EN 73:2020+A1:2024

SLOVENSKI STANDARD
01-junij-2024
Trajnost lesa in lesnih proizvodov - Pospešeno staranje zaščitenega lesa pred
biološkim preskušanjem - Postopek izparevanja (vključno z dopolnilom A1)
Durability of wood and wood-based products - Accelerated ageing of treated wood prior
to biological testing - Evaporative ageing procedure
Dauerhaftigkeit von Holz und Holzprodukten - Beschleunigte Alterung von behandeltem
Holz vor biologischen Prüfungen - Verdunstungsbeanspruchung
Durabilité du bois et des produits dérivés - Épreuves de vieillissement accéléré des bois
traités avant essais biologiques - Épreuve d'évaporation
Ta slovenski standard je istoveten z: EN 73:2020+A1:2024
ICS:
71.100.50 Kemikalije za zaščito lesa Wood-protecting chemicals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 73:2020+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2024
EUROPÄISCHE NORM
ICS 71.100.50 Supersedes EN 73:2020
English Version
Durability of wood and wood-based products - Accelerated
ageing of treated wood prior to biological testing -
Evaporative ageing procedure
Durabilité du bois et des produits dérivés - Épreuves Dauerhaftigkeit von Holz und Holzprodukten -
de vieillissement accéléré des bois traités avant essais Beschleunigte Alterung von behandeltem Holz vor
biologiques - Épreuve d'évaporation biologischen Prüfungen - Verdunstungsbeanspruchung
This European Standard was approved by CEN on 24 February 2020 and includes Amendment approved by CEN on 18
December 2023.
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 73:2020+A1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Equipment . 5
6 Test specimens . 6
6.1 Definition and origin . 6
6.2 Number of test specimens . 6
7 Procedure. 6
7.1 Arrangement of the test specimens . 6
7.2 Starting and adjustment of the apparatus . 7
7.3 Ageing procedure . 7
7.4 Exposure period in the tunnel . 9
8 Destination of the test specimens after the evaporative ageing procedure . 9
9 Reference to this document in biological test reports . 9
Bibliography . 10

European foreword
This document (EN 73:2020+A1:2024) 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 August 2024, and conflicting national standards shall be
withdrawn at the latest by August 2024.
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.
!EN 73:2020 superseded EN 73:2014. Data using edition EN 73:2014 may still be used.
Compared to EN 73:2014 the following modifications have been made in EN 73:2020:"
— change of title;
— inclusion of untreated wood, modified wood and wood-based panel products in the Scope;
— inclusion of a statement regarding the maximum period of time permitted between the completion
of the ageing procedure and the start of the biological test procedure;
— inclusion of a requirement that this period of time be stated in the biological test report.
This document includes Amendment 1 approved by CEN on 18 December 2023.
This document supersedes EN 73:2020.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the United
Kingdom.
Introduction
During its service life, preservative-treated wood can be exposed to conditions which may cause the
volatilization and removal of the wood preservative thereby reducing its effectiveness.
This document provides a laboratory based method for ageing test specimens which are to be subject to
biological testing.
1 Scope
This document specifies an evaporative ageing procedure, applicable to test specimens of wood and
wood-based products which are subsequently subjected to biological tests.
NOTE The method can also be used for pre-conditioning of untreated wood, modified wood and wood-based
panel produc
...