SIST EN 84:2020
(Main)Durability of wood and wood-based products - Accelerated ageing of treated wood prior to biological testing - Leaching procedure
Durability of wood and wood-based products - Accelerated ageing of treated wood prior to biological testing - Leaching procedure
This document specifies a method for leaching, applicable to test specimens of wood or wood-based products which are subsequently subjected to biological tests.
This document is applicable to:
a) the pre-conditioning of test specimens prior to their being subjected to a biological test; or
b) assessment of loss of effectiveness by comparing the performance in a biological test of treated test specimens subjected to this procedure with others that have not undergone any leaching procedure.
NOTE The method can also be used for pre-conditioning of untreated wood, modified wood and wood-based panel products, whether they received preservative treatment or not.
Dauerhaftigkeit von Holz und Holzprodukten - Beschleunigte Alterung von behandeltem Holz vor biologischen Prüfungen - Auswaschbeanspruchung
Dieses Dokument legt ein Verfahren zur Auswaschbeanspruchung fest, das für Prüfkörper aus Holz oder Holzprodukten anwendbar ist, die anschließend biologischen Prüfungen unterzogen werden.
Dieses Dokument ist anwendbar:
a) zur Vorbehandlung von Prüfkörpern vor einer biologischen Prüfung; oder
b) um eine mögliche Abnahme einer Wirksamkeit zu erfassen, indem bei einer biologischen Prüfung von behandelten Prüfkörpern die Eigenschaften von Prüfkörpern, die einem solchen Verfahren ausgesetzt waren, mit Eigenschaften jener Prüfkörper verglichen werden, die keiner Auswaschbeanspruchung ausgesetzt waren.
ANMERKUNG Dieses Verfahren kann auch zur Vorbehandlung von unbehandeltem Holz, modifiziertem Holz und Holzwerkstoff-Produkten mit oder ohne Zusatz von Holzschutzmitteln verwendet werden.
Durabilité du bois et des produits dérivés - Épreuves de vieillissement accéléré des bois traités avant essais biologiques - Épreuve de délavage
Le présent document spécifie une méthode de délavage, applicable aux éprouvettes de bois et de panneaux à base de bois qui sont ultérieurement soumises à des essais biologiques.
Le présent document est applicable pour :
a) le préconditionnement des éprouvettes avant leur soumission ultérieure à un essai biologique ; ou
b) l'évaluation de la perte de l'efficacité par comparaison dans un essai biologique, de la performance des éprouvettes traitées soumises à cette épreuve par rapport à d'autres n'ayant subi aucune épreuve de délavage.
NOTE La méthode peut aussi être utilisée pour le préconditionnement du bois non traité, du bois modifié et des panneaux à base de bois qu’ils aient ou non reçu un traitement avec un produit de préservation.
Trajnost lesa in lesnih proizvodov - Pospešeno staranje zaščitenega lesa pred biološkim preskušanjem - Postopek izpiranja
General Information
- Status
- Published
- Public Enquiry End Date
- 19-Dec-2018
- Publication Date
- 14-Sep-2020
- Technical Committee
- LLZ - Les, lesni izdelki in zaščita lesa
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 25-Aug-2020
- Due Date
- 30-Oct-2020
- Completion Date
- 15-Sep-2020
Relations
- Effective Date
- 01-Oct-2020
Overview
EN 84:2020 - "Durability of wood and wood-based products - Accelerated ageing of treated wood prior to biological testing - Leaching procedure" (CEN) specifies a standardized leaching procedure to simulate early loss of soluble preservative components before biological testing. The method is used to pre-condition test specimens of treated or untreated wood, modified wood and wood-based panels prior to exposure to fungi or insects, or to assess loss of effectiveness by comparison with non‑leached controls. EN 84:2020 supersedes EN 84:1997.
Key topics and technical requirements
- Principle: vacuum impregnation with water followed by immersion for a defined period to accelerate leaching of water‑soluble components.
- Water quality: use water complying with EN ISO 3696, grade 3.
- Conditioning: specimens conditioned at (20 ± 2) °C and (65 ± 5) % RH before/after leaching as required.
- Apparatus:
- Test vessels of inert material (glass for organic solvent systems or suitable plastics).
- Vacuum desiccator and pump capable of maintaining a pressure of 4 kPa.
- Non‑reactive weights for ballasting.
- Leaching procedure:
- Place specimens (do not mix different species/treatments in one vessel), cover with water and apply vacuum (4 kPa) for minimum 20 min; leave ≥2 h, then drain.
- Refill with fresh water at ~5:1 water:wood volume ratio and immerse for 14 days with nine water changes (end of day 1 and 2, then seven changes over remaining 12 days at 1–3 day intervals).
- Drying: condition specimens on non‑absorbent supports until constant mass (two consecutive weighings 24 h apart within ±0.1 g) or at least two weeks.
- Storage before biological testing: biological tests may start up to 12 months after leaching; the actual interval must be recorded.
Practical applications and users
- Laboratories performing biological efficacy tests of wood preservatives (fungal and insect resistance).
- Manufacturers of treated wood and wood-preserving chemicals for product development and quality control.
- Certification bodies and test houses assessing loss of preservative leachability and real‑world durability.
- Researchers studying accelerated ageing, environmental leaching of preservatives, and comparative performance of treatments. Practical benefits: ensures reproducible pre‑conditioning across labs, enables fair comparison of treated vs. control specimens, and simulates service exposure for water‑mobile preservative components.
Related standards
- EN 599-1 (Referenced in EN 84:2020): durability and efficacy testing of preventive wood preservatives.
- EN ISO 3696 (Water for analytical laboratory use) - referenced for required water quality.
For biological test reports, EN 84:2020 requires explicit citation of the standard, statement of the time between leaching and testing, conditioning temperature/RH, and any deviations from the method. Keywords: EN 84:2020, leaching procedure, accelerated ageing, treated wood, biological testing, wood preservatives, durability.
Frequently Asked Questions
SIST EN 84:2020 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Durability of wood and wood-based products - Accelerated ageing of treated wood prior to biological testing - Leaching procedure". This standard covers: This document specifies a method for leaching, applicable to test specimens of wood or wood-based products which are subsequently subjected to biological tests. This document is applicable to: a) the pre-conditioning of test specimens prior to their being subjected to a biological test; or b) assessment of loss of effectiveness by comparing the performance in a biological test of treated test specimens subjected to this procedure with others that have not undergone any leaching procedure. NOTE The method can also be used for pre-conditioning of untreated wood, modified wood and wood-based panel products, whether they received preservative treatment or not.
This document specifies a method for leaching, applicable to test specimens of wood or wood-based products which are subsequently subjected to biological tests. This document is applicable to: a) the pre-conditioning of test specimens prior to their being subjected to a biological test; or b) assessment of loss of effectiveness by comparing the performance in a biological test of treated test specimens subjected to this procedure with others that have not undergone any leaching procedure. NOTE The method can also be used for pre-conditioning of untreated wood, modified wood and wood-based panel products, whether they received preservative treatment or not.
SIST EN 84:2020 is classified under the following ICS (International Classification for Standards) categories: 71.100.50 - Wood-protecting chemicals. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 84:2020 has the following relationships with other standards: It is inter standard links to SIST EN 84:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 84:2020 is associated with the following European legislation: EU Directives/Regulations: 305/2011; Standardization Mandates: M/BC/CEN/87/10. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN 84:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2020
Nadomešča:
SIST EN 84:2002
Trajnost lesa in lesnih proizvodov - Pospešeno staranje zaščitenega lesa pred
biološkim preskušanjem - Postopek izpiranja
Durability of wood and wood-based products - Accelerated ageing of treated wood prior
to biological testing - Leaching procedure
Dauerhaftigkeit von Holz und Holzprodukten - Beschleunigte Alterung von behandeltem
Holz vor biologischen Prüfungen - Auswaschbeanspruchung
Durabilité du bois et des produits dérivés - Épreuves de vieillissement accéléré des bois
traités avant essais biologiques - Épreuve de délavage
Ta slovenski standard je istoveten z: EN 84:2020
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 84
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2020
EUROPÄISCHE NORM
ICS 71.100.50 Supersedes EN 84:1997
English Version
Durability of wood and wood-based products - Accelerated
ageing of treated wood prior to biological testing -
Leaching 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 de délavage biologischen Prüfungen - Auswaschbeanspruchung
This European Standard was approved by CEN on 24 February 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 84:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Material and apparatus . 4
5.1 Material . 4
5.2 Apparatus . 4
6 Test specimens . 5
6.1 Definition and origin . 5
6.2 Number of test specimens . 5
7 Procedure. 5
7.1 Leaching . 5
7.1.1 Impregnation with water . 5
7.1.2 Immersion in water . 6
7.2 Drying . 6
8 Destination of the test specimens after the leaching procedure . 6
9 Reference to this document in biological test reports . 6
Bibliography . 7
European foreword
This document (EN 84:2020) 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 February 2021, and conflicting national standards shall
be withdrawn at the latest by February 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 84:1997. Data using the 1997 edition of EN 84 may still be used.
Compared to EN 84:1997 the following modifications have been made:
— change of title;
— inclusion of untreated wood, modified wood and wood-based panel products in the Scope;
— addition of Clause 3 Terms and definitions, and renumbering of subsequent clauses and cross-
references;
— inclusion of a statement regarding the maximum period of time permitted between the completion
of the leaching procedure and the start of the biological test;
— inclusion of a requirement that this period of time be stated in the biological test report.
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,
...
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