three external dimensions in the nanoscale

(see ISO/TS 80004-2) and are building blocks of nanomaterials. Nanoparticles, referring to particles

with at least one dimension below 100 nm, generally have a higher mobility than larger particles.

Because of their higher mobility and larger specific surface area, available for surface chemical

reactions, they can pose a more serious health risk than larger particles. Thus, particulate air pollution

with large concentrations of nanoparticles can result in an increased adverse effect on human health

and an increased mortality (see Reference [17]).

With the increased focus on nanomaterials and nanoparticles, the filtration of airborne nanoparticles

is also subject to growing attention. Aerosol filtration can be used in diverse applications, such as air

pollution control, emission reduction, respiratory protection for human and processing of hazardous

materials. The filter efficiency can be determined by measuring the testing particle concentrations

upstream and downstream of the filter. The particle concentration may be based on mass, surface area

or number. Among these, the number concentration is the most sensitive parameter for nanoparticle

measurement. State-of-the-art instruments enable accurate measurement of the particle number

concentration in air and therefore precise fractional filtration efficiency. Understanding filtration

efficiency for nanoparticles is crucial in schemes to remove nanoparticles, and thus, in a wider context,

improve the general quality of the environment, including the working environment.

A large number of standards for testing air filters exist such as the ISO 29463 series and the ISO 16890

series. The test particle range in the ISO 29463 series is between 0,04 µm and 0,8 µm, and the focus is on

measurement of the minimum efficiency at the most penetrating particle size (MPPS). The test particle

range in the ISO 16890 series is between 0,3 µm and 10 µm. The ISO 21083 series aims to standardize

the methods of determining the efficiencies of filter media, of all classes, used in most common air

filtration products and it focuses on filtration efficiency of airborne nanoparticles, especially for

particle size down to single-digit nanometres.
vi © ISO 2018 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 21083-1:2019
INTERNATIONAL STANDARD ISO 21083-1:2018(E)
Test method to measure the efficiency of air filtration
media against spherical nanomaterials —
Part 1:
Size range from 20 nm to 500 nm
1 Scope

This document specifies the testing instruments and procedure for determining the fractional filtration

efficiencies of flat sheet filter medium against airborne nanoparticles in the range of 20 nm to 500 nm.

The testing methods in this document are limited to spherical or nearly-spherical particles to avoid

uncertainties due to the particle shape.
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 5167 (all parts), Measurement of fluid flow by means of pressure differential devices inserted in circular

cross-section conduits running full

ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method

for the determination of repeatability and reproducibility of a standard measurement method

ISO 15900, Determination of particle size distribution — Differential electrical mobility analysis for aerosol

particles

ISO 27891, Aerosol particle number concentration — Calibration of condensation particle counters

ISO 29463-1, High efficiency filters and filter media for removing particles from air — Part 1: Classification,

performance, testing and marking
ISO 29464, Cleaning of air and other gases — Terminology
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 5725-2, ISO 15900, ISO 27891

and ISO 29464 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
© ISO 2018 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 21083-1:2019
ISO 21083-1:2018(E)
3.2 Symbols and abbreviated terms
3.2.1 Symbols
Symbol Definition
A Source strength of the radioactive source
A Original source strength of the radioactive source
A Effective filtration surface area
C Particle concentration upstream of the filter medium

C Concentration of particles with the i monodisperse size upstream of the filter medium

up,i th
C Particle concentration downstream of the filter medium
down

C Concentration of particles with the i monodisperse size downstream of the filter medium

down,i th

C Concentration of particles after the second DEMC for the particles with i charge(s)

d Diameter of the initial droplet including the solvent
d Diameter of the testing particle after complete evaporation of the solvent
E Filtration eff
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.