Wood-based panels - Determination of formaldehyde release - Part 5: Extraction method (called the perforator method) (ISO 12460-5:2015)

ISO 12460-5:2015 specifies an extraction method known as the "perforator method". It is used for the determination of the formaldehyde content of unlaminated and uncoated wood-based panels.

Holzwerkstoffe - Bestimmung der Formaldehydabgabe - Teil 5: Extraktionsverfahren (genannt Perforatormethode) (ISO 12460-5:2015)

Dieser Teil von ISO 12460 legt ein Extraktionsverfahren, bekannt als „Perforatormethode“ fest. Er wird angewendet für die Bestimmung des Formaldehydgehaltes von unbeschichteten und unlackierten Holzwerkstoffen.

Panneaux à base de bois - Détermination du dégagement de formaldéhyde - Partie 5 : Méthode d'extraction (dite méthode au perforateur) (ISO 12460-5:2015)

ISO 12460-5:2015 prescrit une méthode d'extraction dite « méthode au perforateur ». Elle est utilisée pour la détermination de la teneur en formaldéhyde des panneaux à base de bois non mélaminés et non revêtus d'une finition.

Lesne plošče - Ugotavljanje sproščanja formaldehida - 5. del: Ekstrakcijska metoda (imenovana perforatorska metoda) (ISO 12460-5:2015)

Ta dokument določa ekstrakcijsko metodo, imenovano perforatorska metoda, za ugotavljanje vsebnosti formaldehida v nelaminiranih in neprevlečenih lesnih ploščah.

General Information

Status
Published
Publication Date
08-Dec-2015
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
09-Dec-2015
Completion Date
09-Dec-2015

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SLOVENSKI STANDARD
SIST EN ISO 12460-5:2016
01-februar-2016
1DGRPHãþD
SIST EN 120:1996
/HVQHSORãþH8JRWDYOMDQMHVSURãþDQMDIRUPDOGHKLGDGHO(NVWUDNFLMVND
PHWRGD LPHQRYDQDSHUIRUDWRUVNDPHWRGD  ,62

Wood-based panels - Determination of formaldehyde release - Part 5: Extraction method

(called the perforator method) (ISO 12460-5:2015)
Holzwerkstoffe - Bestimmung der Formaldehyabgabe - Teil 5: Extraktionsverfahren
(genannt Perforatormethode) (ISO 12460-5:2015)

Panneaux à base de bois - Détermination du dégagement de formaldéhyde - Partie 5:

Méthode d'extraction (dite méthode au perforateur) (ISO 12460-5:2015)
Ta slovenski standard je istoveten z: EN ISO 12460-5:2015
ICS:
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
SIST EN ISO 12460-5:2016 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12460-5:2016
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SIST EN ISO 12460-5:2016
EN ISO 12460-5
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2015
EUROPÄISCHE NORM
ICS 79.060.01 Supersedes EN 120:1992
English Version
Wood-based panels - Determination of formaldehyde
release - Part 5: Extraction method (called the perforator
method) (ISO 12460-5:2015)

Panneaux à base de bois - Détermination du Holzwerkstoffe - Bestimmung der Formaldehyabgabe -

dégagement de formaldéhyde - Partie 5 : Méthode Teil 5: Extraktionsverfahren (genannt

d'extraction (dite méthode au perforateur) (ISO Perforatormethode) (ISO 12460-5:2015)

12460-5:2015)
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 12460-5:2015 E

worldwide for CEN national Members.
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SIST EN ISO 12460-5:2016
EN ISO 12460-5:2015 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 12460-5:2016
EN ISO 12460-5:2015 (E)
European foreword

This document (EN ISO 12460-5:2015) 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 June 2016, and conflicting national standards shall be

withdrawn at the latest by June 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 120:1992.

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 12460-5:2015 has been approved by CEN as EN ISO 12460-5:2015 without any

modification.
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SIST EN ISO 12460-5:2016
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SIST EN ISO 12460-5:2016
INTERNATIONAL ISO
STANDARD 12460-5
Second edition
2015-11-15
Wood-based panels — Determination
of formaldehyde release —
Part 5:
Extraction method (called the
perforator method)
Panneaux à base de bois — Détermination du dégagement de
formaldéhyde —
Partie 5: Méthode d’extraction (dite méthode au perforateur)
Reference number
ISO 12460-5:2015(E)
ISO 2015
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SIST EN ISO 12460-5:2016
ISO 12460-5:2015(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 12460-5:2016
ISO 12460-5:2015(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Principle ........................................................................................................................................................................................................................ 1

4 Reagents ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 1

6 Test pieces ................................................................................................................................................................................................................... 3

6.1 General ........................................................................................................................................................................................................... 3

6.2 Sampling ....................................................................................................................................................................................................... 3

6.3 Sampling for factory production control .......................................................................................................................... 3

6.4 Sampling for other purposes ...................................................................................................................................................... 3

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Number of extractions ...................................................................................................................................................................... 3

7.2 Determination of moisture content ...................................................................................................................................... 3

7.3 Extraction in the perforator ......................................................................................................................................................... 4

7.4 Blank test ..................................................................................................................................................................................................... 4

7.5 Determination of formaldehyde in the extract ............................................................................................................ 4

7.5.1 General...................................................................................................................................................................................... 4

7.5.2 Principle .................................................................................................................................................................................. 5

7.5.3 Reagents .................................................................................................................................................................................. 5

7.5.4 Analytical procedure .................................................................................................................................................... 5

7.5.5 Calibration curve ............................................................................................................................................................. 5

7.6 Quality assurance.................................................................................................................................................................................. 6

8 Expression of results ........................................................................................................................................................................................ 7

8.1 Moisture content ................................................................................................................................................................................... 7

8.2 Perforator value ..................................................................................................................................................................................... 7

9 Test report ................................................................................................................................................................................................................... 8

Annex A (normative) Perforator extraction efficiency test — Calibration of the

perforator method ...........................................................................................................................................................................................13

Bibliography .............................................................................................................................................................................................................................14

© ISO 2015 – All rights reserved iii
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SIST EN ISO 12460-5:2016
ISO 12460-5:2015(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 12460-5:2011), 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 12460-5:2011, the following modifications have been made:
a) in 5.3 recommendation of cell length for low emitting samples is added;
b) in 6.4 relative humidity for conditioning climate is increased to (65 ± 5) %;
c) in 7.1 and 8.2 procedure and evaluation of third extraction are modified;

d) in 7.3 accuracy of weighing of test pieces enhanced and higher mass of the test pieces is added as an

option for low emitting boards;
e) in 7.4 precision of blank test is improved;
f) in 7.5.1 fluorimetric determination of formaldehyde is added an option;
g) in 7.5.4 temperature of water bath is increased to 60 °C;
h) in 8.2 modification factors for moisture content is included;
i) in Figure 4 calibration curve is modified;
j) Annex A for calibration and quality assurance is added.

ISO 12460 consists of the following parts, under the general title Wood-based panels — Determination of

formaldehyde release:
— Part 1: Formaldehyde emission by the 1-cubic-metre chamber method
iv © ISO 2015 – All rights reserved
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SIST EN ISO 12460-5:2016
ISO 12460-5:2015(E)
— 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 12460-5:2016
ISO 12460-5:2015(E)
Introduction

The “perforator value” as determined by the method laid down in this part of ISO 12460 is considered

to be the “formaldehyde content” of the tested board.

The test results are dependent on the specific board conditions at the time of testing.

The emission of formaldehyde from wood-based panels (e.g. particleboard, plywood, fibreboard, OSB) is

a complex process. For a given board, the test result depends upon the age, ageing conditions, moisture

content, etc., at the time of testing.

In addition, the correlation between the perforator value and the formaldehyde emission of the board

depends on the type of board.
vi © ISO 2015 – All rights reserved
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SIST EN ISO 12460-5:2016
INTERNATIONAL STANDARD ISO 12460-5:2015(E)
Wood-based panels — Determination of formaldehyde
release —
Part 5:
Extraction method (called the perforator method)
1 Scope

This part of ISO 12460 specifies an extraction method known as the “perforator method”. It is used for

the determination of the formaldehyde content of unlaminated and uncoated wood-based panels.

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

The formaldehyde is extracted from test pieces by means of boiling toluene and then transferred into

distilled or demineralized water. The formaldehyde content of this aqueous solution is determined

photometrically by the acetylacetone method.
4 Reagents

For the analysis, only reagents of analytical quality and distilled or demineralized water shall be used.

4.1 Toluene, which is free from water and from impurities which may interfere with the test.

4.2 Acetylacetone, of analytical grade.
4.3 Ammonium acetate, of analytical grade.
4.4 Formaldehyde solution.

Commercially available formaldehyde solution (concentration typically between 35 % mass fraction to

40 % mass fraction).
5 Apparatus
5.1 Precision balance, with 0,01 g scale intervals.
5.2 Well-ventilated oven, capable of maintaining a temperature of (103 ± 2) °C.
© ISO 2015 – All rights reserved 1
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SIST EN ISO 12460-5:2016
ISO 12460-5:2015(E)

5.3 Spectrophotometer, capable of measuring absorbance at 412 nm. A cell of 50 mm path length is

recommended, especially for low emitting samples.
5.4 Extraction apparatus.
The apparatus consists of the following:

— spiral condenser (Dimroth cooler), total length: approximately 400 mm, cone 45/40, socket 29/32

(item reference 2);
— conical adaptor, socket 45/40, cone 71/51 (item reference 3);

— filter insert, porosity P 160 (100 pm to 160 pm), bowl and filter diameters: 60 mm (item reference 4);

— perforator attachment, 1 000 ml, with stopcock (4 mm bore), socket 71/51, cone 29/32 (item

reference 5);
— conical adaptor, socket 29/32, cone 45/40 (item reference 8);
— 1 000 ml round bottom flask, socket 45/40 (item reference 9);

— (double) bulbed tube, cone 29/32 (length: approximately 380 mm), external diameter: approximately

10 mm, bulb diameter: approximately 50 mm, distance between bulb and bottom end of tube:

approximately 200 mm (distance between the bulbs: approximately 50 mm) (item reference 6);

— absorption bulb (e.g. conical flask 250 ml) (item reference 7);
— heating mantle (item reference 10).

The item references are given in Figure 1. Details of the apparatus are shown in Figure 2 and Figure 3.

Permanent PTFE seals should be used rather than paraffin or silicone grease sealant

...

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