SIST EN ISO 12460-3:2016

SLOVENSKI STANDARD
SIST EN ISO 12460-3:2016
01-februar-2016
1DGRPHãþD
SIST EN 717-2:1996
SIST EN 717-2:1996/AC:2004
/HVQHSORãþH8JRWDYOMDQMHVSURãþDQMDIRUPDOGHKLGDGHO0HWRGDSOLQVNH
DQDOL]H,62
Wood-based panels - Determination of formaldehyde release - Part 3: Gas analysis
method (ISO 12460-3:2015)
Holzwerkstoffe - Bestimmung der Formaldehydabgabe - Teil 3: Gasanalyse-Verfahren
(ISO 12460-3:2015)
Panneaux à base de bois - Détermination du dégagement de formaldéhyde - Partie 3:
Méthode d'analyse des gaz (ISO 12460-3:2015)
Ta slovenski standard je istoveten z: EN ISO 12460-3:2015
ICS:
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
SIST EN ISO 12460-3:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12460-3:2016

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SIST EN ISO 12460-3:2016


EN ISO 12460-3
EUROPEAN STANDARD

NORME EUROPÉENNE

November 2015
EUROPÄISCHE NORM
ICS 79.060.01 Supersedes EN 717-2:1994
English Version

Wood-based panels - Determination of formaldehyde
release - Part 3: Gas analysis method (ISO 12460-3:2015)
Panneaux à base de bois - Détermination du Holzwerkstoffe - Bestimmung der Formaldehydabgabe
dégagement de formaldéhyde - Partie 3: Méthode - Teil 3: Gasanalyse-Verfahren (ISO 12460-3:2015)
d'analyse de gaz (ISO 12460-3:2015)
This European Standard was approved by CEN on 29 August 2015.

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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12460-3:2015 E
worldwide for CEN national Members.

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SIST EN ISO 12460-3:2016
EN ISO 12460-3:2015 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 12460-3:2016
EN ISO 12460-3:2015 (E)
European foreword
This document (EN ISO 12460-3:2015) has been prepared by Technical Committee ISO/TC 89 “Wood-
based panels” in collaboration with Technical Committee CEN/TC 112 “Wood-based panels” 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 May 2016, and conflicting national standards shall be
withdrawn at the latest by May 2016.
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 717-2:1994.
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 12460-3:2015 has been approved by CEN as EN ISO 12460-3:2015 without any
modification.
3

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SIST EN ISO 12460-3:2016

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SIST EN ISO 12460-3:2016
INTERNATIONAL ISO
STANDARD 12460-3
Second edition
2015-11-01
Wood-based panels — Determination
of formaldehyde release —
Part 3:
Gas analysis method
Panneaux à base de bois — Détermination du dégagement de
formaldéhyde —
Partie 3: Méthode d’analyse de gaz
Reference number
ISO 12460-3:2015(E)
©
ISO 2015

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SIST EN ISO 12460-3:2016
ISO 12460-3:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, 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 2015 – All rights reserved

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SIST EN ISO 12460-3:2016
ISO 12460-3:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Reagents . 1
5 Apparatus . 2
5.1 Main composites of test apparatus (see Figure 1) . 2
5.2 Laboratory equipment . 2
6 Sampling and preparation of test pieces . 3
6.1 Preparation of test pieces . 3
6.2 Selection of test pieces for factory production control . 3
6.3 Selection of test pieces for other purposes . 4
6.4 Selection of test pieces in case of dispute . 4
7 Procedure. 4
7.1 Number of determinations . 4
7.2 Determination of moisture content . 4
7.3 Determination of formaldehyde release . 4
7.4 Determination of formaldehyde content of the aqueous solutions . 5
7.4.1 General. 5
7.4.2 Principle . 5
7.4.3 Analytical Procedure . 5
7.4.4 Calibration curve . 5
8 Expression of results . 7
8.1 Gas analysis value . 7
8.2 Calculation of results . 7
8.2.1 Calculation of results of test pieces . 7
8.2.2 Calculation of emission report value . 8
8.3 Moisture content . 8
9 Test report . 8
Bibliography .11
© ISO 2015 – All rights reserved iii

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SIST EN ISO 12460-3:2016
ISO 12460-3:2015(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 WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 89, Wood-based panels.
This second edition cancels and replaces the first edition (ISO 12460-3:2008), which has been
technically revised.
The objective of the revision was to improve the detection limit and the reproducibility of the method
with regard to boards with low formaldehyde content.
Compared to ISO 12460-3:2008, the following modifications have been made:
a) in 6.1 preparation of test pieces is described more in detail;
b) in 6.2 recommendation of maximum time 72 h after sampling for formaldehyde determination is
added;
c) in 6.4 conditioning for sampling and testing in case of dispute is added;
d) in 7.1 and 8.2.2 procedure and evaluation of third determination are modified;
e) in 7.3 use of smaller gas wash bottles and volumetric flasks to improve the sensitivity is included
as an option;
f) in 7.4.3 the use of a mixed reagent is included as an option to reduce the amounts of aqueous
solution and hence improve the sensitivity;
g) in 7.4.3 temperature of water bath increased to 60 °C and cooling procedure is modified;
h) in 7.4.4.1 minimum interval of check of the calibration curve is extended to once a month;
i) in Clause 9 age and treatment of the sample are included in the test report;
j) in Figure 2 calibration curve is modified.
ISO 12460 consists of the following parts, under the general title Wood-based panels — Determination of
formaldehyde release:
iv © ISO 2015 – All rights reserved

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SIST EN ISO 12460-3:2016
ISO 12460-3:2015(E)

— Part 1: Formaldehyde emission by the 1-cubic-metre chamber method
— Part 3: Gas analysis method
— Part 4: Desiccator method
— Part 5: Extraction method (called the perforator method)
Additional parts dealing with small-scale chamber method is planned.
© ISO 2015 – All rights reserved v

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SIST EN ISO 12460-3:2016

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SIST EN ISO 12460-3:2016
INTERNATIONAL STANDARD ISO 12460-3:2015(E)
Wood-based panels — Determination of formaldehyde
release —
Part 3:
Gas analysis method
1 Scope
This part of ISO 12460 specifies a procedure for determination of accelerated formaldehyde release
from uncoated and coated wood-based panels using the gas analysis method. The procedure is also
suitable for the testing of other materials (e.g. edge bands, floor coverings, foams, foils, laminated wood
products, veneered wood products, coated wood products).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 16979, Wood-based panels — Determination of moisture content
ISO 16999, Wood-based panels — Sampling and cutting of test pieces
3 Principle
A test piece of known surface area is placed in a closed chamber in which the temperature, humidity,
airflow, and pressure are controlled to defined values. Formaldehyde released from the test pieces
mixes with the air in the chamber. This air is continually drawn from the chamber and passes through
gas wash bottles, containing water, which absorbs the released formaldehyde. At the end of the test,
the formaldehyde concentration is determined photometrically or fluorimetrically. The formaldehyde
release is calculated from this concentration, the sampling time, and the exposed area of the test pieces
2
and is expressed in milligrams per square meter and hour (mg/m h).
4 Reagents
Reagents of recognized analytical purity and distilled or demineralised water (referred throughout the
following text as distilled water) shall be used for the analysis.
4.1 4 ml Acetylacetone solution are added to a 1 000 ml volumetric flask and made up to the mark
with distilled water.
4.2 200 g ammonium acetate solution are dissolved with distilled water in a 1 000 ml volumetric
flask and made up to the mark.
Optionally, a premixed reagent of acetylacetone and ammonium acetate as described in ISO 12460-4
can be used.
4.3 Formaldehyde solution commercially available (concentration typically between
35 % mass fraction to 40 % mass fraction).
© ISO 2015 – All rights reserved 1

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SIST EN ISO 12460-3:2016
ISO 12460-3:2015(E)

4.4 Standard iodine solution c(l ) = 0,05 mol/l
2
4.5 Standard sodium thiosulphate solution c(Na S O ) = 0,1 mol/l
2 2 3
4.6 Standard sodium hydroxide solution c(NaOH) = 1 mol/l
4.7 Standard sulphuric acid solution c(H SO ) = 1 mol/l
2 4
4.8 Starch solution 1 % by mass
5 Apparatus
5.1 Main composites of test apparatus (see Figure 1)
5.1.1 Air filter (1).
5.1.2 Wash bottle, 500 ml, containing ca. 400 ml distilled water (2).
5.1.3 Desiccator, 500 ml, containing silica gel (3).
5.1.4 Air pump (4).
5.1.5 Needle valve (5).
5.1.6 Equipment for measuring rate of air flow through apparatus (6).
...