SIST EN 113-1:2021
(Main)Durability of wood and wood-based products - Test method against wood destroying basidiomycetes - Part 1: Assessment of biocidal efficacy of wood preservatives
Durability of wood and wood-based products - Test method against wood destroying basidiomycetes - Part 1: Assessment of biocidal efficacy of wood preservatives
This document specifies a method for determining the efficacy of wood preservatives applied to wood by
penetration treatment against wood destroying basidiomycetes cultured on a malt extract agar medium.
The method is applicable to formulated products or to their active ingredients.
NOTE This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.
Annex A (informative) contains an example of a test report.
Annex B (informative) contains some methods of sterilization.
Annex C (informative) contains information on the test vessels.
Annex D (informative) contains information on test fungi.
Annex E (informative) contains a recommended but non-comprehensive list of optional fungi.
Dauerhaftigkeit von Holz und Holzprodukten - Prüfverfahren gegen Holz zerstörende Basidiomyceten - Teil 1: Bewertung der bioziden Wirksamkeit von Holzschutzmitteln
Dieses Dokument legt ein Verfahren zur Bestimmung der Wirksamkeit von Holzschutzmitteln gegen Holz zerstörende, auf Agarnährboden gezüchtete Basidiomyceten fest, nachdem die Mittel durch ein Tränkverfahren in das Holz eingebracht wurden.
Dieses Verfahren ist auf formulierte Produkte oder deren Wirkstoffe anwendbar.
ANMERKUNG Dieses Verfahren kann in Verbindung mit einer Alterungsbeanspruchung, z. B. EN 73 oder EN 84, angewendet werden.
Anhang A (informativ) enthält ein Beispiel für einen Prüfbericht.
Anhang B (informativ) enthält einige Sterilisationsverfahren.
Anhang C (informativ) enthält Informationen zu den Prüfgefäßen.
Anhang D (informativ) enthält Informationen zu Prüfpilzen.
Anhang E (informativ) enthält eine empfohlene unvollständige Liste von fakultativenPrüfpilzen.
Durabilité du bois et des matériaux dérivés du bois - Méthode d'essai vis-à-vis des champignons basidiomycètes - Partie 1 : Détermination de l'efficacité protectrice de produits de préservation
Le présent document décrit une méthode de détermination de l'efficacité d'un produit de préservation du bois, appliqué par traitement par imprégnation profonde, vis-à-vis des champignons basidiomycètes lignivores cultivés sur milieu malt-agar.
La méthode est applicable aux produits formulés ou à leurs matières actives.
NOTE Cette méthode peut être utilisée conjointement avec une épreuve de vieillissement, par exemple selon l'EN 73 ou l'EN 84.
L'Annexe A (informative) donne un exemple de rapport d'essai.
L'Annexe B (informative) donne plusieurs méthodes de stérilisation.
L'Annexe C (informative) donne des informations sur les flacons d'essai.
L'Annexe D (informative) donne des informations sur les champignons d'essai.
L'Annexe E (informative) donne une liste recommandée mais non exhaustive de champignons facultatifs.
Trajnost lesa in lesnih proizvodov - Preskusna metoda proti glivam prostotrosnicam - 1. del: Ocenjevanje biocidne učinkovitosti biocidnih proizvodov za les
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 113-1:2021
01-marec-2021
Nadomešča:
SIST EN 113:2002
SIST EN 113:2002/A1:2004
Trajnost lesa in lesnih proizvodov - Preskusna metoda proti glivam
prostotrosnicam - 1. del: Ocenjevanje biocidne učinkovitosti biocidnih proizvodov
za les
Durability of wood and wood-based products - Test method against wood destroying
basidiomycetes - Part 1: Assessment of biocidal efficacy of wood preservatives
Dauerhaftigkeit von Holz und Holzprodukten - Prüfverfahren gegen Holz zerstörende
Basidiomyceten - Teil 1: Bewertung der bioziden Wirksamkeit von Holzschutzmitteln
Durabilité du bois et des matériaux dérivés du bois - Méthode d'essai vis-à-vis des
champignons basidiomycètes - Partie 1 : Détermination de l'efficacité protectrice de
produits de préservation
Ta slovenski standard je istoveten z: EN 113-1:2020
ICS:
71.100.50 Kemikalije za zaščito lesa Wood-protecting chemicals
SIST EN 113-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 113-1:2021
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SIST EN 113-1:2021
EN 113-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 71.100.50 Supersedes EN 113:1996,
EN 113:1996/A1:2004
English Version
Durability of wood and wood-based products - Test
method against wood destroying basidiomycetes - Part 1:
Assessment of biocidal efficacy of wood preservatives
Durabilité du bois et des matériaux dérivés du bois - Dauerhaftigkeit von Holz und Holzprodukten -
Méthode d'essai vis-à-vis des champignons Prüfverfahren gegen Holz zerstörende Basidiomyceten
basidiomycètes - Partie 1 : Détermination de l'efficacité - Teil 1: Bewertung der bioziden Wirksamkeit von
protectrice de produits de préservation Holzschutzmitteln
This European Standard was approved by CEN on 2 November 2020.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 113-1:2020 E
worldwide for CEN national Members.
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SIST EN 113-1:2021
EN 113-1:2020 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principles . 6
5 Test material and apparatus . 6
5.1 Biological material . 6
5.1.1 General . 6
5.1.2 Obligatory fungi in all cases (see also Annex D) . 6
5.1.3 Obligatory fungus for particular uses (see also Annex D) . 7
5.1.4 Maintenance of strains . 7
5.2 Products and reagents . 7
5.2.1 Culture medium . 7
5.2.2 Solvents and diluents . 8
5.3 Apparatus . 8
5.3.1 Conditioning chamber . 8
5.3.2 Culture chamber . 8
5.3.3 Drying oven . 8
5.3.4 Treatment vessels . 8
5.3.5 Ballast . 8
5.3.6 Safety equipment and protective clothing . 8
5.3.7 Vacuum vessels . 9
5.3.8 Vacuum pump . 9
5.3.9 Kolle flasks or equivalent culture vessels . 9
5.3.10 Test specimen supports . 9
5.3.11 Drying vessel(s) . 9
5.3.12 Equipment for steam sterilization or access to a radiation source . 9
5.3.13 Ordinary laboratory equipment . 9
6 Sampling of the preservative . 9
7 Test specimens . 9
7.1 Wood species . 9
7.2 Wood quality . 10
2
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SIST EN 113-1:2021
EN 113-1:2020 (E)
7.3 Provision of 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 Conditioning of test specimens before treatment . 11
8.2 Treatment of test specimens . 11
8.2.1 Preparation of treatment solutions/dilutions . 11
8.2.2 Impregnation . 12
8.3 Drying and conditioning of test specimens after treatment . 12
8.4 Exposure to fungi . 13
8.5 Culture conditions and duration of test . 13
8.6 Assessment of test . 14
8.6.1 Examination of the test specimens . 14
8.6.2 Loss in mass caused by fungal attack . 14
8.6.3 Validity of results . 14
8.6.4 Assessment of results . 15
9 Statement of results . 15
10 Test report . 15
Annex A (informative) Example of a test report . 17
Annex B (normative) Methods of sterilization . 23
Annex C (informative) Culture vessels . 24
Annex D (informative) Test fungi . 27
Annex E (informative) Non-comprehensive list of optional fungi . 29
Bibliography . 31
3
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SIST EN 113-1:2021
EN 113-1:2020 (E)
European foreword
This document (EN 113-1:2020) 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 June 2021, and conflicting national standards shall be
withdrawn at the latest by June 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 113:1996 and EN 113:1996/A1:2004.
Test results obtained with earlier versions of EN 113 are still valid.
Compared to EN 113:1996 and EN 113:1996/A1:2004 the following major changes have been
introduced:
— This is now a first part of EN 113 corresponding to the EN 113:1996 document. Other parts relate
to a different scope.
— The title is changed;
— The obligatory fungi are indicated differently;
— The calculation of a correction factor (C) has been differently included;
— The methods for sterilization are updated;
— All annexes are informative except Annex B;
— Some additional validity requirements are introduced for control specimens.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
4
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SIST EN 113-1:2021
EN 113-1:2020 (E)
Introduction
This document describes a laboratory method of test, which gives a basis for the assessment of
effectiveness of a wood preservative against wood destroying basidiomycetes. By using this method it is
possible to determine the loading at which impregnated wood of a susceptible species can regarded as
adequately protected under the conditions of test.
This laboratory method provides one criterion by which the efficacy of a product can be assessed, and
this criterion should be used to judge the likely effectiveness of the preservative taking into account the
methods of application likely to be used.
The procedures described in this standard method are intended to be carried out by suitably trained
and/or supervised specialists. Appropriate safety precautions should be observed throughout the use of
the document.
5
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SIST EN 113-1:2021
EN 113-1:2020 (E)
1 Scope
This document specifies a method for determining the efficacy of wood preservatives applied to wood by
penetration treatment against wood destroying basidiomycetes cultured on a malt extract agar medium.
The method is applicable to formulated products or to their active ingredients.
NOTE This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.
Annex A (informative) contains an example of a test report.
Annex B (normative) contains some methods of sterilization.
Annex C (informative) contains information on the test vessels.
Annex D (informative) contains information on test fungi.
Annex E (informative) contains a recommended but non-comprehensive list of optional fungi.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
supplier
sponsor of a biological test of a wood preservative
4 Principles
Test specimens of a susceptible wood species impregnated with increasing concentrations of wood
preservative solutions and reference wood test specimens are exposed to attack by pure cultures of
basidiomycetes. After a prescribed period of incubation under defined conditions, the percentage loss in
dry mass of the test specimens is used to establish the biocidal efficacy of the product under test.
5 Test material and apparatus
5.1 Biological material
5.1.1 General
The test fungi to be used as follows:
5.1.2 Obligatory fungi in all cases (see also Annex D)
— Coniophora puteana (Schumach.) P. Karst (BAM Ebw. 15) on softwood.
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: a mass fraction of a minimum
20 %.
6
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SIST EN 113-1:2021
EN 113-1:2020 (E)
1
— Rhodonia placenta (Fr.) Niemelä, K.H. Larss. and Schigel (FPRL 280) on softwood.
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: a mass fraction of a minimum
20 %.
— Gloeophyllum trabeum (Persoon) Murrill (BAM Ebw. 109) on softwood.
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: a mass fraction of a minimum
20 %.
For testing efficacy against brown rot, only the use of treated softwood is required. The results of testing
treated softwoods against brown rot fungi are valid for hardwoods: additional testing of treated
hardwoods is not required.
5.1.3 Obligatory fungus for particular uses (see also Annex D)
2
— Trametes versicolor (L.) Lloyd (CTB 863 A) on hardwood and/or on softwood, as appropriate.
Loss in mass in percentage in 16 weeks of beech specimens: a mass fraction of a minimum 20 %; of Scots
pine sapwood specimens: a mass fraction of a minimum 15 %.
NOTE 1 Beech results could be used for softwoods if this is considered a tougher test (see EN 599-1).
3
NOTE 2 For specific regional uses or conditions, it is also possible to select other fungi on an optional basis .
5.1.4 Maintenance of strains
The strains shall be maintained and treated so that its virulence is conserved and ensured.
NOTE 1 For suggestions on maintenance options see Annex D.
The strains shall be maintained and treated (frequency of subculturing, alternation of culture media, etc.)
in accordance with the instructions of their laboratory of origin (see D.2).
NOTE 2 The parent strain is maintained in the laboratory of its origin so as to conserve and to ensure its vigour.
If tests are not undertaken regularly or if a strain shows signs of degeneration a new standard culture of
the strain should be obtained from the laboratory of its origin for each test (see D.2).
When new strains are received, the virulence shall be tested to ensure the strain can achieve the
minimum loss in mass (see 5.1.2 and 5.1.3).
5.2 Products and reagents
5.2.1 Culture medium
The culture medium is a malt agar medium with the following composition:
— malt extract; in concentrated form: (50 ± 0,5) g; in powder form: (40 ± 0,5) g;
— agar causing no inhibition of growth of fungi: (20 ± 0,5) g to (30 ± 0,5) g;
1
Former name: Poria placenta (Fries) Cooke sensu J. Eriksson [Synonym: Poria monticola Murrill]
2
Former name: Coriolus versicolor (Linnaeus) Quelet
3
See Annex E for a non-comprehensive list of optional fungi.
7
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SIST EN 113-1:2021
EN 113-1:2020 (E)
— de-ionized water; quantity to make up to 1000 g. Preferably use water conforming to grade 3 of
ISO 3696.
Prepare this medium by warming the mixture in a boiling water bath or a steam bath, stirring until
completely dissolved.
Place in each culture vessel a sufficient quantity of the medium to provide a minimum depth of 3 mm to
4 mm when in its in-use position. Close the vessels as specified in 5.3.9 and sterilize in the autoclave at
121°C for 20 min. Let the vessels cool in their in-use position.
5.2.2 Solvents and diluents
For water soluble preservatives:
— de-ionized water (see 5.2.1).
For preservatives to be diluted or dissolved in an organic solvent:
— suitably volatile liquids, that leave no residue in the wood having a toxic effect on the fungi at the end
of the post-treatment conditioning period.
NOTE Toluene and xylene of recognized analytical grade have been found suitable.
For oil-based preservatives:
— where the carrier oil remains in the wood after treatment and conditioning, the content of carrier oil
in the product should be kept at the level intended to be used in practice. Achieving a range of
retentions according to this document could require the dilution of the product to different
concentrations. Addition of additional carrier oil, which remains in the wood after conditioning,
should not be used as a method to adjust concentration of the product. In this case, a suitably volatile
solvent should be selected.
5.3 Apparatus
5.3.1 Conditioning chamber
Well ventilated and maintained at (20 ± 2) °C and (65 ± 5) % relative humidity.
5.3.2 Culture chamber
Incubator or room, dark and maintained at (22 ± 2) °C and (70 ± 5) % relative humidity.
5.3.3 Drying oven
Maintained at (103 ± 2) °C.
5.3.4 Treatment vessels
Of a material that does not react with their contents.
5.3.5 Ballast
To prevent floating of test specimens. The ballast shall not react with any materials with which they come
into contact during the test.
5.3.6 Safety equipment and protective clothing
Appropriate for the test product and the test solvents, to ensure the safety of the operator.
8
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SIST EN 113-1:2021
EN 113-1:2020 (E)
5.3.7 Vacuum vessels
Fitted with stopcocks.
5.3.8 Vacuum pump
Fitted with a pressure gauge and capable of attaining a pressure of (0,7 ± 0,1) kPa.
5.3.9 Kolle flasks or equivalent culture vessels
2
With a capacity of between 400 ml and 650 ml, providing a flat surface area of between 85 cm and
2
120 cm for the medium (see Figures C.1, C.2 and C.3 in Annex C) and close with a material that allows
for air exchange.
NOTE Kolle flasks are usually plugged with a wad of cotton wool. Other culture vessels are usually fitted with
leakproof lids, the centres of which are pierced with a round hole of typically 15 mm diameter and plugged with a
wad of cotton wool.
5.3.10 Test specimen supports
Made of glass, stainless steel or any other inert material, with no risk of having any effect on the culture
medium, the fungus, the wood or the impregnated product, or of being itself modified. The supports are
used to prevent direct contact of the specimens with the culture medium, but shall not separate them
from it by more than 3 mm.
If abnormally high moisture contents (see 8.6.3) are experienced consistently, use of specimen supports
of approximately 5 mm thick could help to control the problem. If thicker specimen supports are used,
this should be recorded in the test report.
5.3.11 Drying vessel(s)
Provided with a close-fitting cover and containing supports that will give minimum contact with the
treated test specimens to be placed on them. The vessels and supports shall be of materials that do not
react with the test solvent or test preservative.
5.3.12 Equipment for steam sterilization or access to a radiation source
See Annex B.
5.3.13 Ordinary laboratory equipment
Including a balance capable of weighing to an accuracy of 0,01 g and a desiccator with an efficient
desiccant (for example, silica gel).
6 Sampling of the preservative
Ensure that the sample of preservative shall be representative of the product to be tested. Samples shall
be stored and handled in accordance with any written recommendations from the supplier.
For the sampling of preservatives from bulk supplies, the procedure given in EN 212 should be used.
7 Test specimens
7.1 Wood species
The species of wood to be used shall be susceptible to attack by fungi and shall be readily impregnated
by liquids. The following species shall be used for the test:
Scots pine (Pinus sylvestris Linnaeus) sapwood for products intended to be used on softwoods.
9
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SIST EN 113-1:2021
EN 113-1:2020 (E)
Beech (Fagus sylvatica Linnaeus) for products intended to be used on hardwoods.
For testing products intended to be used on hardwoods against brown rot, Scots pine sapwood shall be
used. Scots pine sapwood is a representative matrix for efficacy testing with brown rot fungi.
Additional tests may be undertaken using other wood species corresponding to the above characteristics,
and of particular importance for certain countries, but if so, this shall be stated in the test report.
7.2 Wood quality
The wood shall be free from cracks, stain, decay, insect damage or other defects. The wood shall not have
been water-stored, floated, chemically treated or steamed or kiln-dried above 60 °C.
The Scots pine shall be exclusively sapwood containing little resin and having between 2,5 annual growth
rings per 10 mm and 8 annual growth rings per 10 mm. The proportion of late wood in the annual rings
shall not exceed 30 % of the whole.
The beech shall be even-grained, free from tyloses, discolouration and red heart. It shall have between 2
and 6 annual growth rings per 10 mm.
7.3 Provision of test specimens
Condition the wood to a mass fraction of (12 ± 2) % moisture content or conditioned at (65 ± 5) % RH
(relative humidity) and (20 ± 2) °C for at least 2 weeks. Cut the test specimens from planed strips having
a cross section of (25 × 15) mm, on which the growth rings may run in any direction with the exception
of a completely tangential orientation on the broad faces which is unacceptable.
The longitudinal faces shall be parallel to the direction of the grain. Transverse cuts shall be made neatly
to give sharp edges.
The test specimens shall originate from a minimum of three trees or shall be taken at random from a
stock originally of more than 500 specimens and originating from at least 5 planks.
7.4 Dimensions and density of test specimens
The dimensions of the test specimens, measured at a mass fraction of (12 ± 2) % moisture content or
conditioned at (65 ± 5) % RH (relative humidity) and 20 ± 2 °C for at least 2 weeks, shall be (50 ± 0,5)
mm x (25 ± 0,5) mm x (15 ± 0,5) mm.
NOTE 1 A two-prong electrical conductivity moisture meter is suitable for assessing moisture content.
The dimensions of at least 10 specimens should be controlled randomly. If they are within the required
specifications, it is not necessary to measure the whole batch. If one of the controlled specimen does not
fulfil the requirement all specimens in the batch should be measured.
3
The volume of each test specimen is theoretically 18,75 cm , but the dimensions of each test specimen
shall be checked so that the actual volume is known. If the tolerance is no more than ± 0,2 mm, the volume
3
of all specimens can be taken as 18,75 cm .
In a batch of treated specimens, the density of an individual specimen is permitted to differ by ± 10 %
from the mean value of the batch. This tolerance is increased to ± 20 % for the untreated test specimens.
The mean density of the test specimens used for the test shall be recorded in the test report.
7.5 Number and distribution of test specimens
The specimens are divided into:
— e Treated specimens;
1
10
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SIST EN 113-1:2021
EN 113-1:2020 (E)
— e Test specimens: these are the impregnated specimens (submitted to drying, conditioning,
1.1
and any appropriate ageing) subjected to attack by the wood destroying fungi. Use at least four
treated test specimens for each preservative concentration (including a solvent or diluent
control (concentration = 0)), for each fungus and for each wood species.
— e Check test specimens for calculation of the correction value: These are test specimens
1.2
treated in exactly the same way as the e test specimens, at least four per concentration, which
1.1
are placed; after drying, conditioning and any appropriate ageing in uninoculated culture
vessels, two in each vessel. Variations in mass of these specimens make it possible to determine
the correction value (C) of the variations in mass of the treated test specimens (e1.1) resulting
from factors other than attack by the test fungi (see 8.6.2).
— e Untreated specimens;
2
— e Control specimens: These are non-impregnated test specimens, equal in number to the
2.1
treated test specimens e and of the same wood species which are placed one in each culture
1.1
vessel with the treated test specimens.
— e Virulence control specimens: Six of these non-impregnated specimens of the
2.2
appropriate wood species are subjected to attack by each wood destroying fungus.
Mark each specimen so that it can be identified throughout the test.
It is advisable to treat more specimens than the minimum number required to select those having the
uptake nearest to the target.
8 Procedure
8.1 Conditioning of test specimens before treatment
Place the numbered test specimens in the oven (see 5.3.3) and leave them there for 18 h to 24
...
SLOVENSKI STANDARD
oSIST prEN 113-1:2018
01-december-2018
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Durability of wood and wood-based products - Test method against wood destroying
basidiomycetes - Part 1: Assessment of biocidal efficacy of wood preservatives
Dauerhaftigkeit von Holz und Holzprodukten - Prüfverfahren gegen Holz zerstörende
Basidiomyceten - Teil 1: Bewertung der bioziden Wirksamkeit von Holzschutzmitteln
Durabilité du bois et des matériaux dérivés du bois - Méthode d'essai vis-à-vis des
champignons basidiomycètes - Partie 1 : Détermination de l'efficacité protectrice de
produits de préservation
Ta slovenski standard je istoveten z: prEN 113-1
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
oSIST prEN 113-1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 113-1:2018
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oSIST prEN 113-1:2018
DRAFT
EUROPEAN STANDARD
prEN 113-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 71.100.50 Will supersede EN 113:1996
English Version
Durability of wood and wood-based products - Test
method against wood destroying basidiomycetes - Part 1:
Assessment of biocidal efficacy of wood preservatives
Durabilité du bois et des matériaux dérivés du bois - Dauerhaftigkeit von Holz und Holzprodukten -
Méthode d'essai vis-à-vis des champignons Prüfverfahren gegen Holz zerstörende Basidiomyceten
basidiomycètes - Partie 1 : Détermination de l'efficacité - Teil 1: Bewertung der bioziden Wirksamkeit von
protectrice de produits de préservation Holzschutzmitteln
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 38.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 113-1:2018 E
worldwide for CEN national Members.
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Contents Page
European foreword . 4
Introduction . 5
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principles . 6
5 Test material and apparatus . 6
5.1 Biological material . 6
5.1.1 General . 6
5.1.2 Obligatory fungi in all cases (see also Annex D) . 6
5.1.3 Obligatory fungus for particular hazards (see also Annex D) . 6
5.1.4 Maintenance of strains . 7
5.2 Products and reagents . 7
5.2.1 Culture medium . 7
5.2.2 Solvents and diluents . 7
5.3 Apparatus . 8
5.3.1 Conditioning chamber . 8
5.3.2 Culture chamber . 8
5.3.3 Drying oven . 8
5.3.4 Treatment vessels . 8
5.3.5 Ballast . 8
5.3.6 Safety equipment and protective clothing . 8
5.3.7 Vacuum vessels . 8
5.3.8 Vacuum pump . 8
5.3.9 Kolle flasks or equivalent culture vessels . 8
5.3.10 Test specimen supports . 8
5.3.11 Drying vessel(s) . 9
5.3.12 Equipment for steam sterilization or access to a radiation source . 9
5.3.13 Ordinary laboratory equipment . 9
6 Sampling of the preservative . 9
7 Classification, designation and coding . 9
7.1 Wood species . 9
7.2 Wood quality . 9
7.3 Provision of test specimens . 10
7.4 Dimensions and density of test specimens . 10
7.5 Number and distribution of test specimens . 10
8 Procedure . 11
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8.1 Preparation of test specimens . 11
8.1.1 Conditioning of test specimens before treatment . 11
8.2 Treatment of test specimens . 11
8.2.1 Preparation of treatment solutions/dilutions . 11
8.2.2 Impregnation . 11
8.3 Drying and conditioning of test specimens after treatment . 12
8.4 Exposure to fungi . 13
8.5 Culture conditions and duration of test . 13
8.6 Assessment of test . 13
8.6.1 Examination of the test specimens . 13
8.6.2 Loss in mass caused by fungal attack . 14
8.6.3 Validity of results . 14
8.6.4 Assessment of results . 15
9 Statement of results . 15
10 Test report . 15
Annex A (informative) Example of a test report . 17
Annex B (normative) Methods of sterilization . 23
B.1 Ionizing irradiation . 23
B.2 Steam . 23
Annex C (informative) Culture vessels . 24
Annex D (informative) Test fungi . 31
D.1 General information on maintaining and acquisition of test strains . 31
D.2 Maintenance and treatment of test fungi . 31
D.3 Information regarding obligatory fungi . 32
Annex E (informative) Non-comprehensive list of optional fungi . 34
Bibliography . 36
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European foreword
This document (prEN 113-1:2018) 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 CEN Enquiry.
This European Standard supersedes EN 113:1996 and EN 113:1996/A1:2004.
Compared to current EN 113, the following modifications are:
— a second part has been included;
— the first part corresponds to the EN 113:1996 document;
— the two parts of the new EN 113 deal with similar testing but relate to a different scope.
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Introduction
This document specifies a laboratory method of test, which gives a basis for the assessment of
effectiveness of a wood preservative against wood destroying basidiomycetes. By using this method it is
possible to determine the loading at which impregnated wood of a susceptible species may be regarded
as adequately protected under the conditions of test.
This laboratory method provides one criterion by which the efficacy of a product can be assessed, and
this criterion should be used to judge the likely effectiveness of the preservative taking into account the
methods of application likely to be used.
The procedures described in this standard method are intended to be carried out by suitably trained
and/or supervised specialists. Appropriate safety precautions should be observed throughout the use of
the standard.
1 Scope
This document specifies a method for determining the efficacy of wood preservatives applied to wood by
penetration treatment against wood destroying basidiomycetes cultured on a malt extract agar medium.
The method is applicable to formulated products or to their active ingredients.
NOTE This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.
Annex A (informative) contains an example of a test report.
Annex B (informative) contains some methods of sterilization.
Annex C (informative) contains information on the test vessels.
Annex D (informative) contains information on test fungi.
Annex E (informative) contains a recommended but non-comprehensive list of optional fungi.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
representative sample
sample having its physical or chemical characteristics identical to the volumetric average characteristics
of the total volume being sampled
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3.2
supplier
sponsor of the test
4 Principles
Test specimens of a susceptible wood species impregnated with increasing concentrations of wood
preservative solutions and reference timber test specimens are exposed to attack by pure cultures of
basidiomycetes. After a prescribed period of incubation under defined conditions, the percentage loss in
dry mass of the test specimens is used to establish the biocidal efficacy of the product under test.
5 Test material and apparatus
5.1 Biological material
5.1.1 General
The test fungi to be used as follows:
5.1.2 Obligatory fungi in all cases (see also Annex D)
— Coniophora puteana (Schumach.) P. Karst) (BAM Ebw. 15) on softwood:
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: minimum 20 % (m/m).
1
— Rhodonia placenta (Fr.) Niemelä, K.H. Larss. and Schigel (FPRL 280) on softwood:
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: minimum 20 % (m/m).
— Gloeophyllum trabeum (Persoon) Murrill (BAM Ebw. 109) on softwood:
Loss in mass in percentage in 16 weeks of Scots pine sapwood specimens: minimum 20 % (m/m).
5.1.3 Obligatory fungus for particular hazards (see also Annex D)
2
— Trametes versicolor (L.) Lloyd (CTB 863 A) on hardwood and/or on softwood, as appropriate:
Loss in mass in percentage in 16 weeks of beech specimens: minimum 20 % (m/m); of Scots pine sapwood
specimens: minimum 15 % (m/m).
3
NOTE For specific regional uses or conditions, it is also possible to select other fungi on an optional basis .
1
Former name: Poria placenta (Fries) Cooke sensu J. Eriksson [Synonym: Poria monticola Murrill]
2
Former name: Coriolus versicolor (Linnaeus) Quelet
3
See Annex E for a non-comprehensive list of optional fungi.
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5.1.4 Maintenance of strains
The strains shall be maintained and treated so that its virulence is conserved and ensured (see Annex D).
The strains shall be maintained and treated (frequency of subculturing, alternation of culture media, etc.)
in accordance with the instructions of their laboratory of origin (see D.2).
NOTE 1 The parent strain is maintained in the laboratory of its origin so as to conserve and to ensure its vigour.
If tests are not undertaken regularly or if a strain shows signs of degeneration a new standard culture of
the strain should be obtained from the laboratory of its origin for each test (see D.2).
When new strains are received, the virulence shall be tested to ensure the strain can achieve the minimum
loss in mass (see 5.1.2 and 5.1.3).
5.2 Products and reagents
5.2.1 Culture medium
The culture medium is a malt agar medium with the following composition:
— malt extract:
— in concentrated form: (50 ± 0,5) g; in powder form: (40 ± 0,5) g.
— agar causing no inhibition of growth of fungi: (20 ± 0,5) g to (30 ± 0,5) g;
— de-ionized water; quantity to make up to 1000 g.
NOTE Preferably use water conforming to grade 3 of ISO 3696.
Prepare this medium by warming the mixture in a boiling water bath or a steam bath, stirring until
completely dissolved.
Place in each culture vessel a sufficient quantity of the medium to provide a minimum depth of 3 mm to
4 mm when in its in-use position. Close the vessels as specified in 5.3.9 and sterilize in the autoclave at
121°C for 20 min. Let the vessels cool in their in-use position.
5.2.2 Solvents and diluents
For water soluble preservatives:
— de-ionized water (see 5.2.1).
For preservatives to be diluted or dissolved in an organic solvent:
— suitably volatile liquids, that leave no residue in the wood having a toxic effect on the fungi at the end
of the post-treatment conditioning period.
NOTE Toluene and xylene of recognized analytical grade have been found suitable.
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5.3 Apparatus
5.3.1 Conditioning chamber
Well ventilated and maintained at (20 ± 2)°C and (65 ± 5)% relative humidity.
5.3.2 Culture chamber
Incubator or room, dark and maintained at (22 ± 2)°C and (70 ± 5)% relative humidity.
5.3.3 Drying oven
Maintained at (103 ± 2)°C.
5.3.4 Treatment vessels
Of a material that does not react with their contents.
5.3.5 Ballast
To prevent floating of test specimens. The ballast shall not react with any materials with which they come
into contact during the test.
5.3.6 Safety equipment and protective clothing
Appropriate for the test product and the test solvents, to ensure the safety of the operator.
5.3.7 Vacuum vessels
Fitted with stopcocks.
5.3.8 Vacuum pump
Fitted with a pressure gauge and capable of attaining a pressure of 0,7 ± 0,1 kPa.
5.3.9 Kolle flasks or equivalent culture vessels
2
With a capacity of between 400 mL and 650 mL, providing a flat surface area of between 85 cm and
2
120 cm for the medium (see Figures 1, 2 and 3 in Annex C) and allowing air exchange.
NOTE Kolle flasks are usually plugged with a wad of cotton wool. Other culture vessels are usually fitted with
leakproof lids, the centres of which are pierced with a round hole of typically 15 mm diameter and plugged with a
wad of cotton wool.
5.3.10 Test specimen supports
Made of glass, stainless steel or any other inert material, that is to say, with no risk of having any effect
on the culture medium, the fungus, the wood or the product impregnated, or of being itself modified. The
supports are used to prevent direct contact of the specimens with the culture medium, but shall not
separate them from it by more than 3 mm.
If abnormally high moisture contents are experienced consistently, use of specimen supports of
approximately 5 mm thick may help to control the problem. If thicker specimen supports are used, this
should be recorded in the test report.
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5.3.11 Drying vessel(s)
Provided with a close-fitting cover and containing supports that will give minimum contact with the
treated test specimens to be placed on them. The vessels and supports shall be of materials that do not
react with the test solvent or test preservative.
5.3.12 Equipment for steam sterilization or access to a radiation source
See Annex B.
5.3.13 Ordinary laboratory equipment
Including a balance capable of weighing to an accuracy of 0,01 g and a desiccator with an efficient
desiccant (for example, silica gel).
6 Sampling of the preservative
Ensure that the sample of preservative shall be representative of the product to be tested. Samples shall
be stored and handled in accordance with any written recommendations from the supplier.
For the sampling of preservatives from bulk supplies, the procedure given in EN 212 should be used.
7 Classification, designation and coding
7.1 Wood species
The species of wood to be used shall be susceptible to attack by fungi and shall be readily impregnated
by liquids. The following species shall be used for the test:
— Scots pine (Pinus sylvestris Linnaeus) sapwood for products intended to be used on softwoods;
— Beech (Fagus sylvatica Linnaeus) for products intended to be used on hardwoods.
For testing products intended to be used on hardwoods against brown rot, Scots pine sapwood shall be
used.
Additional tests may be undertaken using other species corresponding to the above characteristics, and
of particular importance for certain countries, but if so this shall be stated in the test report.
7.2 Wood quality
The wood shall be free from cracks, stain, decay, insect damage or other defects. The wood shall not have
been water-stored, floated, chemically treated or steamed or kiln-dried above 60°C.
The Scots pine shall be exclusively sapwood containing little resin and having between 2,5 annual growth
rings per 10 mm and 8 annual growth rings per 10 mm. The proportion of late wood in the annual rings
shall not exceed 30 % of the whole.
The beech shall be even-grained, free from tyloses, discolouration and red heart. It shall have between 2
and 6 annual growth rings per 10 mm.
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7.3 Provision of test specimens
Condition the wood to (12 ± 2) % (m/m) moisture content or conditioned at 65 ± 5 % RH and 20 ± 2 °C
for at least 2 weeks. Cut the specimens from planed strips having a cross section of (25 × 15) mm, on
which the growth rings may run in any direction with the exception of a completely tangential orientation
on the broad faces which is unacceptable.
The longitudinal faces shall be parallel to the direction of the grain. Transverse cuts shall be made neatly
to give sharp edges.
The specimens shall originate from a minimum of three trees or shall be taken at random from a stock
originally of more than 500 specimens and originating from at least 5 planks.
7.4 Dimensions and density of test specimens
The dimensions of each specimen, measured at 12 ± 2 % (m/m) moisture content or conditioned at
65 ± 5 % RH and 20 ± 2 °C for at least 2 weeks, shall be (50 ± 0,5) mm x (25 ± 0,5) mm x (15 + 0,5) mm.
NOTE A two-prong electrical conductivity moisture meter is suitable for assessing moisture content.
3
The volume of each specimen is theoretically 18.75 cm , but the dimensions of each test specimen shall
be checked so that the actual volume is known. If the tolerance is no more than ± 0.2 mm, the volume of
3
all specimens can be taken as 18.75 cm .
In a batch of treated specimens, the density of an individual specimen is permitted to differ by ± 10 %
from the mean value of the batch. This tolerance is increased to ± 20 % for the untreated test specimens.
The mean density of the specimens used for the test shall be recorded in the test report.
7.5 Number and distribution of test specimens
The specimens are divided into:
— e Treated specimens:
1
— e Test specimens: these are the impregnated specimens (submitted to drying, conditioning,
1.1
and any appropriate ageing) subjected to attack by the wood destroying fungi. Use at least four
treated test specimens for each preservative concentration (including a solvent or diluent
control (concentration = 0)), for each fungus and for each timber species;
— e Check test specimens for calculation of the correction value: These are test specimens
1.2
treated in exactly the same way as the e test specimens, at least four per concentration, which
1.1
are placed, after drying, conditioning and any appropriate ageing in uninoculated culture vessels,
two in each vessel. Variations in mass of these specimens make it possible to determine the
correction value (C) of the variations in mass of the treated test specimens (e ) resulting from
1.1
factors other than attack by the test fungi.
— e Untreated specimens:
2
— e Control specimens: These are non-impregnated test specimens, equal in number to the
2.1
treated test specimens e and of the same wood species which are placed one in each culture
1.1
vessel with the treated test specimens;
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— e Virulence control specimens: Six of these non-impregnated specimens of the appropriate
2.2
timber species are subjected to attack by each wood destroying fungus.
Mark each specimen so that it can be identified throughout the test.
NOTE It is advisable to treat more specimens than the minimum number required to select those having the
uptake nearest to the target.
8 Procedure
8.1 Preparation of test specimens
8.1.1 Conditioning of test specimens before treatment
Place the numbered test specimens in the oven (see 5.3.3) and leave them there for 18 h to 24 h. Cool to
room temperature in a desiccator and weigh to the nearest 0.01 g to determine the initial dry mass, (m ).
0
Store the test specimens in the desiccator in order to keep them dry until impregnation.
In the case of supplementary tests (see 7.1) using species of wood other than beech and pine sapwood,
the drying time may be longer than 18 h; in any case, the drying time should be such that the test
specimens reach constant mass.
Calculate the mean density of the specimens of each species using the mean mass and the specimen
volume.
8.2 Treatment of test specimens
8.2.1 Preparation of treatment solutions/dilutions
Prepare a series of concentrations (by mass) of the preservative in the appropriate solvent or diluent (see
5.2.2). For solid products prepare a sufficient quantity of the solution of a concentration equal to, or
greater than, the highest concentration to be tested. Dilute, on a mass by mass basis, appropriate
quantities of this solution to provide a series of at least five concentrations distributed around the
expected toxic value.
For liquid products, dilute, on a mass by mass basis, appropriate quantities of the product to provide a
series of at least five concentrations distributed around the expected toxic value.
A solvent or diluent control, i.e. treatment at concentration 0 shall also be included in each test series.
If the approximate toxic values are unknown, the concentrations shall form a widely spaced geometric
progression for a first test, and a more closely spaced geometric or arithmetic progression for subsequent
tests.
All treatment solutions shall be freshly prepared.
8.2.2 Impregnation
The following procedure ensures the required complete impregnation of test specimens by the test
solutions:
— for each concentration place the test specimens, kept dry as described in 8.1.1 and of known dry mass
(m ) in one o
...
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