prEN 16637-2
(Main)Construction products: Assessment of release of dangerous substances - Part 2: Horizontal dynamic surface leaching test
Construction products: Assessment of release of dangerous substances - Part 2: Horizontal dynamic surface leaching test
(1) This document specifies a dynamic surface leaching test (DSLT) which is aimed at determining the release per unit surface area as a function of time of inorganic and/or non-volatile organic substances from a monolithic, plate- or sheet-like product, when it is put into contact with an aqueous solution (leachant). The test method is not suitable for substances that are volatile under ambient conditions.
(2) This test is a parameter specific test focusing on identifying and specifying parameter specific properties tested under specified conditions. It is not aimed at simulating real situations. The application of results to specific intended conditions of use may be established by means of modelling (not included in this document).
(3) The test method applies to more or less regularly shaped test portions consisting of monolithic test pieces with minimum dimensions of 40 mm in all directions (volume > 64 000 mm3 (64 cm3)). It also applies to plate- or sheet-like products with surface areas of minimum 10 000 mm2 (100 cm2) exposed to the leachant. Products designed to drain water (e.g. draining tiles, porous asphalt) and monolithic granular products according to prEN 16637 1:—1), Table 1, are also tested by this test method. All products to be tested are assumed to maintain their integrity over a time frame relevant for the considered intended use.
(4) The modification for granular construction products with low hydraulic conductivity (Annex A) applies for granular particles with so little drainage capacity between the grains that percolation in percolation tests and in practice is nearly impossible.
(5) Metals, metallic coatings and organic coatings on metals are excluded from the scope of this document because the principles of this test (diffusion) are not obeyed by these products. Guidance on the need for testing of these products is under consideration.
(6) For some coatings (e.g. some renders with organic binders according to EN 15824 [9]) in intermittent contact to water, physical and chemical properties might be changed in permanent contact with water. For these products this document is not appropriate.
(7) Guidance on the applicability of the test method to a given product is outlined in prEN 16637 1.
NOTE 1 This test method is only applicable if the product is chemically stable and the matrix does not dissolve. For construction products that are possibly used in contact with water this is usually not the case as construction products are then supposed to be dimensionally stable. If a product possibly wears substantially in its intended use, the test cannot provide proper information. If the product contains a substantial amount of water-soluble compounds, e.g. gypsum or anhydrite, the matrix could (partially) dissolve and lead to dimensional instability of the test piece. In this case the test standard also cannot be used.
NOTE 2 Volatile organic substances include the low molecular weight substances in mixtures such as mineral oil.
NOTE 3 It is not always possible to optimize test conditions simultaneously for inorganic and organic substances. Optimum test conditions can also vary between different groups of organic substances. Test requirements for organic substances are generally more stringent than those for inorganic substances. The test conditions suitable for measuring the release of organic substances will generally also be applicable to inorganic substances.
Bauprodukte - Bewertung der Freisetzung von gefährlichen Stoffen - Teil 2: Horizontale dynamische Oberflächenauslaugprüfung
(1) Dieses Dokument legt eine dynamische Oberflächenauslaugprüfung (DSLT) fest, welche der Bestimmung der Freisetzung von anorganischen und/oder nichtflüchtigen organischen Stoffen je Oberflächeneinheit aus einem monolithischen, platten- oder bahnenartigen Produkt in Abhängigkeit von der Zeit dient, wenn diese Bauprodukte mit einer wässrigen Lösung (Auslaugmittel) in Berührung kommen. Das Prüfverfahren ist für Stoffe, die unter Umgebungsbedingungen flüchtig sind, nicht geeignet.
(2) Diese Prüfung ist eine parameterspezifische Prüfung, die auf die Identifizierung und Festlegung von parameterspezifischen Eigenschaften, die unter festgelegten Bedingungen geprüft werden, gerichtet ist. Sie hat nicht zum Ziel, reale Situationen nachzubilden. Die Anwendung der Ergebnisse auf spezifische Bedingungen der vorgesehenen Verwendung kann mittels Modellierung erfolgen (nicht in diesem Dokument enthalten).
(3) Das Prüfverfahren gilt für mehr oder weniger regelmäßig geformte Prüfmengen, die aus monolithischen Probestücken mit Mindestabmessungen von 40 mm in allen Richtungen bestehen [Volumen > 64 000 mm3 (64 cm3)]. Es gilt ebenso für platten- oder bahnenartige Produkte mit dem Auslaugmittel ausgesetzten Oberflächen von mindestens 10 000 mm² (100 cm²). Produkte, die zur Ableitung von Wasser entwickelt wurden (z. B. Traufenpflaster, Porenasphalt), sowie monolithische körnige Produkte nach prEN 16637 1:—1, Tabelle 1, sind ebenfalls mit diesem Prüfverfahren zu prüfen. Bei allen zu prüfenden Produkten wird davon ausgegangen, dass sie über einen für die betrachtete vorgesehene Verwendung maßgeblichen Zeitrahmen unversehrt bleiben.
(4) Die Modifikation für körnige Bauprodukte mit geringer Durchlässigkeit (Anhang A) gilt für körnige Partikel mit einem so geringen Wasserableitvermögen zwischen den Körnern, dass die Perkolation in Perkolationsprüfungen und in der Praxis nahezu unmöglich ist.
(5) Metalle, metallische Beschichtungen und organische Beschichtungen auf Metallen sind vom Anwendungsbereich dieses Dokuments ausgenommen, da die Grundsätze dieser Prüfung (Diffusion) von diesen Produkten nicht befolgt werden. Ein Leitfaden über die Notwendigkeit der Prüfung dieser Produkte steht zur Diskussion.
(6) Bei einigen Beschichtungen (z. B. einige Putze mit organischen Bindemitteln nach EN 15824 [9]), die zeitweilig mit Wasser in Berührung kommen, könnten physikalische und chemische Eigenschaften zu dauerhaftem Kontakt mit Wasser geändert werden. Für diese Produkte ist dieses Dokument nicht geeignet.
(7) Eine Anleitung zur Anwendbarkeit des Prüfverfahrens für ein bestimmtes Produkt ist in prEN 16637 1 enthalten.
ANMERKUNG 1 Dieses Prüfverfahren ist nur dann anwendbar, wenn das Produkt chemisch beständig ist und die Matrix sich nicht auflöst. Bei Bauprodukten, die bei ihrer Verwendung möglicherweise mit Wasser in Berührung kommen, ist das üblicherweise nicht der Fall, da solche Bauprodukte als maßbeständig gelten. Wenn ein Produkt bei seiner vorgesehenen Verwendung im beträchtlichen Maße abnutzt, kann die Prüfung keine angemessenen Informationen liefern. Wenn das Produkt eine erhebliche Menge wasserlöslicher Verbindungen enthält, z. B. Gips oder Anhydrit, ist eine (teilweise) Auflösung der Matrix möglich, was zu einer maßlichen Unbeständigkeit des Probestücks führt. In diesem Fall kann die Prüfnorm ebenfalls nicht angewendet werden.
ANMERKUNG 2 Flüchtige organische Stoffe schließen die in Gemischen wie z. B. Mineralöl enthaltenen Stoffe mit geringem Molekulargewicht ein.
ANMERKUNG 3 Es ist nicht immer möglich, die Prüfbedingungen für anorganische und organische Stoffe gleichzeitig zu optimieren. Optimale Prüfbedingungen können darüber hinaus je nach organischer Stoffgruppe variieren. Die Prüfanforderungen an organische Stoffe sind im Allgemeinen strenger als bei anorganischen Stoffen. [...]
Produits de construction - Évaluation du relargage de substances dangereuses - Partie 2 : Essai dynamique horizontal de lixiviation de surface
(1) Le présent document spécifie un essai de lixiviation dynamique de surface (DSLT) qui a pour objectif de déterminer le relargage par unité de surface en fonction du temps de substances inorganiques et/ou organiques non volatiles d’un produit monolithique, en plaque ou en feuille lorsqu’il est mis en contact avec une solution aqueuse (lixiviant). La méthode d’essai n’est pas adaptée aux substances qui sont volatiles dans des conditions ambiantes.
(2) Cet essai présente des paramètres spécifiques se concentrant sur l’identification et la spécification de propriétés propres aux paramètres soumis à essai dans des conditions spécifiques. Il n’est pas destiné à la simulation de situations réelles. L’application des résultats à des conditions spécifiques d’utilisation prévue peut être déterminée par modélisation (non incluse au présent document).
(3) La méthode d’essai s’applique à des prises d’essai de forme plus ou moins régulière constituées de pièces pour essai monolithiques présentant une dimension minimale de 40 mm dans toutes les directions (volume > 64 000 mm3 [64 cm3]). Elle s’applique également aux produits en plaque ou en feuille présentant une surface minimale de 10 000 mm2 (100 cm2) exposée au lixiviant. Les produits conçus pour drainer l’eau (tuyaux de drainage, asphalte poreux, par exemple) et les produits granulaires monolithiques conformément au prEN 16637 1:—1), Tableau 1, sont également soumis à essai selon cette méthode d’essai. Il est supposé que tous les produits à soumettre à essai conservent leur intégrité sur la période prise en considération pour l’utilisation prévue.
(4) L’essai modifié pour les produits de construction granulaires de faible conductivité hydraulique (Annexe A) s’applique aux particules granulaires présentant une capacité de drainage si faible entre les grains que la percolation est pratiquement impossible, que ce soit lors d’essais de percolation ou en pratique.
(5) Les métaux, revêtements métalliques et revêtements organiques appliqués sur des éléments métalliques sont exclus du domaine d’application du présent document, car ces produits ne répondent pas aux principes de cet essai (diffusion). Des recommandations relatives aux essais de ces produits sont à l’étude.
(6) Pour certains revêtements (tels que certains enduits de maçonnerie organiques conformément à l’EN 15824[9]) en contact intermittent avec l’eau, certaines propriétés physiques et chimiques peuvent être modifiées en cas de contact permanent avec l’eau. Le présent document n’est pas adapté à ces produits.
(7) Des recommandations relatives à l’applicabilité de la méthode d’essai à un produit donné sont données dans le prEN 16637 1.
[...]
Gradbeni proizvodi - Ocenjevanje sproščanja nevarnih snovi - 2. del: Horizontalni dinamični preskus izluževanja s površine
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 16637-2:2021
01-marec-2021
Gradbeni proizvodi - Ocenjevanje sproščanja nevarnih snovi - 2. del: Horizontalni
dinamični preskus izluževanja s površineConstruction products - Assessment of release of dangerous substances - Part 2:
Horizontal dynamic surface leaching test
Bauprodukte - Bewertung der Freisetzung von gefährlichen Stoffen - Teil 2: Horizontale
dynamische OberflächenauslaugprüfungProduits de construction - Evaluation de l‘émission de substances dangereuses - Partie
2: Essais horizontaux et dynamiques de la lixivation des surfacesTa slovenski standard je istoveten z: prEN 16637-2
ICS:
13.020.99 Drugi standardi v zvezi z Other standards related to
varstvom okolja environmental protection
91.100.01 Gradbeni materiali na Construction materials in
splošno general
oSIST prEN 16637-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16637-2:2021
DRAFT
EUROPEAN STANDARD
prEN 16637-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 91.100.01 Will supersede CEN/TS 16637-2:2014
English Version
Construction products: Assessment of release of
dangerous substances - Part 2: Horizontal dynamic surface
leaching test
Bauprodukte - Bewertung der Freisetzung von
gefährlichen Stoffen - Teil 2: Horizontale dynamische
Oberflächenauslaugprüfung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 351.If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16637-2:2021 E
worldwide for CEN national Members.---------------------- Page: 3 ----------------------
oSIST prEN 16637-2:2021
prEN 16637-2:2021 (E)
Contents Page
European foreword ...................................................................................................................................................... 4
Introduction .................................................................................................................................................................... 5
1 Scope .................................................................................................................................................................... 6
2 Normative references .................................................................................................................................... 7
3 Terms and definitions ................................................................................................................................... 7
4 Symbols and abbreviations ....................................................................................................................... 12
4.1 Symbols ............................................................................................................................................................ 12
4.2 Abbreviations ................................................................................................................................................. 12
5 Principle ........................................................................................................................................................... 13
5.1 General principle .......................................................................................................................................... 13
5.2 Number of eluates ......................................................................................................................................... 14
6 Reagents ........................................................................................................................................................... 15
6.1 General.............................................................................................................................................................. 15
6.2 Leachant ........................................................................................................................................................... 15
6.3 Rinsing solutions ........................................................................................................................................... 15
7 Equipment ....................................................................................................................................................... 15
8 Sample preparation ..................................................................................................................................... 16
8.1 Provisions on the laboratory sample .................................................................................................... 16
8.2 Provisions on test sample and test portion ......................................................................................... 16
8.3 Determination of the geometric surface area .................................................................................... 17
8.3.1 General.............................................................................................................................................................. 17
8.3.2 Regular test pieces ....................................................................................................................................... 18
8.3.3 Test pieces thinner than 40 mm, such as sheet-like products with regular geometric
area .................................................................................................................................................................... 18
8.3.4 Test pieces with partly irregular side face .......................................................................................... 18
8.3.5 Irregular test pieces without any regular sides ................................................................................. 19
9 Test procedure ............................................................................................................................................... 19
9.1 Testing conditions ........................................................................................................................................ 19
9.2 Step 1 of the leaching procedure ............................................................................................................. 20
9.3 Steps 2-8 of the leaching procedure ....................................................................................................... 21
9.4 Measuring the loss of weight .................................................................................................................... 22
9.5 Further preparation of the eluates for analysis and analysis steps ........................................... 22
9.6 Blank test ......................................................................................................................................................... 22
10 Evaluation of measurement results ....................................................................................................... 23
10.1 Expression of results in concentrations ............................................................................................... 23
10.2 Expression of results in terms of area related release .................................................................... 23
10.3 Calculation of release mechanism .......................................................................................................... 24
10.4 Calculating the loss of weight ................................................................................................................... 24
11 Documentation and test report ............................................................................................................... 25
12 Test performance .......................................................................................................................................... 26
13 Indirect methods ........................................................................................................................................... 27
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13.1 Definition ......................................................................................................................................................... 27
13.2 Provisions ........................................................................................................................................................ 27
13.3 Examples of indirect methods.................................................................................................................. 27
Annex A (informative) Method for granular construction products with low hydraulic
conductivity (GLHC) ..................................................................................................................................... 28
A.1 Scope ................................................................................................................................................................. 28
A.2 Terms, definitions and abbreviations ................................................................................................... 28
A.3 Principle ........................................................................................................................................................... 28
A.4 Equipment ....................................................................................................................................................... 28
A.5 Sampling .......................................................................................................................................................... 30
A.6 Procedure ........................................................................................................................................................ 30
A.7 Data handling and reporting .................................................................................................................... 33
Annex B (informative) Assessment of release mechanisms (if required) ........................................... 34
B.1 Overview of release mechanisms ........................................................................................................... 34
B.2 Procedure of identification of release mechanisms ........................................................................ 35
B.3 Concentrations close to the limit of quantification .......................................................................... 37
B.4 Diffusion controlled release of a substance ........................................................................................ 38
B.5 Dissolution controlled release of a substance ................................................................................... 41
B.6 Other release mechanism .......................................................................................................................... 42
B.7 Calculation of release .................................................................................................................................. 44
B.8 Examples .......................................................................................................................................................... 46
B.9 Interpretation of shortened DSL tests for FPC ................................................................................... 61
Annex C (informative) Examples of the test set up for construction products (DSLT).................... 64
Annex D (informative) Examples of data about the L/A ratio ................................................................... 65
Annex E (informative) Summary of cumulative results prEN 16637-2 (64 days) ............................. 66
E.1 Repeatability and reproducibility limits ............................................................................................. 66
E.2 Inorganic substances ................................................................................................................................... 67
E.3 Organic substances ...................................................................................................................................... 70
Annex F (informative) Uncertainty in surface measurements with the aluminium foil
method .............................................................................................................................................................. 71
Bibliography ................................................................................................................................................................. 72
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European foreword
This document (prEN 16637-2:2021) has been prepared by Technical Committee CEN/TC 351
“Construction Products: Assessment of release of dangerous substances”, the secretariat of which is
held by NEN.This document is currently submitted to the CEN Enquiry.
This document will supersede CEN/TS 16637-2:2014.
The main changes compared to the previous edition are as follows:
— Transfer of technical specification into European Standard (see Clause 12 and Annex E);
— Addition of requirements on the number of eluates (see 5.2);— Addition of requirements on the determination of the geometric surface area for test pieces thinner
than 40 mm (see 8.3.3);— Addition of information on the determination of the geometric surface area for irregular test pieces
(see Annex F);— Updating of normative and informative cross-references.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.This document was elaborated on the basis of CEN/TS 15863 [2], which is based on NEN 7375 [3].
This document specifies a dynamic surface leaching test for determination of surface dependent release
of substances from monolithic or plate-like or sheet-like construction products or granular construction
products with low hydraulic conductivity under standardized conditions.EN 16637, Construction products: Assessment of release of dangerous substances, consists of the
following parts:— Part 1: Guidance for the determination of leaching tests and additional testing steps,
— Part 2: Horizontal dynamic surface leaching test,— Part 3: Horizontal up-flow percolation test.
prEN 16637-1 deals with the determination and use of test methods for leaching of construction
products taking specific situations into account. prEN 16637-3 specifies an up-flow percolation test to
determine the leaching behaviour of granular construction products under standardized percolation
conditions.Background information on characterization of leaching behaviour of construction products can be
found in Technical Reports provided by CEN/TC 351 (i.e. CEN/TR 16098 [4], CEN/TR 16496 [5]).
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prEN 16637-2:2021 (E)
Introduction
The European Standards prEN 16637-1, prEN 16637-2 and prEN 16637-3 are developed to assess the
release of regulated dangerous substances (RDS) from construction products into soil, surface water
and groundwater in the framework of Mandate M/366. The horizontal test methods developed under
the Mandate M/366 are intended to be used to show compliance with notified regulations. The tests
cover the release of substances from construction products and in particular, those that are regulated in
notified regulations in one or more EU Member States.prEN 16637-1 specifies how the CEN Technical Product Committees and EOTA experts should
determine the appropriate leaching test for the determination of the release of RDS from a construction
product into soil, surface water and groundwater. prEN 16637-1 gives background information for
CEN Technical Product Committees on the following aspects:a) description of the intended conditions of use of the construction product (e.g. above ground
exposed to the precipitation, or shielded from direct infiltration, in surface or groundwater) with
respect to the release of RDS into soil, surface water and groundwater;b) identification of main release mechanisms, and the appropriate leaching test for a given
construction product.prEN 16637-2 specifies a horizontal test to assess surface dependent release from monolithic, plate-like
or sheet-like construction products (tank test).prEN 16637-3 specifies a horizontal test to assess release from granular construction products.
The test methods can be used for both steps in the hierarchy (type testing (TT) and factory production
control (FPC)) and form the reference tests for the intended uses and conditions specified in
prEN 16637-1. In this hierarchy of testing conditionally “indirect tests” can be used, but are not
specified.The release of substances upon contact with water results in a potential risk to the environment during
the intended use of construction products. The intent of these tests is to identify the leaching behaviour
of construction products and thereby allow assessments of the release of RDS from such products to
soil, surface water and groundwater under intended conditions of use in relation to CE marking and
assessment and verification of constancy of performance.This document does not address impact assessment. However, since the test methods described in the
document may be used in the context of impact assessments and regulation based on impact
assessments, some guidance on this issue is provided in prEN 16637-1:— , Annex A (informative).
In addition to existing validation results, in 2011 CEN/TC 351 began an extensive research program on
robustness validation of the existing tank leaching and percolation tests. This was carried out by a
consortium of European experts on 20 construction products to unify differences from the protocols of
the different CEN Members and to check the influence of testing conditions on the test result (e.g.
temperature, flow rate, renewal scheme). The results ([6]) of the research program confirmed the
robustness of the horizontal tests known from former works. Conclusions from the program have been
implemented into the Technical Specifications for the test methods. The performance of the leaching
tests regarding repeatability and reproducibility was deduced from a second validation step and
respective data ([7], [8]) are included in this document and in prEN 16637-3:— .---------------------- Page: 7 ----------------------
oSIST prEN 16637-2:2021
prEN 16637-2:2021 (E)
1 Scope
(1) This document specifies a dynamic surface leaching test (DSLT) which is aimed at determining the
release per unit surface area as a function of time of inorganic and/or non-volatile organic substances
from a monolithic, plate- or sheet-like product, when it is put into contact with an aqueous solution
(leachant). The test method is not suitable for substances that are volatile under ambient conditions.
(2) This test is a parameter specific test focusing on identifying and specifying parameter specific
properties tested under specified conditions. It is not aimed at simulating real situations. The
application of results to specific intended conditions of use may be established by means of modelling
(not included in this document).(3) The test method applies to more or less regularly shaped test portions consisting of monolithic test
3 3pieces with minimum dimensions of 40 mm in all directions (volume > 64 000 mm (64 cm )). It also
2 2applies to plate- or sheet-like products with surface areas of minimum 10 000 mm (100 cm ) exposed
to the leachant. Products designed to drain water (e.g. draining tiles, porous asphalt) and monolithic
granular products according to prEN 16637-1:— , Table 1, are also tested by this test method. All
products to be tested are assumed to maintain their integrity over a time frame relevant for the
considered intended use.(4) The modification for granular construction products with low hydraulic conductivity (Annex A)
applies for granular particles with so little drainage capacity between the grains that percolation in
percolation tests and in practice is nearly impossible.(5) Metals, metallic coatings and organic coatings on metals are excluded from the scope of this
document because the principles of this test (diffusion) are not obeyed by these products. Guidance on
the need for testing of these products is under consideration.(6) For some coatings (e.g. some renders with organic binders according to EN 15824 [9]) in
intermittent contact to water, physical and chemical properties might be changed in permanent contact
with water. For these products this document is not appropriate.(7) Guidance on the applicability of the test method to a given product is outlined in prEN 16637-1.
NOTE 1 This test method is only applicable if the product is chemically stable and the matrix does not dissolve.
For construction products that are possibly used in contact with water this is usually not the case as construction
products are then supposed to be dimensionally stable. If a product possibly wears substantially in its intended
use, the test cannot provide proper information. If the product contains a substantial amount of water-soluble
compounds, e.g. gypsum or anhydrite, the matrix could (partially) dissolve and lead to dimensional instability of
the test piece. In this case the test standard also cannot be used.NOTE 2 Volatile organic substances include the low molecular weight substances in mixtures such as mineral
oil.NOTE 3 It is not always possible to optimize test conditions simultaneously for inorganic and organic
substances. Optimum test conditions can also vary between different groups of organic substances. Test
requirements for organic substances are generally more stringent than those for inorganic substances. The test
conditions suitable for measuring the release of organic substances will generally also be applicable to inorganic
substances.---------------------- Page: 8 ----------------------
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2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15934, Sludge, treated biowaste, soil and waste - Calculation of dry matter fraction after
determination of dry residue or water contentprEN 16637-1:— , Construction products: Assessment of release of dangerous substances - Part 1:
Guidance for the determination of leaching tests and additional testing stepsEN 17087, Construction products: Assessment of release of dangerous substances - Preparation of test
portions from the laboratory sample for testing of release and analysis of content
CEN/TS 17195, Construction products: Assessment of release of dangerous substances - Analysis of
inorganic substances in eluatesEN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
EN ISO 5667-3, Water quality - Sampling - Part 3: Preservation and handling of water samples
(ISO 5667-3)3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp— IEC Electropedia: available at http://www.electropedia.org/
3.1
eluate
solution obtained from a leaching test
[SOURCE: EN 16687:2015 [10], 4.2.7]
3.2
laboratory sample
sample or sub-sample(s) sent to or received by the laboratory
Note 1 to entry: When the laboratory sample is further prepared by subdividing, cutting, sawing, coring, drying,
grinding, mixing, curing or by combinations of these operations, the result is the test sample. When no preparation
of the laboratory sample is required, the laboratory sample is the test sample. A test portion is removed from the
test sample for the performance of the test or for analysis.Note 2 to entry: The laboratory sample is the final sample from the point of view of sample collection but it is the
initial sample from the point of view of the laboratory.[SOURCE: IUPAC 1990 [11], 2.5.5]
Under preparation. Stage at the time of publication: prEN 16637-1:2021.
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3.3
leachant
liquid that is brought into contact with the test portion in the leaching procedure
Note 1 to entry: Usually demineralized water is used as leachant for laboratory leaching tests.
[SOURCE: EN 16687:2015 [10], 4.2.6]3.4
leaching behaviour
release and change with time in release from a solid product in contact with a leachant as a function of
major release controlling factorsNote 1 to entry: Such factors are diffusion, pH, L/S or time.
[SOURCE: EN 16687:2015 [10], 4.2.9]
3.5
release mechanism
physical-chemical processes that control the release of substances from a solid construction product
into a leachantNote 1 to entry: In the case of monolithic products, the main release mechanisms for substances are diffusion,
dissolution, initial surface wash-off and depletion. Additional factors like pH or DOC also have influence on the
magnitude of the release.Note 2 to entry: The release mechanism for every substance can be determined using the results of the release
test (tank leaching test). Determination of the release mechanism is relevant for modelling of the source term and
so for determination of the effects on soil and water over a time period.[SOURCE: EN 16687:2015 [10], 4.2.17]
3.6
liquid to surface area ratio
L/A
ratio between the volume of liquid (L) which in a given step of the test is in contact with the exposed
surface area (A) of the test portionNote 1 to entry: L/A is expressed in l/m .
[SOURCE: EN 16687:2015 [10], 4.2.12]
3.7
monolithic product
product which has certain minimum dimensions and physical and mechanical properties that ensure its
integrity over a certain period of time in the intended conditions of useNote 1 to entry: Monolithic products are usually tested by a dynamic surface leaching test.
[SOURCE: EN 16687:2015 [10], 2.2.4]---------------------- Page: 10 ----------------------
oSIST prEN 16637-2:2021
prEN 16637-2:2021 (E)
3.8
plate-like product
product formed as a semi-rigid or rigid plate, which has certain minimum dimensions and physical and
mechanical properties that ensure its integrity over a certain period of time in the intended conditions
of useNote 1 to entry: Plate-like products are usually tested by a dynamic surface leaching test.
[SOURCE: EN 16687:2015 [10], 2.2.5]3.9
release
emission
liberation of chemical substances (e.g. non-volatile organic compounds, heavy metals, salts)
from a construction product into soil, surface water or ground water or into the leachant of a test
facilityNote 1 to entry: Release to soil, surface and groundwater can be expressed in terms of area related release (tank
leaching test, e.g. mg/m ) or in terms of mass related release (percolation test, e.g. mg/kg).
Note 2 to entry: The terms “emission” and “release” have fundamentally the same meaning. However it is often a
tradition to use the term “emission” when describing liberation of chemical substances or radiation into air and to
use the term “release” when describing the liberation of chemical substances into soil or water.
[SOURCE: EN 16687:2015 [10], 4.2.15]3.10
release rate
product specific rate describing the mass of
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