CEN/TC 38/WG 23 - Fungal testing (basidiomycetes-microfungi)

This document describes a method for assessing the durability of wood-based panels or analogue wood products to attack by wood-destroying basidiomycete fungi growing in pure culture.
The test method described in this document is intended to complement EN 113-2 with focus on specific aspects of wood-based panels or analogue wood products. This document is not intended to determine the effectiveness of wood preservatives used to prevent decay, which is covered by EN 113-1.
NOTE   This method can be used in conjunction with an appropriate ageing procedure, for example EN 73 or EN 84.
The method is applicable to uncoated, rigid wood-based panel products. It is applicable to the determination of the decay resistance of wood-based panel products:
-   made from naturally durable materials;
-   made from materials treated with preservatives prior to manufacture;
-   treated with a preservative which is introduced during manufacture, for example as an additive to the adhesive;
-   specific treatments to increase durability of wood-based panels, e.g. wood modification.
Annex A (informative) contains a guidance on sampling.
Annex B (normative) contains some methods of sterilization.
Annex C (informative) contains information on the culture vessels.
Annex D (informative) contains an example of a test report.
Annex E (informative) contains information on the test fungi.
Annex F (informative) contains the assessment of the results.
Annex G (informative) contains extra info on moisture dynamics, coatings, composites and impact of dimensions.

This document specifies a method of test for determining the natural durability of a timber against wood-destroying basidiomycetes cultured on a malt extract agar medium. The method is applicable to all timber species.
Furthermore this method can be used to test modified wood. The test method described in this document can be applied to specific wood species, commercial supplies of sawn timber, wood-based materials, wood treated with preservatives and modified wood, both thermally and chemically modified wood.
However, this document is not intended to determine the effectiveness of wood preservatives used to prevent decay.
NOTE 1 Determining the efficacy of wood preservatives used to prevent decay is the scope of EN 113-1. However, in addition to this and with some amendments, it might also be possible in some cases to test treated wood using the method described here.
NOTE 2 This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.
Annex A (informative) contains a guidance on sampling.
Annex B (normative) contains some methods of sterilization.
Annex C (informative) contains information on the culture vessels.
Annex D (informative) contains an example of a test report.
Annex E (informative) contains information on the test fungi.
Annex F (informative) contains the assessment of the results.

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.

This document specifies a method for determining the performance of a preservative, applied to the upper surface of the mortar test specimens, in preventing the growth of dry rot through the treated mortar when exposed to the test fungus.
This method is only applicable to masonry fungicides applied as a true solution of the preservative in water or dilute oil in water emulsion. It is not applicable to rods, pastes and other similar preservative types. This method is applicable to preservatives applied to masonry by brushing, spraying and/or injection techniques or mixed into rendering and plastering mortar for masonry.

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.

This European Standard specifies a method which is only suitable for testing preparations and systems which are intended to prevent the occurrence of blue stain fungi in wood in service. It is not suitable for assessing the temporary preventive effectiveness of anti-stain preservatives on round wood or on freshly cut wood. The method is not intended for the determination of the fungicidal properties of the surface coating applied to the wood after the priming coat. This European Standard lays down a method for determining the effectiveness of a preparation applied by e.g. brushing, spraying, spraying tunnel, dipping or vacuum and pressure treatments resulting in an equivalent retention of product in preventing the development of blue stain fungi in wood in service. It is also applicable where a primer paint is used in conjunction with the preservative system.This method is applicable to the following types of preparations or systems: Type A: fungicidal preparations with or without pigment, used in conjunction with unspecified varnishes or paint coatings;or Type B: fungicidal preparations with or without pigment, used in conjunction with specified varnishes or paint coatings;or Type C: fungicidal preparations with or without pigment, used without subsequent varnish or paint coating (e.g. stains).

This CEN Technical Specification specifies a method of test for determining the natural durability of a timber against soft rotting micro-fungi. The method is applicable to all timber species.
NOTE   This method may be used in conjunction with an ageing procedure, for example EN 73 or EN 84.

This European prestandard specifies a method of test for the determination of the preventive action of a wood preservative against basidiomycete fungi when the preservative is applied as a surface treatment to wood. This method is applicable to formulations of preservatives in a ready to use form as: water insoluble chemicals which are being studied as active fungicides or; - organic formulations, as supplied or as prepared in the laboratory by dilution of concentrates or; - organic water dispersible formulations as supplied or as prepared in the laboratory by dilution of concentrates ...

This European Prestandard specifies a method of test for determining the toxic effectiveness of a wood preservative, applied to wood by full impregnation, against the micro-fungi which cause soft rot of wood.
The method is applicable to testing of formulated products or of their active ingredients.
NOTE   A method suitable for undertaking screening tests of potential active ingredients is given in annex A.

This CEN Technical Specification specifies a method of test for determining the natural durability of a timber against wood destroying basidiomycetes cultured on an agar medium. The method is applicable to all timber species.
NOTE   This method may be used in conjunction with an ageing procedure, for example EN 73 or EN 84.

This European prestandard specifies a method for determining the performance of a preservative, applied to the upper surface of the mortar test specimens, in preventing the growth of dry rot through the treated mortar when exposed to the tests fungus. This method is only applicable to masonry fungicides applied as a true solution of the preservative in water or as a water-borne liquid emulsion-type preservative.

This European prestandard specifies a method for determining the performance of a preservative, applied to the upper surface of the mortar test specimens, in preventing the growth of dry rot through the treated mortar when exposed to the tests fungus. This method is only applicable to masonry fungicides applied as a true solution of the preservative in water or as a water-borne liquid emulsion-type preservative.

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.

This European Prestandard specifies a method of test 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 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.

This European Prestandard specifies a method for assessing the resistance of wood-based panel products to attack by wood-destroying basidiomycete fungi growing in pure culture.
The method is applicable to uncoated, rigid wood-based panel products. It is applicable to the determination of the decay resistance of wood-based panel products:
- made from naturally durable materials;
- made from materials treated with preservatives prior to manufacture;
- treated with a preservative which is introduced during manufacture, for example as an additive to the adhesive;
- treated with preservative after manufacture.
NOTE 1   This method can be used in conjunction with an appropriate ageing procedure, for example EN 73 or EN 84.
NOTE 2   Wood-based panel products that have received a preservative treatment after manufacture can be susceptible to attack through the cut edges of the test specimens and the decay resistance indicated can be less than that of complete panels used in service.