SIST EN ISO 15025:2017
(Main)Protective clothing - Protection against flame - Method of test for limited flame spread (ISO 15025:2016)
Protective clothing - Protection against flame - Method of test for limited flame spread (ISO 15025:2016)
This document specifies two procedures (surface ignition and bottom-edge ignition) for determining
flame spread properties of vertically oriented flexible materials in the form of single or multicomponent
fabrics (coated, quilted, multilayered, sandwich constructions and similar combinations), when
subjected to a small defined flame. This test standard does not apply to situations where there is
restricted air supply or exposure to large sources of intense heat, for which other test methods are
more appropriate.
This test method is not appropriate for materials that demonstrate extensive melting or shrinkage.
Schutzkleidung - Schutz gegen Flammen - Prüfverfahren für die begrenzte Flammenausbildung (ISO 15025:2016)
Dieses Dokument legt zwei Verfahren (Oberflächenbeflammung und Beflammung der unteren Kante) zur Bestimmung des Ausbreitungsverhaltens einer Flamme auf vertikal ausgerichteten Textilien und industriellen Produkten in Form von Ein- oder Mehrkomponententextilien (beschichteten, gesteppten, mehrlagigen, Sandwich-Verbindungen und ähnlichen Kombinationen) fest, wenn sie einer kleinen definierten Flamme ausgesetzt werden. Die Ergebnisse gelten nicht für Situationen mit beschränkter Luftzufuhr oder bei denen große Hitze herrscht.
Dieses Prüfverfahren ist nicht für Materialien geeignet, die in ausgedehntem Maße schmelzen oder schrumpfen.
Vêtements de protection - Protection contre les flammes - Méthode d'essai pour la propagation de flamme limitée (ISO 15025:2016)
ISO 15025:2016 spécifie deux méthodes (allumage par la surface et allumage par le bord inférieur) pour déterminer les propriétés de propagation de la flamme des matériaux flexibles orientés verticalement par rapport à une flamme définie de petite taille; il peut s'agir d'étoffes simples ou multiples (textiles enduits, matelassé, multicouches, en sandwich et autres structures). Cette norme d'essai ne s'applique pas aux situations avec apport d'air réduit ou d'exposition à des sources importantes de chaleur intense, pour lesquelles les méthodes d'essai sont plus appropriées.
Cette méthode d'essai n'est pas adaptée aux matériaux qui présentent une fusion ou une rétraction importante.
Varovalna obleka - Zaščita pred učinki plamena - Preskusna metoda z omejenim širjenjem plamena (ISO 15025:2016)
Ta dokument navaja dva postopka (površinski vžig in vžig pri spodnjem robu) za določanje lastnosti širjenja plamena pri navpičnih gibkih materialih v obliki enojnih ali večkomponentnih tkanin (obloženih, prešitih, večplastnih, s konstrukcijo »sendvič« in podobne kombinacije), ki so izpostavljene manjšemu določenemu plamenu. Ta preskusni standard se ne uporablja v primerih, kadar je omejen dotok zraka ali pri izpostavljenosti večjim virom visokih temperatur, za katere so bolj primerne druge preskusne metode.
Ta preskusna metoda ni primerna za materiale, ki se intenzivno talijo ali krčijo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15025:2017
01-marec-2017
1DGRPHãþD
SIST EN ISO 15025:2003
9DURYDOQDREOHND=DãþLWDSUHGXþLQNLSODPHQD3UHVNXVQDPHWRGD]RPHMHQLP
ãLUMHQMHPSODPHQD ,62
Protective clothing - Protection against flame - Method of test for limited flame spread
(ISO 15025:2016)
Schutzkleidung - Schutz gegen Flammen - Prüfverfahren für die begrenzte
Flammenausbildung (ISO 15025:2016)
Vêtements de protection - Protection contre les flammes - Méthode d'essai pour la
propagation de flamme limitée (ISO 15025:2016)
Ta slovenski standard je istoveten z: EN ISO 15025:2016
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
13.340.10 Varovalna obleka Protective clothing
SIST EN ISO 15025:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 15025:2017
---------------------- Page: 2 ----------------------
SIST EN ISO 15025:2017
EN ISO 15025
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2016
EUROPÄISCHE NORM
ICS 13.220.40; 13.340.10 Supersedes EN ISO 15025:2002
English Version
Protective clothing - Protection against flame - Method of
test for limited flame spread (ISO 15025:2016)
Vêtements de protection - Protection contre les Schutzkleidung - Schutz gegen Flammen -
flammes - Méthode d'essai pour la propagation de Prüfverfahren für die begrenzte Flammenausbildung
flamme limitée (ISO 15025:2016) (ISO 15025:2016)
This European Standard was approved by CEN on 21 November 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 15025:2016 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 15025:2017
EN ISO 15025:2016 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 89/686/EEC . 4
2
---------------------- Page: 4 ----------------------
SIST EN ISO 15025:2017
EN ISO 15025:2016 (E)
European foreword
This document (EN ISO 15025:2016) has been prepared by Technical Committee ISO/TC 94 "Personal
safety - Protective clothing and equipment" in collaboration with Technical Committee CEN/TC 162
“Protective clothing including hand and arm protection and lifejackets” 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 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 ISO 15025:2002.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
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 15025:2016 has been approved by CEN as EN ISO 15025:2016 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 15025:2017
EN ISO 15025:2016 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 89/686/EEC
This European Standard has been prepared under a Commission’s standardization request M/031 to
provide one voluntary means of conforming to essential requirements of Directive 89/686/EEC on the
approximation of the laws of the Member States relating to personal protective equipment.
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex II of the Directive
89/686/EEC Personal Protective Equipment
Essential Requirements of Directive Clause(s)/sub-clause(s) of Remarks/Notes
89/686/EEC this EN
Protection against heat and/or fire Complete standard Together with the
requirements in the product
3.6.1 PPE constituent materials and other
standard
components
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
4
---------------------- Page: 6 ----------------------
SIST EN ISO 15025:2017
INTERNATIONAL ISO
STANDARD 15025
Second edition
2016-12-01
Protective clothing — Protection
against flame — Method of test for
limited flame spread
Vêtements de protection — Protection contre les flammes — Méthode
d’essai pour la propagation de flamme limitée
Reference number
ISO 15025:2016(E)
©
ISO 2016
---------------------- Page: 7 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(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. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Health and safety of test operators . 3
6 Fuel . 3
7 Apparatus . 3
8 Sampling and sample preparation .10
8.1 Sampling .10
8.1.1 Number of specimens .10
8.1.2 Specimen-holder pin location marks .10
8.1.3 Test specimen size .10
8.1.4 Multilayer specimens (including trim) .11
8.1.5 Seams .11
8.2 Conditioning atmosphere of the test sample .11
9 Procedure.11
9.1 Installation of the test apparatus .11
9.1.1 Test conditions.11
9.1.2 Procedure A — Surface ignition .12
9.1.3 Procedure B — Bottom-edge ignition .12
9.1.4 Detection of flaming debris .13
9.2 Test procedure .13
9.2.1 Procedure A — Surface ignition .13
9.2.2 Procedure B — Bottom-edge ignition .14
10 Test report .14
Annex A (normative) Description and construction of the burner .16
Annex B (informative) Laboratory techniques .17
Annex C (normative) Measurement of damaged/char length .18
Annex D (informative) Precision and results of interlaboratory trials .19
Bibliography .21
© ISO 2016 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(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 94, Personal safety — Protective clothing and
equipment, Subcommittee SC 13, Protective clothing.
This second edition cancels and replaces the first edition (ISO 15025:2000), of which all clauses, several
figures and Annex C have been technically revised. A new Clause 8 on sampling and sample preparation
has been added. A new Annex D on precision has been added.
To improve precision, the following major modifications have been made from the first edition:
a) the width of the specimen for Procedure B has been changed from 160 mm to 80 mm;
b) the gas used has been limited to commercial grade propane;
c) definitions of several reported observations have been added or revised;
d) more detailed instructions for preparing hemmed specimens, multilayer specimens and seamed
specimens have been added.
iv © ISO 2016 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
Introduction
The first edition of this document was initially prepared by ISO/TC 38/SC 19 as part of the revision of
ISO 6940 and ISO 6941. This specific work item was transferred to Technical Committee ISO/TC 94/SC 13
in April 1997.
This method of test is closely related to the method of test specified in ISO 6941. It uses the same basic
equipment but narrower specimen holders and templates for one procedure. Materials which do not
burn to the upper or vertical edges of the test specimen used in this test may be classified as producing
limited flame spread.
This method assesses the properties of textile fabrics in response to a short contact with a small
igniting flame under controlled conditions.
The influence of seams on the behaviour of fabrics can be determined by this method, the seam being
positioned within the test specimen so as to be subjected to the test flame.
Whenever practicable, trimmings should be tested as part of the fabric assembly on which they are or
will be used.
A list of standards related to this document is given in the Bibliography.
© ISO 2016 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 15025:2017
---------------------- Page: 12 ----------------------
SIST EN ISO 15025:2017
INTERNATIONAL STANDARD ISO 15025:2016(E)
Protective clothing — Protection against flame — Method
of test for limited flame spread
1 Scope
This document specifies two procedures (surface ignition and bottom-edge ignition) for determining
flame spread properties of vertically oriented flexible materials in the form of single or multicomponent
fabrics (coated, quilted, multilayered, sandwich constructions and similar combinations), when
subjected to a small defined flame. This test standard does not apply to situations where there is
restricted air supply or exposure to large sources of intense heat, for which other test methods are
more appropriate.
This test method is not appropriate for materials that demonstrate extensive melting or shrinkage.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 11610 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
3.1
afterflame time
duration of flaming after removal of ignition source
Note 1 to entry: It is also defined as the length of time for which a material continues to flame under the specified
test conditions, after the ignition source has been removed
Note 2 to entry: Afterflame time is measured and reported to the nearest second.
3.2
afterglow
persistence of glowing combustion of a material (3.10) under specified test conditions, after cessation
of afterflaming or, if no afterflaming occurs, after removal of the ignition source
Note 1 to entry: Afterglow is a continuation of combustion with the evolution of heat and light but without
flame. Some materials absorb heat during the flame application and continue to emit this absorbed heat inside
the charred area after removal of the igniting flame. This glowing inside the charred area without combustion
should not be recorded as afterglow.
3.3
afterglow time
duration of afterglow (3.2)
Note 1 to entry: It is also defined as the time for which a glowing combustion continues, under specified test
conditions after cessation of afterflaming or, if no afterflaming occurs, after removal of the ignition source
Note 2 to entry: Afterglow time is measured and reported to the nearest second.
© ISO 2016 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
3.4
char
formation of a carbonaceous brittle residue when material (3.10) is exposed to thermal energy
3.5
damaged length
length of the break in the tested material (3.10) after folding it lengthwise and creasing by hand along a
line through the highest peak of the charred areas and subsequent tearing
3.6
debris
material (3.10) separating from the specimen during the test procedure and falling from the specimen
without flaming
3.7
flame application time
time for which the ignition flame is applied to the test specimen
3.8
flaming debris
material (3.10) separating from the specimen during the test procedure and igniting the filter paper
3.9
hole
opening, break or discontinuity of any size not present in the original structure of the test specimen’s
fabric but caused by application of the test flame
Note 1 to entry: This document describes the reporting of holes in any separable layer of a multilayer specimen
obtained during surface ignition testing [see 9.2.1.3 g) and Clause 10 i) 7)].
3.10
material
substances, excluding hardware, of which an item of clothing is made
3.11
multilayer assembly
combination of two or more fabrics as separate layers
EXAMPLE An outer shell, interlining and lining together form a multilayer assembly.
Note 1 to entry: A single multilayer material, such as a quilted, bonded or laminated fabric, does not constitute
such an assembly.
3.12
multilayer material
material (3.10) consisting of different fabric layers intimately combined prior to the garment
manufacturing stage, e.g., by weaving, quilting, coating or gluing
4 Principle
A defined flame from a specified burner is applied for 10 s to the surface or the bottom edge of textile
specimens which are vertically oriented.
Information is recorded on melting, the spread of flame and afterglow and on the formation of debris,
flaming debris or a hole. Afterflame time and afterglow time are recorded. Recording of damaged
length is optional in the edge ignition procedure.
Surface exposure tests may be performed on both sides of multilayer fabric assemblies and in the case
of a single layer fabric with different properties on each side.
2 © ISO 2016 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
For edge ignition tests, each layer of multilayer assemblies can be tested either separately or together as
an assembly. Refer to related product standards citing this test method to determine if test specimens
shall be hemmed.
5 Health and safety of test operators
Burning of materials may produce smoke and toxic gases which can affect the health of operators.
Between tests, the atmosphere of the test location, which should be of adequate dimensions to avoid
endangering the health of operators, should be cleared of smoke and fumes by an extractor fan or other
means of ventilation (see 7.1).
Smoke and fume emission may be subject to national regulations concerning atmospheric pollution
control.
6 Fuel
Commercial grade propane of at least 95 % purity shall be used with the flow being controlled by a fine
control valve and flow meter.
Commercial grade propane is the standard gas. If methane, butane or butane/propane mixtures are
used, this fact shall be recorded in the test report as a deviation from this document [see Clause 10 c)]
because use of such gases will influence the flame temperature and lead to variation in results.
7 Apparatus
7.1 Test apparatus — General requirements
Construction: consisting of material which shall not be adversely affected by the fumes and that is
resistant to heat and flame.
NOTE Some products of combustion are corrosive.
Location: surrounded without cabinet by a volume of air sufficient not to be affected by any reduction
of oxygen concentration.
Where an open-fronted fume hood is used for the test, provision shall be made to permit the specimen
to be mounted at least 300 mm from any wall.
7.2 Specimen holders
7.2.1 Consisting of a rectangular metal frame constructed of 10 mm to 20 mm wide metal and having
a specimen support pin at each corner of a rectangle of (190 ± 1) mm length by (150 ± 1) mm width for
Procedure A and (190 ± 1) mm length by (70 ± 1) mm width for Procedure B (see Figure 1).
7.2.2 Supporting pins, for the specimen having a (2 ± 0,5) mm diameter and a length of (25 ± 1) mm.
NOTE Longer pins can be needed for mounting thick or multilayer specimens.
7.2.3 Spacer stub, for the purpose of locating the specimen in a plane at least 20 mm away from the
frame (see 9.1.2.1 and 9.1.3.1), of 2 mm diameter and a length of at least 20 mm and positioned adjacent
to each of the four pins.
© ISO 2016 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
7.3 Gas burner
As described in Annex A and illustrated in Figure 2, capable of being moved from a standby position,
where the tip of the burner is at least 75 mm from the test specimen, to either the horizontal or inclined
position (see Figure 3).
7.4 Mounting frame
Constructed to a design capable of holding the test specimen holder and the gas burner in the specified
relative orientation.
7.5 Templates
Flat and rigid, made of a suitable material and of a size corresponding to the size of the specimen
(200 mm × 160 mm for Procedure A and 200 mm × 80 mm for Procedure B).
Holes approximately 4 mm in diameter shall be drilled in each corner of the template and positioned so
that the distances between the centres of the holes correspond to the distances between the pins on the
specimen holder (see Figure 1). The holes shall be located equidistant about the vertical centreline of
the template.
4 © ISO 2016 – All rights reserved
---------------------- Page: 16 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
Dimensions in millimetres
a) Test specimen holder for Procedure A
© ISO 2016 – All rights reserved 5
---------------------- Page: 17 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
b) Test specimen holder for Procedure B
Key
1 fabric sample
Figure 1 — Test specimen holder
6 © ISO 2016 – All rights reserved
---------------------- Page: 18 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
Dimensions in millimetres
a) Gas burner arrangement
b) Gas jet
c) Flame stabilizer
© ISO 2016 – All rights reserved 7
---------------------- Page: 19 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
d) Burner tube
Key
1 fitted in during assembly 6 notch
2 gas jet 7 gas-mixing zone
3 choke tube 8 diffusion zone
4 burner tube 9 air chamber
5 flame stabilizer 10 gas outlet
Figure 2 — Gas burner
8 © ISO 2016 – All rights reserved
---------------------- Page: 20 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
Dimensions in millimetres
a) Surface ignition b) Vertical stand-by flame height
c) Horizontal stand-by flame length d) Bottom edge ignition
Key
1 burner 4 specimen
2 flame 5 mounting pin
3 mounting frame 6 nominal flame application point
Figure 3 — Flame position and adjustment
© ISO 2016 – All rights reserved 9
---------------------- Page: 21 ----------------------
SIST EN ISO 15025:2017
ISO 15025:2016(E)
7.6 Timing devices
— One timing device to control and measure the flame application time, which can be set at 1 s intervals
with a resolution of 0,2 s or better.
— Two timing devices with a resolution of 0,2 s or better are required to measure the afterflame
time and/or afterglow time. These devices are started automatically at the instant of test flame
termination or removal and are stopped manually.
NOTE Preferably, a video recording of the test can be made, provided that an on-screen timer is provided
with the specified resolution.
7.7 Filter paper
The filter paper for detection of flaming debris (see 9.1.4) shall have the following characteristics:
2 2
— area specific mass: 60 g/m to 100 g/m ;
— size: ≥(150 mm × 100 mm);
— thickness: 0,15 mm to 0,25 mm;
— alpha cellulose content: ≥95 %.
8 Sampling and sample preparation
8.1 Sampling
8.1.1 Number of specimens
Using the appropriate template (7.5), mark two sets of three test specimens. Mark one set perpendicular
to the other. For woven/knitted or similar materials, orient the lengthwise axis of the template in the
machine and cross-machine direction.
For surface ignition, preliminary tests should be undertaken to establish if one surface of the fabric
under examination is likely to produce different flammability behaviour fr
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.