CEN/TS 839:2008
(Main)Wood preservatives - Determination of the protective effectiveness against wood destroying basidiomycetes - Application by surface treatment
Wood preservatives - Determination of the protective effectiveness against wood destroying basidiomycetes - Application by surface treatment
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.
NOTE This method may be used in conjunction with an ageing procedure, for example EN 73.
Holzschutzmittel - Bestimmung der vorbeugenden Wirksamkeit gegen holzzerstörende Basidiomyceten - Anwendung mit Oberflächenverfahren
Diese Europäische Norm legt ein Prüfverfahren zur Bestimmung der vorbeugenden Wirksamkeit eines auf die
Holzoberfläche aufgebrachten Holzschutzmittels gegen auf einem Agarmedium gezüchtete holzzerstörende
Basidiomyceten fest.
Das Verfahren ist auf alle Produkte anwendbar, die für die Anwendung mit Oberflächenverfahren bestimmt
sind. Dazu gehören:
- Holzschutzmittel auf der Grundlage organischer Lösemittel;
- wasserdispergierbare organische Formulierungen im Anlieferungszustand oder in der Form, in der sie im
Laboratorium durch Verdünnung von Konzentraten hergestellt werden;
- wasserlösliche Produkte;
- Chemikalien, die als Wirkstoffe für die Anwendung mit Oberflächenverfahren untersucht werden.
ANMERKUNG Dieses Verfahren kann in Verbindung mit einer Alterungsbeanspruchung, z. B nach EN 73, angewendet
werden.
Produits de préservation du bois - Détermination de l'efficacité protectrice vis-à-vis des champignons basidiomycètes lignivores - Application par traitement de surface
La présente Norme européenne spécifie une méthode d’essai de la détermination de l’efficacité protectrice d’un produit de préservation du bois, appliqué par un traitement de surface, vis-à-vis des champignons basidiomycètes lignivores cultivés sur milieu gélosé.
Cette méthode est applicable à tous les produits destinés à être appliqués par des procédés par application superficielle. Cela comprend :
- les produits de préservation du bois solubles dans les solvants organiques ; ou
- des émulsions telles qu’elles sont livrées ou préparées en laboratoire à partir de concentrés ; ou
- des produits hydrosolubles ; ou
- des produits chimiques étudiés en tant que matières actives pour l’application par des procédés de surface.
NOTE Cette méthode peut être utilisée conjointement à une épreuve de vieillissement, par exemple celle décrite dans l’EN 73.
Zaščitna sredstva za les - Ugotavljanje preventivne učinkovitosti zaščitnih sredstev proti glivam odprtotrosnicam - Površinsko nanašanje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST-TS prCEN/TS 839:2007
01-september-2007
=DãþLWQDVUHGVWYD]DOHV8JRWDYOMDQMHSUHYHQWLYQHXþLQNRYLWRVWL]DãþLWQLK
VUHGVWHYSURWLJOLYDPRGSUWRWURVQLFDP3RYUãLQVNRQDQDãDQMH
Wood preservatives - Determination of the protective effectiveness against wood
destroying basidiomycetes - Application by surface treatment
Holzschutzmittel - Bestimmung der vorbeugenden Wirksamkeit gegen holzzerstörende
Basidiomyceten - Anwendung mit Oberflächenverfahren
Produits de préservation du bois - Détermination de l'efficacité protectrice vis-a-vis des
champignons basidiomycetes lignivores - Application par traitement de surface
Ta slovenski standard je istoveten z: prCEN/TS 839
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
oSIST-TS prCEN/TS 839:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION
FINAL DRAFT
prCEN/TS 839
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
July 2007
ICS 71.100.50 Will supersede ENV 839:2002
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 holzzerstörende Basidiomyceten -
basidiomycètes lignivores - Application par traitement de Anwendung mit Oberflächenverfahren
surface
This draft Technical Specification is submitted to CEN members for formal vote. It has been drawn up by the Technical Committee CEN/TC
38.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Warning : This document is not a Technical Specification. It is distributed for review and comments. It is subject to change without notice
and shall not be referred to as a Technical Specification.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. prCEN/TS 839:2007: E
worldwide for CEN national Members.
prCEN/TS 839:2007 (E)
Contents Page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Principle.6
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.9
7.1 Species of wood.9
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 .10
8 Procedure .11
8.1 Preparation of the untreated test specimens .11
8.2 Preparation of the treated test specimens.11
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 .14
10 Test report .14
Annex A (informative) Test fungi .16
A.1 General information on maintenance and acquisition of test strains.16
A.2 Maintenance and treatment of test fungi .16
A.3 Information regarding obligatory fungi .17
Annex B (normative) Methods of sterilisation .19
B.1 Ionising radiation.19
B.2 Epoxyethane-based sterilant.19
B.3 Epoxypropane-based sterilant .19
B.4 Steam .20
prCEN/TS 839:2007 (E)
Annex C (informative) .21
Examination of colonisation.21
C.5 Statement of results .22
Annex D (informative) Example of a test report.24
Annex E (informative) .27
Environmental, health and safety precautions within chemical/biological laboratory.27
Bibliography.28
prCEN/TS 839:2007 (E)
Foreword
This document (prCEN/TS 839:2007) 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 document is currently submitted to the Formal Vote.
This document will supersede ENV 839:2002.
Significant technical differences between this standard and ENV 839:2002 are as follows:
a) change of assessment from visual examination for decay supplemented with culturing to assess
colonisation of the interior, to determination of loss in mass due to fungal decay, as well as visual
examination for decay of the surface and the interior of the test specimens. The visual examination is now
included as an optional means of assessment to determine colonisation and that this requires an
additional series of test specimens (Annex C);
b) addition in 7.5 of treated check test specimens for calculation of the correction value;
c) taking into account of the terms given in EN 1001-1and the definitions of EN 1001-2;
d) Introduction of an informative Annex E which considers minimisation of environmental and health hazards
caused by the use of this biological test.
This standard includes an Annex A, Annex C, Annex D and Annex E that are informative and an Annex B that
is normative.
prCEN/TS 839:2007 (E)
Introduction
This European Standard specifies a laboratory test method that provides 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 fungi into the test
specimen’s untreated interior 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 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.
prCEN/TS 839:2007 (E)
1 Scope
This European Standard specifies a test method for determining 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 that 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 that are being studied as active ingredients for application by superficial processes.
NOTE 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 3696:1987)
3 Terms and definitions
For the purposes of this European Standard, 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
[EN 1001-2:2005, 4.71]
3.2
supplier
sponsor of the test (person or company providing the sample of wood preservative to be tested)
[Adapted from EN 1001-2:2005, 4.83]
3.3
superficial application process
process that 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
[EN 1001-2:2005, 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
prCEN/TS 839:2007 (E)
specimens are treated with the wood preservative under test using the process and application rate specified
by the supplier.
NOTE Suitable application methods are brushing, pipetting and dipping.
The treated test specimens are exposed to attack by basidiomycetes in pure culture. The performance of the
test product is assessed in terms of its ability to prevent decay as determined by the maximum acceptable
loss in mass, and the absence of visible decay of the surface and the untreated interior.
5 Test materials and apparatus
5.1 Biological material
5.1.1 General
The test fungi to be used are as follows.
5.1.2 Obligatory fungus in all cases
Coniophora puteana (Schumacher ex Fries) Karsten (BAM Ebw. 15) on softwood.
Loss in mass of Scots pine sapwood in 16 weeks: a mass fraction of a minimum of 20 %.
5.1.3 Obligatory fungus for particular hazards
Coriolus versicolor (Linnaeus) Quélet (CTB 863A) on hardwood and/or on softwood as appropriate.
Loss in mass of beech in 16 weeks: a mass fraction of a minimum of 20 %.
Loss in mass of Scots pine sapwood in 16 weeks: a mass fraction of a minimum of 15 %.
5.1.4 Two species to be used compulsorily on the basis of the nature of the test product
For all products except creosote-type products:
Poria placenta (Fries) Cooke sensu J. Eriksson (
...
SLOVENSKI STANDARD
01-julij-2008
1DGRPHãþD
SIST-TS ENV 839:2004
=DãþLWQDVUHGVWYD]DOHV8JRWDYOMDQMHSUHYHQWLYQHXþLQNRYLWRVWL]DãþLWQLK
VUHGVWHYSURWLJOLYDPRGSUWRWURVQLFDP3RYUãLQVNRQDQDãDQMH
Wood preservatives - Determination of the protective effectiveness against wood
destroying basidiomycetes - Application by surface treatment
Holzschutzmittel - Bestimmung der vorbeugenden Wirksamkeit gegen holzzerstörende
Basidiomyceten - Anwendung mit Oberflächenverfahren
Produits de préservation du bois - Détermination de l'efficacité protectrice vis-a-vis des
champignons basidiomycetes lignivores - Application par traitement de surface
Ta slovenski standard je istoveten z: CEN/TS 839:2008
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION
CEN/TS 839
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2008
ICS 71.100.50 Supersedes ENV 839:2002
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 holzzerstörende Basidiomyceten -
basidiomycètes lignivores - Application par traitement de Anwendung mit Oberflächenverfahren
surface
This Technical Specification (CEN/TS) was approved by CEN on 5 November 2007 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 839:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Principle.6
5 Test materials and apparatus.6
5.1 Biological material.6
5.2 Products and reagents.7
5.3 Apparatus .8
6 Sampling of the preservative.8
7 Test specimens.8
7.1 Species of wood.8
7.2 Wood quality .9
7.3 Provision of the test specimens.9
7.4 Dimensions and density of test specimens.9
7.5 Number and distribution of test specimens .9
8 Procedure .10
8.1 Preparation of the untreated test specimens .10
8.2 Preparation of the treated test specimens.10
8.3 Exposure to fungi .12
8.4 Culture conditions and duration of test .12
8.5 Assessment of test.12
9 Statement of results .13
10 Test report .13
Annex A (informative) Test fungi .15
A.1 General information on maintenance and acquisition of test strains.15
A.2 Maintenance and treatment of test fungi .15
A.3 Information regarding obligatory fungi .16
Annex B (normative) Methods of sterilisation .18
B.1 Ionising radiation.18
B.2 Epoxyethane-based sterilant.18
B.3 Epoxypropane-based sterilant .18
B.4 Steam .19
Annex C (informative) Examination of colonisation .20
Annex D (informative) Example of a test report .23
Annex E (informative) Environmental, health and safety precautions within chemical/biological
laboratory .26
Bibliography .27
Foreword
This document (CEN/TS 839:2008) 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.
This document supersedes ENV 839:2002.
Significant technical differences between this standard and ENV 839:2002 are as follows:
a) change of assessment from, visual examination for decay supplemented with culturing to assess
colonisation of the interior, to determination of loss in mass due to fungal decay as well as visual
examination for decay of the surface and the interior of the test specimens. The visual examination is now
included as an optional means of assessment to determine colonisation and that this requires an
additional series of test specimens (Annex C).
b) addition in 7.5 of treated check test specimens for calculation of the correction value;
c) taking into account of the terms given in EN 1001-1and the definitions of EN 1001-2;
d) Introduction of an informative Annex E to take account of consideration for minimisation of environmental
and health hazards caused by the use of this biological test.
This standard includes Annexes A, C, D and E that are informative and an Annex B that is normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland 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 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.
NOTE 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 3696:1987).
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.
[EN 1001-2,4.71]
3.2
supplier
sponsor of the test (person or company providing the sample of wood preservative to be tested).
[Adapted from EN 1001-2,4.83]
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
[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 application rate specified
by the supplier.
NOTE Suitable application methods are brushing, pipetting and dipping.
The treated test specimens are exposed to attack by basidiomycetes in pure culture. The performance of the
test product is assessed in terms of its ability to prevent decay as determined by the maximum acceptable
loss in mass and the absence of visible decay of the surface and the untreated interior.
5 Test materials and apparatus
5.1 Biological material
The test fungi to be used are as follows:
5.1.1 Obligatory fungus in all cases
Coniophora puteana (Schumacher ex Fries) Karsten (BAM Ebw. 15) on softwood.
Loss in mass of Scots pin
...
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