ISO 16502-1:2024

International
Standard
ISO 16502-1
First edition
Furniture — Assessment of the
2024-05
ignitability of mattresses and
upholstered bed bases —
Part 1:
Ignition source: smouldering
cigarette
Ameublement — Évaluation de l'allumabilité des matelas et des
sommiers rembourrés —
Partie 1: Source d'allumage: cigarette en combustion
Reference number
© ISO 2024
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Criteria of ignition . 2
4.1 Progressive smouldering ignition .2
4.2 Flaming ignition .2
5 Principle . 2
6 Instructions for use . . 2
6.1 General .2
6.2 Enclosure .2
6.3 Extinguishers .3
7 Apparatus . 3
7.1 Test rig .3
7.2 Test enclosure .4
7.3 Clock .4
7.4 Ignition source: smouldering cigarette .5
8 Atmospheres for conditioning and testing . 5
8.1 Conditioning.5
8.2 Testing .5
9 Test specimen . 5
9.1 General .5
9.2 Small scale .5
9.3 Full size .6
10 Test procedure . 6
10.1 Preparation .6
10.2 Ignition source application .6
10.3 Final examination .7
11 Test report . 7
Annex A (informative) Model test report form . 8

iii
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
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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 document should be noted. This document was drafted in accordance with the editorial rules of the
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This document was prepared by Technical Committee ISO/TC 136, Furniture.
A list of all parts in the ISO 16502 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 atwww.iso.org/members.html.

iv
Introduction
This document is a part of the ISO 16502 series concerned with the ignitability of mattresses and upholstered
bed bases using different ignition sources. The ignition source used in this document is a smouldering
cigarette.
When mattresses or bed bases are used or stored on their own, it is desirable to know their ignitability in
their own right.
It cannot be assumed that protection against flaming sources automatically gives protection against
smouldering ignition. Users of this document should therefore recognize the need to submit test specimens
to both cigarette and flaming ignition tests.
WARNING — Attention is drawn to the fact that the tests given in the test report (see Clause 11) are
not intended to reproduce the full fire hazards that may be encountered.

v
International Standard ISO 16502-1:2024(en)
Furniture — Assessment of the ignitability of mattresses and
upholstered bed bases —
Part 1:
Ignition source: smouldering cigarette
1 Scope
This document specifies a test method to assess the ignitability of mattresses, upholstered bed bases or
mattress pads when subjected to a smouldering cigarette as an ignition source.
This document does not apply to air mattresses and water beds.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
progressive smouldering
exothermic oxidation, not accompanied by flaming (3.2), that is self-propagating, i.e. independent of the
ignition source (3.4), which may or may not be accompanied by incandescence
3.2
flaming
undergoing combustion in the gaseous phase with the emission of light
3.3
ignitability
measure of the ease with which a material, product or component can be ignited so as to flame or
progressively smoulder
3.4
ignition source
source of energy used to ignite combustible materials or products
3.5
mattress pad
upholstered product that is used in conjunction with, and to complement, a mattress (3.6) or upholstered
bed base (3.7)
3.6
mattress
upholstered product intended for sleeping upon
3.7
bed base
structure that supports a mattress (3.6) or the surface(s) of a mattress that support(s) a user
3.8
upper surface
surface of a bed base (3.7) that supports a mattress (3.6) or the surface(s) of a mattress that support(s) a user
4 Criteria of ignition
4.1 Progressive smouldering ignition
For the purposes
...