oSIST prEN ISO 12460-2:2025

SLOVENSKI STANDARD
01-januar-2025
Lesne plošče - Ugotavljanje sproščanja formaldehida - 2. del: Metoda z majhno
komoro (ISO 12460-2:2024)
Wood-based panels - Determination of formaldehyde release - Part 2: Small-scale
chamber method (ISO 12460-2:2024)
Holzwerkstoffe - Bestimmung der Formaldehydabgabe - Teil 2:
Kleinprüfkammerverfahren (ISO 12460-2:2024)
Panneaux à base de bois - Détermination du dégagement de formaldéhyde - Partie 2:
Méthode à la petite chambre (ISO 12460-2:2024)
Ta slovenski standard je istoveten z: prEN ISO 12460-2
ICS:
79.060.01 Lesne plošče na splošno Wood-based panels in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International
Standard
ISO 12460-2
Second edition
Wood-based panels —
2024-02
Determination of formaldehyde
release —
Part 2:
Small-scale chamber method
Panneaux à base de bois — Détermination du dégagement de
formaldéhyde —
Partie 2: Méthode à la petite chambre
Reference number
ISO 12460-2:2024(en) © ISO 2024

ISO 12460-2:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
ISO 12460-2:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
5 Significance and use . 2
6 Interferences . 3
7 Apparatus . 3
7.1 Test chamber .3
7.1.1 General .3
7.1.2 Air exchange rate .3
7.1.3 Air circulation .3
7.1.4 Make-up air .3
7.1.5 Equipment for monitoring of test conditions .3
7.1.6 Air sampling port .3
7.2 Air sampling system .4
7.2.1 Sampling system for wet-chemistry analysis .4
7.2.2 Direct sampling .5
8 Sample material handling and specimen conditioning . 5
8.1 Handling .5
8.2 Test specimen .5
8.3 Conditioning.6
8.4 Sealing of test piece edges .6
9 Procedure . 6
9.1 Test conditions .6
9.2 Test procedure for materials .7
9.3 Air sampling .7
9.4 Analysis of air samples .7
9.4.1 General .7
9.4.2 Equivalence of analytical procedures – General requirements .7
10 Calculation . 8
11 Determination of air exchange rate . 9
12 Test report . 9
Annex A (informative) Test chambers .11
Annex B (informative) Conversion of formaldehyde test results .23
Annex C (normative) Analytical procedure of formaldehyde determination .27
Annex D (informative) Establishing of a correlation .56
Bibliography .75

iii
ISO 12460-2:2024(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 Technical Committee ISO/TC 89, Wood-based panels.
This second edition cancels and replaces the first edition (ISO 12460-2:2018), which has been technically
revised.
The main changes are as follows:
— implementation of different chamber sizes, analytical procedures, re-calculation of results to other
standard parameters and establish a correlation between reference chamber method and the method
used for factory production control.
A list of all parts in the ISO 12460 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.

iv
International Standard ISO 12460-2:2024(en)
Wood-based panels — Determination of formaldehyde
release —
Part 2:
Small-scale chamber method
1 Scope
This document specifies a procedure for a chamber test with different options of chamber sizes to measure
the formaldehyde concentrations in air from wood products under defined test conditions of temperature,
relative humidity, loading and air exchange rate.
Results obtained from this small-scale chamber test method can be used for quality control (factory
production control – ‘FPC’) based on correlation established by reference chamber test methods according
to ISO, EN or ASTM standards. The establishment of a correlation is described in Annex D.
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
air exchange rate
N
3 3
quotient of air volume Q passing through the chamber per hour (m /h) and the chamber volume (m )
−1
expressed in (h )
3.2
loading ratio
L
total exposed surface area, excluding panel edges, of the product being tested divided by the test chamber’s
2 3
volume (m /m )
3.3
make-up airflow
Q
quantity of conditioned and filtered air fed into the chamber per unit time, in m /h
3.4
Q/A ratio
3 2
ratio of air flow through the chamber (Q) to sample surface area (A), in m /h m

ISO 12460-2:2024(en)
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