EN 839:2014

SLOVENSKI STANDARD
01-januar-2015
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SIST-TS CEN/TS 839:2008
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Wood preservatives - Determination of the protective effectiveness against wood
destroying basidiomycetes - Application by surface treatment
Holzschutzmittel - Bestimmung der vorbeugenden Wirksamkeit gegen Holz zerstörende
Basidiomyceten - Anwendung mit Oberflächenverfahren
Produits de préservation du bois - Détermination de l'efficacité protectrice vis-à-vis des
champignons basidiomycètes lignivores - Application par traitement de surface
Ta slovenski standard je istoveten z: EN 839:2014
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 839
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2014
ICS 71.100.50 Supersedes CEN/TS 839:2008
English Version
Wood preservatives - Determination of the protective
effectiveness against wood destroying basidiomycetes -
Application by surface treatment
Produits de préservation du bois - Détermination de Holzschutzmittel - Bestimmung der vorbeugenden
l'efficacité protectrice vis-à-vis des champignons Wirksamkeit gegen Holz zerstörende Basidiomyceten -
basidiomycètes lignivores - Application par traitement de Anwendung mit Oberflächenverfahren
surface
This European Standard was approved by CEN on 30 August 2014.

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
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 839:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Principle .7
5 Test materials and apparatus .7
5.1 Biological material .7
5.2 Products and reagents .8
5.3 Apparatus .9
6 Sampling of the preservative .9
7 Test specimens . 10
7.1 Species of wood. 10
7.2 Wood quality . 10
7.3 Provision of the test specimens . 10
7.4 Dimensions and density of test specimens . 10
7.5 Number and distribution of test specimens . 11
8 Procedure . 11
8.1 Preparation of the untreated test specimens . 11
8.2 Preparation of the treated test specimens . 12
8.3 Exposure to fungi . 13
8.4 Culture conditions and duration of test . 13
8.5 Assessment of test . 13
9 Statement of results . 15
10 Test report . 15
Annex A (informative) Test fungi . 17
A.1 General information on maintenance and acquisition of test strains . 17
A.2 Maintenance and treatment of test fungi . 17
A.3 Information regarding obligatory fungi . 18
Annex B (normative) Methods of sterilization . 20
B.1 Ionizing radiation . 20
B.2 Epoxyethane-based sterilant . 20
B.3 Epoxypropane-based sterilant . 21
B.4 Steam . 21
Annex C (informative) Examination of colonisation . 22
C.1 General . 22
C.2 Procedure . 22
C.3 Assessment of test . 22
C.4 Validity of results . 23
C.5 Statement of results . 23
Annex D (informative) Example of a test report . 25
Annex E (informative) Environmental, health and safety precautions within chemical/biological
laboratory . 28
Bibliography . 29

Foreword
This document (EN 839:2014) has been prepared by Technical Committee CEN/TC 38 “Durability of wood
and wood-based products”, the secretariat of which is held by AFNOR.
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 2015 and conflicting national standards shall be withdrawn at the
latest by May 2015.
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 CEN/TS 839:2008.
In comparison with the previous version of the document, EN 839:2014 has been revised editorially.
This document includes annexes; Annex A, Annex C, Annex D and Annex E are informative and Annex B is
normative.
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.
Introduction
This European Standard specifies a laboratory method of test which gives a basis for assessing the
effectiveness of a wood preservative, when applied as a surface treatment, against wood destroying
basidiomycetes. It tests whether the applied treatment is able to prevent the penetration of the fungi into the
untreated interior of the test specimens under the conditions of test.
This laboratory method provides one criterion by which the effectiveness of a product can be assessed. In
making this assessment, the methods by which the preservative may be applied should be taken into account.
It is also recommended that results from this test should be supplemented by those from other relevant tests
and above all by practical experience.
The procedures described in this European Standard method are intended to be carried out by suitably trained
and/or supervised specialists.
Suitable precautions should include the use of separate rooms, areas within rooms, extraction facilities,
conditioning chambers and special training for personnel. Also see Annex E for environmental, health and
safety precautions.
1 Scope
This European Standard specifies a method of test for the determination of the protective effectiveness of a
wood preservative, applied to the surface of the wood, against wood destroying basidiomycetes cultured on
an agar medium.
The method is applicable to all products which are to be applied by superficial application processes. This
includes:
— organic solvent-based wood preservatives; or
— organic water-dispersible formulations, as supplied or as prepared in the laboratory by dilution of
concentrates; or
— water-soluble products; or
— chemicals which are being studied as active ingredients for application by superficial processes.
This method may be used in conjunction with an ageing procedure, for example EN 73.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
representative sample
sample having its physical and/or chemical characteristics identical to the volumetric average characteristics
of the total volume being sampled
[SOURCE: EN 1001-2, 4.71]
3.2
supplier
sponsor of the test (person or company providing the sample of wood preservative to be tested)
[SOURCE: EN 1001-2, 4.83, modified]
3.3
superficial application process
process which does not include particular features or procedures intended to overcome the natural resistance
of wood to penetration of a wood preservative in its ready to use form
[SOURCE: EN 1001-2, 4.82]
4 Principle
Several series of test specimens of a susceptible wood species are end-sealed with a material to prevent
penetration of the wood preservative under test into the end grain of the test specimens. The end-sealed test
specimens are treated with the wood preservative under test using the process and applicati
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