CEN/TR 16663:2014

SLOVENSKI STANDARD
01-julij-2014
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Durability of wood and wood-based products - Determination of emissions from
preservative treated wood to the environment - Wooden commodities exposed in Use
Class 3 (Not covered, not in contact with the ground) - Semi-field method
Dauerhaftigkeit von Holz und Holzprodukten - Abschätzung von Emissionen von mit
Holzschutzmitteln behandeltem Holz an die Umwelt - Holzprodukte in Gebrauchsklasse
3 (nicht abgedeckt, ohne Erdkontakt) - Semi-Feldverfahren
Durabilité du bois et des matériaux dérivés du bois - Détermination des émissions dans
l'environnement du bois traité avec des produits de préservation - Produits de base en
bois exposés à la classe d’emploi n° 3 (dans un endroit abrité, n'étant pas en contact
avec le sol) - Méthode semi-terrain
Ta slovenski standard je istoveten z: CEN/TR 16663:2014
ICS:
13.020.30 Ocenjevanje vpliva na okolje Environmental impact
assessment
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CEN/TR 16663
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
May 2014
ICS 13.020.30; 71.100.50
English Version
Durability of wood and wood-based products - Determination of
emissions from preservative treated wood to the environment -
Wooden commodities exposed in Use Class 3 (Not covered, not
in contact with the ground) - Semi-field method
Durabilité du bois et des matériaux dérivés du bois - Dauerhaftigkeit von Holz und Holzprodukten - Abschätzung
Détermination des émissions dans l'environnement du bois von Emissionen von mit Holzschutzmitteln behandeltem
traité avec des produits de préservation - Produits de base Holz an die Umwelt - Holzprodukte in Gebrauchsklasse 3
en bois exposés à la classe d'emploi n° 3 (dans un endroit (nicht abgedeckt, ohne Erdkontakt) - Semi-Feldverfahren
abrité, n'étant pas en contact avec le sol) - Méthode semi-
terrain
This Technical Report was approved by CEN on 20 January 2014. It has been drawn up by the Technical Committee CEN/TC 38.

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CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16663:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Description of the test method .6
3.1 Principle .6
3.2 Quality criteria .6
3.3 Wood preservative .6
3.4 Apparatus .7
3.4.1 Vessel for receiving water .7
3.4.2 Gutter, screws, hooks .7
3.4.3 Weather station .7
3.4.4 Wood working equipment .7
3.4.5 Condition chamber .7
3.4.6 Mixing vessel .7
3.4.7 Preservative treatment .7
3.4.8 Balance .7
3.4.9 Kiln .7
3.4.10 Safety equipment and protection clothing .7
3.4.11 Refrigerator/Freezer .8
3.4.12 Chemical analysis equipment .8
3.4.13 Exposure site .8
3.4.14 Exposure weathering racks .8
3.5 Test specimens .8
3.5.1 General .8
3.5.2 Species of wood.8
3.5.3 Quality of wood and wood moisture content .8
3.5.4 Preparation of test specimens .9
3.5.5 Number of test specimens .9
3.5.6 End seal .9
3.6 Procedure .9
3.6.1 Product under test .9
3.6.2 Treatment and handling of test specimens .9
3.6.3 Untreated controls (optional) . 10
3.6.4 Exposure test site . 10
3.6.5 Duration of the test . 10
3.6.6 Collection of the leachates . 11
3.6.7 Chemical analysis . 11
3.7 Expression of results . 11
4 Test report . 12
Annex A (informative) Test set-up and weather rack . 14
A.1 Vertical exposure . 14
A.2 Horizontal exposure . 16
Annex B (informative) Model treatments . 17
B.1 For preservative intended for superficial treatment . 17
B.2 For preservative intended for penetration treatment . 17
Annex C (informative) Orientation of annual growth rings and accepted heartwood . 18
Annex D (informative) Stability study . 19
Bibliography . 20

Foreword
This document (CEN/TR 16663:2014) has been prepared by Technical Committee CEN/TC 38 “Durability of
wood and wood-based products”, the secretariat of which is held by AFNOR.
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.
Introduction
The leaching from preservative treated wood into the environment need to be quantified to enable an
environmental risk assessment to be made of the treated wood, e.g. according to the Biocidal Products
Regulation, 528/2012. This document describes a semi-field method for the determination of leachate from
preservative treated wood where the preservative treated wood is not covered and not in contact with the
ground or water (use class 3 according to EN 335).
The method is a semi-field procedure for obtaining water samples (leachate) from treated wood exposed out
of ground contact, during a natural exposure. The quantities of emissions in the leachate are related to the
surface area of the wood and may be used in scenarios for the environmental risk assessment of the treated
wood.
NOTE The leachate can also be tested for eco-toxicological effects (example: OECD 202 testing on Daphnia sp.).
1 Scope
This Technical Report specifies a method for determining the leaching of active ingredients or other
compounds from preservative treated wood by a semi-field method for use class 3 (outdoor above ground).
The preservative treated wood can be tested with or without subsequently surface coating or other water-
repellent treatment. The method is applicable to the testing of commercial or experimental preservatives or
paint systems applied to timber by methods appropriate to commercial practice.
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.
EN ISO 5667-3, Water quality - Sampling - Part 3: Preservation and handling of water samples (ISO 5667-3)
3 Description of the test method
3.1 Principle
Panels are treated, assembled and placed outdoors, out of ground contact and exposed to the normal
environmental and ecological factors which affect preservative treated wood so exposed in practice. The
rainwater is retained and the leachate is monitored by chemical analyses of the active ingredients and/or other
compounds.
3.2 Quality criteria
The validity of the analytical method for the substances in question should be determined before conducting
the test:
a) accuracy;
b) specificity;
c) limit of detection (LOD);
d) limit of quantification (LOQ);
e) precision
NOTE EN ISO 5667-3 may give guidance on the preservation and handling of water samples.
3.3 Wood preservative
The test report shall state the name and other designation of the preservative, and the trade or common name
of the active ingredient(s) as defined in the regulation n°528/2012.
Use of a coating is possible (identity and amount of coating used shall be stated in the test report).
3.4 Apparatus
3.4.1 Vessel for receiving water
Laboratory brown glass flask or plastic jars with no impurities which can influence the active ingredient.
NOTE EN ISO 5667-3 gives the good practices to preserve water samples.
The brow
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