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
- Publication Date
- 11-Aug-2020
- Withdrawal Date
- 27-Feb-2021
- Technical Committee
- CEN/TC 38 - Durability of wood and derived materials
- Drafting Committee
- CEN/TC 38/WG 25 - External Factors and Preconditioning
- Current Stage
- 9020 - Submission to 2 Year Review Enquiry - Review Enquiry
- Start Date
- 15-Oct-2025
- Completion Date
- 15-Oct-2025
Relations
- Effective Date
- 19-Aug-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
EN 84:2020 is a standard published by the European Committee for Standardization (CEN). 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.
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.
EN 84:2020 has the following relationships with other standards: It is inter standard links to EN 84:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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.
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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,
...
표준 EN 84:2020은 목재 및 목재 기반 제품의 내구성과 관련된 매우 중요한 문서로, 처리된 목재의 생물학적 시험에 앞서 가속된 노화 과정을 평가하는 데 필요한 리치 방법을 명세합니다. 이 표준의 주요 범위는 다음과 같습니다: a) 생물학적 시험에 제출될 시험 시료의 사전 조건화; b) 리치 과정을 거친 처리된 시험 시료의 생물학적 시험 성능과 리치 과정을 거치지 않은 시험 시료의 성능을 비교하여 효과 손실을 평가하는 것. EN 84:2020의 강점은 다양한 응용의 유연성입니다. 처리된 목재뿐만 아니라, 처리되지 않은 목재, 수정된 목재 및 목재 기반 패널 제품 또한 이 방법을 적용할 수 있어, 다양한 재료의 내구성을 비교할 수 있는 가능성을 제공합니다. 이러한 다용성은 표준을 광범위한 연구와 산업에 적용할 수 있는 기반을 마련합니다. 또한, 이 문서는 생물학적 시험에 적합하도록 시료를 사전 조건화하는 체계적인 방법을 제공함으로써, 테스트의 일관성과 신뢰성을 높이는 데 기여합니다. EN 84:2020은 목재와 목재 기반 제품의 취약성을 평가하는 중요한 도구가 되며, 특히 환경적 요인에 대한 내구성을 연구하는 데 필수적인 기준을 제시합니다. 이 표준은 목재 산업의 생물학적 시험 효율성을 높이고, 산업계에서 요구되는 품질 기준을 충족하는 데 도움을 줄 것입니다.
SIST EN 84:2020は、木材および木質製品の耐久性に関する非常に重要な基準です。この文書では、特に生物学的試験の前に施された木材の加速劣化に関する浸出手続きを定義しています。これは、木材や木質製品の試験標本に適用でき、生物学的試験を実施する前の前処理として重要な役割を果たします。 この基準の目的は二つあり、一つは生物学的試験に先立って試験標本を前処理すること、もう一つは浸出処理を受けた試験標本と受けていない試験標本との間での効果の喪失を評価することです。このような評価手法は、木材保護処理の有効性や持続性を検討する際に不可欠です。浸出手続きは、無施剤の木材や改良木、木質パネル製品にも使用することができ、これにより幅広い適用性が確保されています。 SIST EN 84:2020の強みは、木材の生物学的特性を検討する際に、より信頼性の高いデータを提供できる点です。この基準に従うことにより、業界の専門家は、処理された木材の性能を客観的に評価し、より長持ちする製品の開発に貢献することができます。したがって、木材および木質製品の研究や製造において、この標準は非常に関連性が高く、重要な指針となっています。
The EN 84:2020 standard provides a comprehensive framework for evaluating the durability of wood and wood-based products through an accelerated ageing process that incorporates a leaching procedure. This document is particularly relevant for industries involved in wood preservation, as it delineates specific methods for preparing test specimens to simulate real-world conditions that treated wood may face over time. One of the key strengths of the EN 84:2020 standard is its dual applicability. It is not only relevant for pre-conditioning treated wood but also extends to untreated wood and modified wood products. This inclusiveness ensures that manufacturers can assess a broad spectrum of wood products, whether they have received preservative treatment or not. Thus, it assists in establishing a consistent approach to testing that enhances comparability among products in biological assessments. The scope of the document is clearly defined, highlighting two primary applications: first, the preparation of test specimens prior to biological testing, and second, the assessment of the effectiveness and longevity of treated wood based on comparative analysis against untreated versions. This clarity in scope allows for targeted implementation of the procedures, offering users a robust methodology to predict the real-world performance of wood products in various environmental conditions. Furthermore, the EN 84:2020 standard reinforces the importance of standardized testing in achieving reliable results, thus fostering confidence in the performance attributes of treated wood products. The methodical approach laid out in this standard provides a critical tool for manufacturers to ensure quality control and compliance with industry expectations, ultimately supporting innovation and advancement in wood preservation technologies. In conclusion, the EN 84:2020 standard stands out due to its comprehensive leaching procedure that meticulously prepares wood-based products for biological testing, ensuring durability assessments are relevant, standardized, and reflective of practical application in diverse environmental settings.
La norme EN 84:2020 traite de la durabilité du bois et des produits à base de bois, en spécifiant une méthode de lessivage applicable aux échantillons de test de bois ou de produits à base de bois qui seront par la suite soumis à des tests biologiques. Une des forces majeures de cette norme réside dans sa capacité à fournir un cadre méthodologique clair pour le pré-conditionnement des échantillons avant les tests biologiques, garantissant ainsi la fiabilité des résultats obtenus. De plus, la norme permet l'évaluation de la perte d'efficacité des traitements en comparant les performances d'échantillons traités ayant subi la procédure de lessivage à celles d'échantillons non soumis à ce traitement. Cela souligne l'importance du lessivage dans l'évaluation de l'efficacité des produits de traitement du bois, ce qui est essentiel pour les fabricants et les chercheurs. La norme EN 84:2020 est également pertinente car elle s'applique à divers types de matériaux, y compris le bois non traité, le bois modifié et les panneaux de bois, indépendamment de la réception d'un traitement préventif. Cette flexibilité permet une large adoption de la norme dans différents contextes de tests biologiques. Dans l’ensemble, la norme EN 84:2020 se confirme comme un document fondamental pour l'industrie du bois, apportant des directives solides sur le lessivage et l'évaluation de la durabilité des produits à base de bois.
Die Norm EN 84:2020 ist ein bedeutendes Dokument im Bereich der Dauerhaftigkeit von Holz- und holzbasierten Produkten. Sie legt eine standardisierte Methode für das Auslaugen von Prüfproben fest, die anschließend biologischen Tests unterzogen werden. Der Geltungsbereich dieser Norm ist sowohl für die Vorbehandlung von Prüfproben relevant als auch für die Bewertung des Wirkungsverlusts von behandelten Prüfstücken, die im Rahmen dieser Methode getestet werden. Ein wesentlicher Stärke der EN 84:2020 liegt in ihrer umfassenden Anwendbarkeit. Sie ist nicht nur auf behandeltes Holz begrenzt, sondern schließt auch unbehandeltes Holz, modifiziertes Holz und Holzwerkstoffe ein, wodurch sie eine breite Palette von Produkten abdeckt. Dies ermöglicht eine differenzierte Analyse der Dauerhaftigkeit verschiedener Holzarten und -produkte unter biologischen Bedingungen. Die Norm bietet eine klare und strukturierte Vorgehensweise, die eine konsistente Bewertung der Effektivität von Holzbehandlungen ermöglicht. Dies ist besonders relevant in der Holzindustrie, wo die Anforderungen an die Langlebigkeit und Beständigkeit von Produkten kontinuierlich steigen. Die Standardisierung des Auslaugungsverfahrens fördert nicht nur die Vergleichbarkeit der Ergebnisse zwischen verschiedenen Tests, sondern unterstützt auch die Forschung und Entwicklung neuer Holzprodukte mit verbesserten Eigenschaften. Insgesamt stellt die EN 84:2020 eine wertvolle Ressource für Hersteller, Forscher und Qualitätsprüfer dar, die sich mit der Haltbarkeit von Holz und holzbasierten Produkten beschäftigen. Die Norm trägt dazu bei, die Leistungsfähigkeit von Holzprodukten unter biologischen Bedingungen besser zu verstehen und zu optimieren.
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