Construction products - Assessment of release of dangerous substances - Part 2: Horizontal dynamic surface leaching test

CEN/TS 16637-2 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 Technical Specification). (3) 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. (4) 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 CEN/TS 16637-1:2014, 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. (5) Metals, metallic coatings and organic coatings on metals are excluded from the scope of CEN/TS 16637-2 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) in intermittent contact to water, physical and chemical properties might be changed in permanent contact with water. For these products CEN/TS 16637-2 is not appropriate. (7) Guidance on the applicability of the test method to a given product is outlined in CEN/TS 16637-1.

Bauprodukte - Bewertung der Freisetzung von gefährlichen Stoffen - Teil 2: Horizontale dynamische Oberflächenauslaugprüfung

(1) Diese Technische Spezifikation legt eine dynamische Oberflächenauslaugprüfung (DSLT) fest,  welche der Bestimmung der Freisetzung von anorganischen und/oder nicht flüchtigen organischen Stoffen je Oberflächeneinheit aus einem monolithischen, platten- oder blattartigen 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 dieser Technischen Spezifikation enthalten).
(3) 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.
(4) Das Prüfverfahren gilt für mehr oder weniger regelmäßig geformte Untersuchungsmengen, die aus monolithischen Prüfstücken mit Mindestabmessungen von 40 mm in allen Richtungen bestehen (Volumen  64 000 mm3 (64 cm3)). Es gilt ebenso für platten- oder blattartige 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 FprCEN/TS 166371:2013, 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.
(5) Metalle, metallische Beschichtungen und organische Beschichtungen auf Metallen sind vom Anwendungsbereich der FprCEN/TS 16637-2 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), die zeitweilig mit Wasser in Berührung kommen, könnten physikalische und chemische Eigenschaften zu dauerhaftem Kontakt mit Wasser geändert werden. Für diese Produkte ist FprCEN/TS 16637-2 nicht geeignet.
(7) Eine Anleitung zur Anwendbarkeit des Prüfverfahrens für ein bestimmtes Produkt ist in FprCEN/TS 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, sollte das üblicherweise nicht der Fall sein, da solche Bauprodukte maßbeständig sein sollten. Wenn ein Produkt bei seiner vorgesehenen Verwendung im beträchtlichen Maße abgenutzt werden kann, 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 Prüfstücks 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 gleichzeitig für anorganische und organische Stoffe zu optimieren, und die optimalen Prüfbedingungen können auch zwischen verschiedenen Gruppen organischer Stoffe verschieden sein.

Produits de construction - Evaluation de l‘émission de substances dangereuses - Partie 2: Essais horizontaux et dynamiques de la lixivation des surfaces

Gradbeni proizvodi - Ocenjevanje sproščanja nevarnih snovi - 2. del: Horizontalni dinamični preskus za izluževanje s površine

Specifikacija CEN/TS 16637-2 določa dinamični preskus za izluževanje s površine (DSLT), ki je namenjen določanju sproščanja na enoto površine kot funkcija časa anorganskih in/ali nehlapnih organskih snovi iz monolitnega proizvoda ali proizvoda v obliki plošče ali traku, kadar pride v stik z vodno raztopino (izluževalni medij). Preskusna metoda ni primerna za snovi, ki so hlapne pri okoljskih pogojih. (2) Ta preskus je preskus z določenimi parametri s poudarkom na opredelitvi in določanju lastnosti z določenimi parametri, preskušenih pod določenimi pogoji. Ni namenjen posnemanju resničnih razmer. Uporaba rezultatov za posebne nameravane pogoje uporabe se lahko določi z modeliranjem (ni vključeno v to tehnično specifikacijo). (3) Sprememba za zrnate gradbene proizvode z nizko hidravlično prevodnostjo (Dodatek A) se uporablja za zrnate delce s tako majhno zmogljivostjo odvodnjavanja med zrnci, da je precejanje pri preskusih precejanja in v praksi skoraj nemogoče. (4) Preskusna metoda se uporablja za bolj ali manj običajno oblikovane preskusne dele, ki jih sestavljajo monolitni preskusni delci z najmanjšimi merami 40 mm v vseh smereh (prostornina > 64000 mm3 (64 cm3)). Uporablja se tudi za proizvode v obliki plošče ali traku s površino najmanj 10000 mm2 (100 cm2), izpostavljene izluževalnemu mediju. Proizvodi, oblikovani za prepuščanje vode (npr. ploščice za odvodnjavanje, porozni asfalt) in monolitni zrnati proizvodi v skladu s preglednico 1 specifikacije CEN/TS 16637-1:2014 se prav tako preskusijo s to preskusno metodo. Predvideva se, da vsi proizvodi, ki se preskusijo, ohranijo svojo integriteto v časovnem okviru, ustreznem za obravnavano predvideno uporabo. (5) Kovine, kovinski premazi in organski premazi za kovine so izključeni iz obsega specifikacije CEN/TS 16637-2, ker ti proizvodi ne upoštevajo načel tega preskusa (difuzija). Navodila za potrebo po preskušanju teh proizvodov se pripravljajo. (6) Pri nekaterih premazih (npr. nekateri ometi z organskimi vezivi v skladu s standardom EN 15824) v občasnem stiku z vodo se lahko fizikalne in kemijske lastnosti spremenijo ob stalnem stiku z vodo. Specifikacija CEN/TS 16637-2 ni primerna za te proizvode. (7) Navodila za uporabnost preskusne metode za določen proizvod so podana v specifikaciji CEN/TS 16637-1.

General Information

Status
Published
Public Enquiry End Date
09-Jan-2013
Publication Date
28-Sep-2014
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Sep-2014
Due Date
15-Nov-2014
Completion Date
29-Sep-2014

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SLOVENSKI STANDARD
SIST-TS CEN/TS 16637-2:2014
01-november-2014

*UDGEHQLSURL]YRGL2FHQMHYDQMHVSURãþDQMDQHYDUQLKVQRYLGHO+RUL]RQWDOQL

GLQDPLþQLSUHVNXV]DL]OXåHYDQMHVSRYUãLQH
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

Produits de construction - Evaluation de l‘émission de substances dangereuses - Partie

2: Essais horizontaux et dynamiques de la lixivation des surfaces
Ta slovenski standard je istoveten z: CEN/TS 16637-2:2014
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
SIST-TS CEN/TS 16637-2:2014 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 16637-2:2014
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SIST-TS CEN/TS 16637-2:2014
TECHNICAL SPECIFICATION
CEN/TS 16637-2
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
August 2014
ICS 13.040.20; 19.040; 91.100.01
English Version
Construction products - Assessment of release of dangerous
substances - Part 2: Horizontal dynamic surface leaching test

Produits de construction - Evaluation de l'émission de Bauprodukte - Bewertung der Freisetzung von gefährlichen

substances dangereuses - Partie 2: Essais horizontaux et Stoffen - Teil 2: Horizontale dynamische

dynamiques de la lixivation des surfaces Oberflächenauslaugprüfung

This Technical Specification (CEN/TS) was approved by CEN on 25 February 2014 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their

comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available

promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)

until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels

© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16637-2:2014 E

worldwide for CEN national Members.
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Contents Page

Foreword ..............................................................................................................................................................4

Introduction .........................................................................................................................................................5

1 Scope ......................................................................................................................................................7

2 Normative references ............................................................................................................................7

3 Terms and definitions ...........................................................................................................................8

4 Symbols and abbreviations ............................................................................................................... 11

5 Principle ............................................................................................................................................... 12

6 Reagents .............................................................................................................................................. 13

7 Equipment ........................................................................................................................................... 13

8 Sample preparation ............................................................................................................................ 14

8.1 General ................................................................................................................................................. 14

8.2 Provisions on test sample and test portion ..................................................................................... 14

8.3 Determination of the geometric surface area .................................................................................. 16

8.3.1 General ................................................................................................................................................. 16

8.3.2 Regular test pieces ............................................................................................................................. 16

8.3.3 Test pieces with partly irregular side face ....................................................................................... 16

8.3.4 Irregular test pieces without any regular sides ............................................................................... 17

9 Test procedure .................................................................................................................................... 17

9.1 Testing conditions .............................................................................................................................. 17

9.2 Step 1 of the leaching procedure ...................................................................................................... 18

9.3 Steps 2 – 8 of the leaching procedure .............................................................................................. 19

9.4 Measuring the loss of weight ............................................................................................................ 20

9.5 Further preparation of the eluates for analysis and analysis steps .............................................. 20

9.6 Blank test ............................................................................................................................................. 20

10 Evaluation of measurement results .................................................................................................. 21

10.1 Expression of results in concentrations .......................................................................................... 21

10.2 Expression of results in terms of area related release ................................................................... 21

10.3 Calculation of release mechanism .................................................................................................... 22

10.4 Calculating the loss of weight ........................................................................................................... 22

11 Documentation and test report ......................................................................................................... 22

12 Test performance ................................................................................................................................ 24

13 Indirect methods ................................................................................................................................. 24

13.1 Definition ............................................................................................................................................. 24

13.2 Provisions ............................................................................................................................................ 24

13.3 Examples of "indirect" methods ....................................................................................................... 24

Annex A (normative) Method for Granular construction products with Low Hydraulic Conductivity

(GLHC) ................................................................................................................................................. 25

A.1 Scope ................................................................................................................................................... 25

A.2 Terms, definitions and abbreviations ............................................................................................... 25

A.3 Principle ............................................................................................................................................... 25

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A.4 Equipment ............................................................................................................................................ 25

A.5 Sampling............................................................................................................................................... 26

A.6 Procedure ............................................................................................................................................. 26

A.7 Data handling and reporting............................................................................................................... 30

Annex B (normative) Assessment of release mechanisms (if required) .................................................... 31

B.1 Overview of release mechanisms ...................................................................................................... 31

B.2 Procedure of identification of release mechanisms ........................................................................ 32

B.3 Concentrations close to the limit of quantification ......................................................................... 33

B.4 Diffusion controlled release of a substance ..................................................................................... 34

B.5 Dissolution controlled release of a substance ................................................................................. 36

B.6 Other release mechanism ................................................................................................................... 37

B.7 Calculation of release ......................................................................................................................... 39

B.8 Examples .............................................................................................................................................. 41

Annex C (informative) Examples of the test set up for construction products (DSLT) ............................. 56

Annex D (informative) Examples of data about the L/A ratio ........................................................................ 57

Bibliography ...................................................................................................................................................... 58

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Foreword

This document (CEN/TS 16637-2:2014) 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.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

This Technical Specification was elaborated on the basis of CEN/TS 15863 [1], which is based on

NEN 7375:2005 [2].

This Technical Specification 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.

CEN/TS 16637-1 deals with the determination and use of test methods for leaching of construction products

taking specific situations into account. Technical Specification FprCEN/TS 16637-3 (in preparation) 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 [3], CEN/TR 16496 [4]).

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,

Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,

Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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Introduction

The informative introduction describes the interactions and interrelations between the three Technical

Specifications CEN/TS 16637-1, CEN/TS 16637-2 and FprCEN/TS 16637-3 (in preparation) developed to

assess the release of dangerous substances from construction products into soil, surface water and ground

water in the framework of the 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.

CEN/TS 16637-1 specifies how the CEN Technical Product Committees and EOTA experts are to determine

the appropriate release method for the determination of the release of Regulated Dangerous Substances from

a construction product into soil, surface water and groundwater.

CEN/TS 16637-2 and FprCEN/TS 16637-3 (in preparation) contain the two horizontal leaching tests that are

needed to address the leaching properties of the construction products. CEN/TS 16637-2 describes a test to

assess surface dependent release from monolithic, plate-like or sheet-like construction products while

FprCEN/TS 16637-3 (in preparation) describes a test to assess release from granular construction products.

The test methods specified in CEN/TS 16637-2 and FprCEN/TS 16637-3 (in preparation) can be used for both

steps in the hierarchy (type testing and factory production control) and are supposed to be used as the

reference test for the intended uses and conditions specified in CEN/TS 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 Regulated Dangerous Substances

from such products to soil, surface water and groundwater under intended conditions of use in relation to CE

marking.

Technical Product Committees are expected to apply the test standards developed in CEN/TC 351 for their

products in order to test the potential release of Regulated Dangerous Substances to soil, surface water and

groundwater. CEN/TS 16637-1 is intended to provide clear procedures to determine which test method is

appropriate for a given product. CEN/TS 16637-1 aims to provide the information, needed in a CEN Technical

Product Committee, on how to deal with the relevant test method(s) to enable the producer to declare a

performance in the CE marking as a result of the test. CEN Technical Product Committees are referred to the

informative Annex A and Annex B of CEN/TS 16637-1:2014and to CEN/TR 16098, [3], for background

information on the following aspects:

a) identification of the products addressed in the product standards which have relevance with respect to the

release of dangerous substances into soil, surface water and groundwater (products only applied in the

interior of buildings are not subject to testing for these properties);

b) 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 ground water) in respect to the release of

Regulated Dangerous Substances into soil, surface water and groundwater;
c) identification of main release mechanisms.
Impact assessment is not part of the work of CEN/TC 351.

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 in different CEN

Member States and to check the influence of testing conditions on the test result (e.g. temperature, flow rate,

renewal scheme, etc. [5). The results of the research program confirmed the robustness of the horizontal tests

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CEN/TS 16637-2:2014 (E)

known from former works. Conclusions from the program have been implemented into the Technical

Specifications for the test methods. However, the performance of the leaching test regarding repeatability and

reproducibility is dependent on the tested construction product and on the testing conditions. When these

Technical Specifications of the horizontal leaching tests are adopted by CEN, the leaching tests referred to in

these Technical Specifications will not yet be fully validated. No data will be available on repeatability and

reproducibility for the range of construction products. For other, sometimes comparable, matrices performance

data are available from national as well as EU validation studies.
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SIST-TS CEN/TS 16637-2:2014
CEN/TS 16637-2:2014 (E)
1 Scope

(1) This Technical Specification 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 Technical

Specification).

(3) 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.

(4) The test method applies to more or less regularly shaped test portions consisting of monolithic test pieces

3 3

with minimum dimensions of 40 mm in all directions (volume > 64 000 mm (64 cm )). It also applies to plate-

2 2

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 CEN/TS 16637-1:2014, 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.

(5) Metals, metallic coatings and organic coatings on metals are excluded from the scope of CEN/TS 16637-2

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) in intermittent contact

to water, physical and chemical properties might be changed in permanent contact with water. For these

products CEN/TS 16637-2 is not appropriate.

(7) Guidance on the applicability of the test method to a given product is outlined in CEN/TS 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 may be used in contact with water this usually should not be the case as construction products

should then be dimensionally stable. If a product may substantially wear 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

may (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 and

optimum test conditions may 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.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 14346, Characterization of waste - Calculation of dry matter by determination of dry residue or water

content
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SIST-TS CEN/TS 16637-2:2014
CEN/TS 16637-2:2014 (E)
EN 16192, Characterization of waste - Analysis of eluates

EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)

EN ISO 5667-3, Water quality - Sampling - Part 3: Preservation and handling of water samples (ISO 5667-3)

CEN/TS 16637-1, Construction products - Assessment of release of dangerous substances - Part 1: Guidance

for the determination of leaching tests and additional testing steps
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
eluate
solution recovered from a leaching test
3.2
laboratory sample
sample or sub-sample(s) sent to or received by the laboratory
[SOURCE: IUPAC 1990 [6], 2.5.5]

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.
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.

3.4
leaching behaviour

release and change with time in release from a solid product upon contact with a leachant as a function of

major release controlling factors
Note 1 to entry: Such factors are diffusion, pH, L/S or time.
3.5
release mechanism

physico-chemical processes that control the release of substances from a solid construction product into a

leachant

Note 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.
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3.6
liquid volume to surface area-ratio
L/A

ratio between the amount of liquid (L) which in a given step of the test is in contact with the exposed surface

area (A) of the test portion
Note 1 to entry: L/A is expressed in l/m .
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 considered intended conditions of use

Note 1 to entry: Monolithic products are usually tested by a dynamic surface leaching test.

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 considered intended

conditions of use

Note 1 to entry: Plate-like products are usually tested by a dynamic surface leaching test.

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 facility

Note 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).

3.10
release rate

product specific rate describing the mass of a substance released from a product at a given time interval in a

laboratory leaching test

Note 1 to entry: The release rate is expressed in (mg/m )/d (tank leaching test) or in (mg/kg)/d (percolation test). The

first, area related release rate is also called “flux”.
3.11
leachant renewal scheme
selection of time intervals after which the leachant is renewed
3.12
sample
portion of material selected from a larger quantity of material
[SOURCE: IUPAC 1990 [6], 2.1.1]

Note 1 to entry: The manner of selection of the sample is usually prescribed in a sampling plan (x, y, z).

Note 2 to entry: The term “sample” is often accompanied by a prefix (e.g. laboratory sample, test sample) specifying

the type of sample and/or the specific step in the sampling process to which the obtained material relates.

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3.13
sheet-like product

product formed as a flexible or semi-flexible sheet, which has certain minimum dimensions and physical and

mechanical properties that ensure its integrity over a certain period of time in the considered intended

conditions of use

Note 1 to entry: Sheet-like products are usually tested by the dynamic surface leaching test.

3.14
test piece
single monolithic, plate- or sheet-like piece as part of the test portion
3.15
test portion

amount or volume of the test sample taken for analysis, usually of known weight or volume

[SOURCE: IUPAC 1990 [6]]
Note 1 to entry: The test portion might consist of more than one test piece.
3.16
test sample

sample, prepared from the laboratory sample, from which test portions are removed for testing or for analysis

[SOURCE: IUPAC 1990 [6], 2.5.6]
3.17
exposed surface
part of the total surface of the test portion exposed to the leachant
3.18
compacted granular product

granular product with a low permeability, due to very small pores between the particles

Note 1 to entry: Compacted granular products are usually tested by the method for granular construction products with

low hydraulic conductivity, because the percolation test is not applicable due to the low permeability of the products.

3.19
monolithic granular product

granular product with specific requirements on the grain size distribution to be tested in the dynamic surface

leaching test (DSLT)
3.20

release method for granular construction products with low hydraulic conductivity

GLHC

release test method in which a construction product with low hydraulic conductivity is exposed with one

defined surface to a leachant renewed at subsequent time intervals
3.21
dynamic surface leaching test
DSLT

release test method in which a monolithic, sheet-like or plate-like product is immersed in a leachant renewed

at subs
...

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