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BS EN 839:2014

BS EN 839:2014

$167.15

Wood preservatives. Determination of the protective effectiveness against wood destroying basidiomycetes. Application by surface treatment

Published By Publication Date Number of Pages
BSI 2014 34
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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.

PDF Catalog

PDF Pages PDF Title
6 Foreword
7 Introduction
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Principle
5 Test materials and apparatus
5.1 Biological material
5.1.1 Obligatory fungus in all cases
5.1.2 Obligatory fungus for particular hazards
5.1.3 Two species to be used compulsorily on the basis of the nature of the test product
10 5.1.4 Optional fungi
5.1.5 Maintenance of strains
5.2 Products and reagents
5.2.1 Culture medium
5.2.2 Solvents and diluents
11 5.2.3 Fumigant (if necessary)
5.2.4 End-seal compound
5.3 Apparatus
6 Sampling of the preservative
12 7 Test specimens
7.1 Species of wood
7.2 Wood quality
7.3 Provision of the test specimens
7.4 Dimensions and density of test specimens
13 7.5 Number and distribution of test specimens
8 Procedure
8.1 Preparation of the untreated test specimens
14 8.2 Preparation of the treated test specimens
8.2.1 Preparation
8.2.2 End-sealing
8.2.3 Treatment with the test wood preservative
8.2.4 Drying
15 8.2.5 Final end-sealing
8.2.6 Final conditioning
8.3 Exposure to fungi
8.4 Culture conditions and duration of test
8.5 Assessment of test
8.5.1 All test specimens
16 8.5.2 Examination of the treated test specimens (e1)
8.5.3 Validity of results
8.5.4 Interpretation of results
17 9 Statement of results
10 Test report
19 Annex A (informative) Test fungi
A.1 General information on maintenance and acquisition of test strains
A.2 Maintenance and treatment of test fungi
20 A.3 Information regarding obligatory fungi
22 Annex B (normative) Methods of sterilization
B.1 Ionizing radiation
B.2 Epoxyethane-based sterilant
23 B.3 Epoxypropane-based sterilant
B.4 Steam
24 Annex C (informative) Examination of colonisation
C.1 General
C.2 Procedure
C.3 Assessment of test
C.3.1 All test specimens
C.3.2 Untreated test specimens (c2)
C.3.3 Examination of the treated test specimens (c1)
25 C.4 Validity of results
C.5 Statement of results
26 Figure C.1 ― Splitting and sampling of treated test specimens
27 Annex D (informative) Example of a test report
28 Table D.1 — Virulence control test specimens; loss in mass in percentage
29 Table D.2 — Summary of results with Product Z
30 Annex E (informative) Environmental, health and safety precautions within chemical/biological laboratory
31 Bibliography

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BS EN 839:2014
$167.15