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BS EN 16637-1:2023

BS EN 16637-1:2023

$198.66

Construction products: Assessment of release of dangerous substances – Guidance for the determination of leaching tests and additional testing steps

Published By Publication Date Number of Pages
BSI 2023 58
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(1) This document allows the identification of the appropriate leaching test method for the determination of the release of RDS from construction products into soil, surface water and groundwater. This document provides a stepwise procedure for the determination of appropriate release tests, including: a) determination of the test method based on general product properties; b) choice of the test method using specific product properties. (2) Furthermore, this document gives general guidance for CEN Technical Product Committees and EOTA WGs on basic aspects (sampling, sample preparation and storage, eluate treatment, analysis of eluates and documentation) to be specified in the relevant product standards or ETAs. (3) Metallic products and coatings on metallic products are not considered in the determination scheme of this document since the test methods in prEN 16637 2:ā€”1) (tank test) and prEN 16637 3:ā€”2) (column test) are not appropriate for the testing of these construction products due to a different release mechanism (solubility control). NOTE See Annex F. (4) It is assumed that intermittent contact with water (e.g. exposure to rainwater) is tested ā€“ by convention ā€“ as permanent contact. For some coatings, (e.g. some renders with organic binders according to EN 15824 [7]) in intermittent contact to water, physical and chemical properties might be altered in permanent contact with water. These products are not considered in the determination scheme of this document since the test method in prEN 16637 2 is not appropriate for the testing of these construction products (in this case EN 16105 [8] might be an alternative method).

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
9 3.1 Sampling and products
12 3.2 Release laboratory testing
17 4 Symbols and abbreviations
4.1 Symbols
4.2 Abbreviations
5 Determination of the appropriate release test method
5.1 Principles and general review of the test methods
18 5.2 Product properties and test conditions for the determination of the relevant test method
20 5.3 Determination of the appropriate test method
21 6 Adoption of modules for the product specific leaching standard
6.1 Overview of the modules
23 6.2 Product sampling and transport to the laboratory
6.2.1 Introduction on sampling
6.2.2 Objective of sampling
6.2.3 Preparation of a sampling plan and sampling strategy
6.2.3.1 General
25 6.2.3.2 Sampling approach
6.2.3.3 Population and sub-population
6.2.3.4 Scale
6.2.3.5 Size of samples, of increments if relevant and sampling techniques
26 6.2.3.6 Sampling of complex, composite and large products
6.2.3.7 Sampling location and time
6.2.4 Information from the testing laboratory needed to complement the product sampling plan
27 6.2.5 Packaging and transport of laboratory sample
6.2.6 Sample description and marking of laboratory sample and sampling report
6.2.7 Chain of custody report
28 6.2.8 Dispatch of product samples, time schedule
6.2.9 Report on sampling
6.3 Preparation of the test portion
6.4 Collection of eluates
6.4.1 Dynamic surface leaching test
29 6.4.2 Up-flow percolation test
30 7 Indirect methods
7.1 Definition
7.2 Requirements for indirect methods
7.3 Examples of indirect methods
31 Annex A (informative)Release scenarios and impact assessment
A.1 Release scenarios and test determination
A.1.1 General
A.1.2 Scenario I: Impermeable product or product with low permeability
A.1.3 Scenario II: Permeable product
32 A.2 Impact assessment and impact evaluation
A.2.1 Source-pathway-target approach for impact assessment
33 A.2.2 How to use ā€œintended useā€ and ā€œintended conditions of useā€
34 A.2.3 Impact evaluation
A.3 Responsibilities
35 Annex B (informative)Different types of leaching tests
B.1 General
B.2 Reference tests and (in)direct test
36 B.3 Leaching tests for products exposed to carbonation and oxidation
37 Annex C (informative)Key concepts for product sampling
C.1 Introduction
C.2 Representativeness
38 C.3 Uncertainty
39 C.4 Sampling under various stages of factory production control
40 C.5 Objective of sampling
C.6 Preparation of a sampling plan
42 C.7 Considerations on sampling strategy
C.7.1 General
C.7.2 Sampling approach
43 C.7.3 Population and sub-population
C.7.4 Scale
47 C.7.5 Size of increments and samples
C.7.6 Sampling of complex, composite and large products
48 C.7.7 Sampling location and moment
49 Annex D (informative)Example form of a chain of custody report
50 Annex E (informative)Example form for the sampling report
51 Annex F (informative)Metallic products
52 Annex G (informative)Guidance on how to identify and handle unexpected test results and how to recognize heterogeneous products
G.1 Analytical bias
53 G.2 Examples of products with less straightforward test selection
G.3 Identification of specimen heterogeneity

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BS EN 16637-1:2023
$198.66