Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetration

This European Standard specifies the procedure for testing particle filter penetration for respiratory protective devices.

Atemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung des Durchlasses von Partikelfiltern

Dieses Dokument legt das Verfahren zum Prüfen des Durchlasses von Partikelfiltern für Atemschutzgeräte fest.

Appareils de protection respiratoire - Méthodes d'essai - Partie 7: Détermination de la pénétration des filtres à particules

Le présent document spécifie le mode opératoire utilisé pour vérifier la pénétration des filtres à particules pour appareils de protection respiratoire.

Oprema za varovanje dihal - Metode preskušanja - 7. del: Ugotavljanje penetracije delcev skozi filter

Ta evropski standard določa postopek za preskušanje penetracije delcev skozi filter pri opremi za varovanje dihal.

General Information

Status
Published
Publication Date
18-Jun-2019
Withdrawal Date
30-Dec-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
19-Jun-2019
Due Date
03-Oct-2019
Completion Date
19-Jun-2019

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SLOVENSKI STANDARD
01-oktober-2019
Nadomešča:
SIST EN 13274-7:2008
Oprema za varovanje dihal - Metode preskušanja - 7. del: Ugotavljanje penetracije
delcev skozi filter
Respiratory protective devices - Methods of test - Part 7: Determination of particle filter
penetration
Atemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung des Durchlasses von
Partikelfiltern
Appareils de protection respiratoire - Méthodes d'essai - Partie 7: Détermination de la
pénétration des filtres à particules
Ta slovenski standard je istoveten z: EN 13274-7:2019
ICS:
13.340.30 Varovalne dihalne naprave Respiratory protective
devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13274-7
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 13.340.30 Supersedes EN 13274-7:2008
English Version
Respiratory protective devices - Methods of test - Part 7:
Determination of particle filter penetration
Appareils de protection respiratoire - Méthodes d'essai Atemschutzgeräte - Prüfverfahren - Teil 7:
- Partie 7: Détermination de la pénétration des filtres à Bestimmung des Durchlasses von Partikelfiltern
particules
This European Standard was approved by CEN on 5 May 2019.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13274-7:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Pre-requisites . 5
5 Test requirements . 6
5.1 General . 6
5.2 Nominal values and tolerances . 6
5.3 Penetration test . 6
5.4 Exposure test . 6
5.5 Storage test . 7
6 Sodium chloride test method . 7
6.1 Principle . 7
6.2 Test equipment . 7
6.3 Procedure. 8
6.4 Calculation of the penetration . 9
7 Paraffin oil test method . 9
7.1 Principle . 9
7.2 Test equipment . 9
7.3 Procedure. 10
7.4 Calculation of the penetration . 11
Bibliography . 12

European foreword
This document (EN 13274-7:2019) has been prepared by Technical Committee CEN/TC 79 “Respiratory
protection devices”, the secretariat of which is held by DIN.
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 month year of December 2019, and conflicting national
standards shall be withdrawn at the latest by month year of December 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 supersedes EN 13274-7:2008.
The following main technical changes have been made compared to EN 13274-7:2008:
a) reference to EN 13274-5 in storage test (5.5) deleted;
b) test equipment for sodium chloride test and test conditions clarified and summarized in one
subclause;
c) procedure for sodium chloride test revised;
d) calculation of the penetration for sodium chloride revised;
e) test equipment for paraffin oil test and test conditions clarified and summarized in one subclause:
f) procedure for paraffin oil test revised;
g) figures adapted to the changes made in the test procedures, where appropriate.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Introduction
This document is intended as a supplement to the specific device standards for respiratory protective
devices. Test methods are specified for complete or parts of devices. If deviations from the test method
given in this document are necessary, these deviations will be specified in the relevant device standard.
1 Scope
This document specifies the procedure for testing particle filter penetration for respiratory protective
devices.
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.
EN 132, Respiratory protective devices - Definitions of terms and pictograms
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 132 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Pre-requisites
In order to implement this document, at least the following parameters need to be specified in the
appropriate device standard:
— items to be tested;
— number of samples;
— test method(s);
— flow rate through the filter;
— sequence of conditioning phases, where more than one is required;
— specification of any observations to be carried out;
— sample preparation and orientation;
— sample holding;
— in the case of the exposure test, the specified mass of test aerosol;
— pass/fail criteria;
— any deviations from this method.
5 Test requirements
5.1 General
Two test aerosols are used for measurement of filter penetration:
a) Sodium Chloride, using the equipment specified in Clause 6;
b) Paraffin Oil, using the equipment specified in Clause 7.
The test aerosol is fed into the test chamber, where the particle filtering device under test is mounted in
a leaktight manner on a suitable adaptor. Aerosol is passed through the device and the aerosol
concentration is measured immediately before and after the particle filtering device by the photometer.
Laboratories should give consideration to the following factors.
— Test chamber should be designed to minimize air velocity variations across the surface of the filter
under test.
— Localized high air velocity (“jets”) can result in artificially high filter penetration.
5.2 Nominal values and tolerances
Unless otherwise specified, the values stated in this European Standard are expressed as nominal
values. Except for temperature limits, values which are not stated as maxima or minima shall be subject
to a tolerance of ±5 %. Unless otherwise specified the ambient temperature for testing shall be in the
range between 16 °C and 32 °C with a relative humidity of (50 ± 30) % and the temperature limits shall
be subject to an accuracy of ±1 °C.
For each of the required measurements performed in accordance with this standard, a corresponding
estimate of the uncertainty of measurement should be evaluated [1].
This estimate of uncertainty should be applied and stated when reporting test results, in order to enable
the user of the test report to assess the reliability of the result.
5.3 Penetration test
The measurement of penetration, in accordance with 5.1, shall be taken as the average over a time of

+3
30 s, beginning 3 min after the start of the test.


5.4 Exposure test
Penetration shall be recorded throughout the test at sample intervals not exceeding 5 min.
Continuous recording of penetration is recommended.
For particle filtering devices being tested using paraffin oil, continue the test until the particle filtering
device has been exposed to the specified mass of the test aerosol as defined in the appropriate device
standard.
For particle filtering devices being tested using sodium chloride, continue the test until the particle
filtering device has been exposed to the specified mass of the test aerosol as defined in the appropriate
device standard, unless:
a) for single shift use particle filtering devices, the penetration shows continued decline for 5 min or
5 sample intervals, whichever is the greater;
b) for re-useable particle filtering devices, the penetration shows continued decline for 5 min or
5 sample intervals, whichever is the greater, and the maximum penetration is lower than when
tested using paraffin oil test aerosol.
If these conditions are met, the exposure test may be terminated early.
Report the maximum penetration during exposure.
5.5 Storage test
For re-useable particle filtering devices the storage test shall be performed immediately after the
completion of the exposure test.
Remove the particle filtering device from the penetration test chamber and store the particle filtering
device for a duration of (24 ± 1) h under ambient conditions as specified in 5.2, ensuring that particle
filtering devices are not in contact with each other.
The particle filtering device shall not be removed from the suitable adaptor if this can result in damage
to the device.
After storage, immediately repeat the penetration test in accordance with 5.3.
6 Sodium chloride test method
6.1 Principle
An aerosol of sodium chloride particles is generated by atomising an aqueous solution of the salt and
evaporating the water. The concentration of this aerosol is measured before and after the filter under
test by means of flame photometry. Determinations shall be possible in the range < 0,001 % to 100 %
filter penetration.
6.2 Test equipment
The apparatus is shown schematically in Figure 1. The test apparatus consis
...

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