SIST EN 12873-2:2022
(Main)Influence of materials on water intended for human consumption - Influence due to migration - Part 2: Test method for non-metallic and noncementitious site-applied materials
Influence of materials on water intended for human consumption - Influence due to migration - Part 2: Test method for non-metallic and noncementitious site-applied materials
This document specifies a procedure to determine the migration of substances from non-metallic and non-cementitious site-applied materials for use in contact with water intended for human consumption.
It is applicable to site-applied materials intended to be used under various conditions for the transport and storage of water intended for human consumption, including raw water used for the production of water intended for human consumption. It covers the extraction by water of substances from these materials after their application on site.
The document is applicable to materials whose physical or chemical properties alter during or after on-site application, such as coatings, paints, and adhesives. In addition, some site-applied materials that do not change in such a manner, e.g. greases or lubricants, are also included.
Einfluss von Materialien auf Trinkwasser - Einfluss infolge der Migration - Teil 2: Prüfverfahren für vor Ort aufgebrachte nicht metallische und nicht zementgebundene Materialien
Dieses Dokument legt ein Verfahren zur Bestimmung der Migration von Stoffen aus vor Ort aufgebrachten nicht metallischen und nicht zementgebundenen Materialien fest, die für die Verwendung in Kontakt mit dem für den menschlichen Gebrauch bestimmten Wasser vorgesehen sind.
Es gilt für vor Ort aufgebrachte Materialien, die zum Einsatz unter unterschiedlichen Bedingungen für den Transport und die Speicherung von für den menschlichen Gebrauch bestimmtem Wasser, einschließlich von Rohwasser, das für die Herstellung von für den menschlichen Gebrauch bestimmtem Wasser verwendet wird, vorgesehen sind. Es behandelt die Extraktion von Bestandteilen aus diesen Materialien durch Wasser nach ihrer Aufbringung vor Ort.
Dieses Dokument ist auf Materialien anwendbar, deren physikalische oder chemische Eigenschaften sich bei oder nach der Aufbringung vor Ort ändern, wie z. B. Beschichtungsstoffe, Anstrichstoffe und Klebstoffe. Außerdem sind auch einige vor Ort aufgebrachte Materialien enthalten, die sich nicht auf diese Art und Weise verändern, wie z. B. Schmierfette oder Schmierflüssigkeiten.
Influence des matériaux en contact sur l’eau destinée à la consommation humaine - Influence due à la migration - Partie 2 : Méthode d’essai des matériaux appliqués sur site, excepté les matériaux métalliques et ceux à base de ciment
Le présent document spécifie une méthode de détermination de la migration de substances à partir de matériaux appliqués sur site, utilisés en contact avec l’eau destinée à la consommation humaine, à l’exception des matériaux métalliques et de ceux à base de ciment.
Il s’applique à des matériaux appliqués sur site utilisés dans diverses conditions pour le transport et le stockage de l’eau destinée à la consommation humaine, y compris les eaux brutes pour la production d’eau destinée à la consommation humaine. Il traite de la migration dans l’eau de constituants issus de ces matériaux après que ceux-ci aient été appliqués sur site.
Le présent document s’applique aux matériaux dont les propriétés physiques ou chimiques se modifient pendant ou après leur application sur site, tels que les enduits, peintures et adhésifs. De plus, sont également inclus certains matériaux appliqués sur site qui ne se modifient pas, comme les graisses ou les lubrifiants.
Vpliv materiala na pitno vodo - Vpliv migracije - 2. del: Metoda preskušanja nekovinskih in necementnih materialov
Ta dokument določa postopek za ugotavljanje migracije snovi iz nekovinskih in necementnih materialov, ki so pri uporabi v stiku s pitno vodo.
Uporablja se za materiale na kraju samem, namenjene uporabi v različnih pogojih za prevoz in shranjevanje pitne vode, vključno z neobdelano vodo, ki se uporablja za pripravo pitne vode. Zajema vodno ekstrakcijo snovi iz teh materialov, uporabljenih na kraju samem.
Dokument se uporablja za materiale, katerih fizikalne ali kemične lastnosti se spremenijo med nanosom na mestu uporabe ali po njem, kot so premazi, barve in lepila. Uporablja se tudi za nekatere druge materiale na kraju samem, ki se ne spreminjajo na tak način, npr. masti ali maziva.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12873-2:2022
01-februar-2022
Nadomešča:
SIST EN 12873-2:2005
Vpliv materiala na pitno vodo - Vpliv migracije - 2. del: Metoda preskušanja
nekovinskih in necementnih materialov
Influence of materials on water intended for human consumption - Influence due to
migration - Part 2: Test method for non-metallic and noncementitious site-applied
materials
Einfluss von Materialien auf Trinkwasser - Einfluss infolge der Migration - Teil 2:
Prüfverfahren für vor Ort aufgebrachte nicht metallische und nicht zementgebundene
Materialien
Influence des matériaux en contact sur l’eau destinée à la consommation humaine -
Influence due à la migration - Partie 2 : Méthode d’essai des matériaux appliqués sur
site, excepté les matériaux métalliques et ceux à base de ciment
Ta slovenski standard je istoveten z: EN 12873-2:2021
ICS:
13.060.20 Pitna voda Drinking water
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
SIST EN 12873-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 12873-2:2022
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SIST EN 12873-2:2022
EN 12873-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 13.060.20; 67.250 Supersedes EN 12873-2:2005
English Version
Influence of materials on water intended for human
consumption - Influence due to migration - Part 2: Test
method for non-metallic and noncementitious site-applied
materials
Influence des matériaux en contact sur l'eau destinée à Einfluss von Materialien auf Trinkwasser - Einfluss
la consommation humaine - Influence due à la infolge der Migration - Teil 2: Prüfverfahren für vor Ort
migration - Partie 2 : Méthode d'essai des matériaux aufgebrachte nicht metallische und nicht
appliqués sur site, excepté les matériaux métalliques et zementgebundene Materialien
ceux à base de ciment
This European Standard was approved by CEN on 15 November 2021.
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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12873-2:2021 E
worldwide for CEN national Members.
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SIST EN 12873-2:2022
EN 12873-2:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 7
5 Reagents . 7
6 Apparatus . 8
7 Test pieces . 9
8 Pre-treatment of test pieces . 10
9 Test procedure . 11
10 Calculation of test results . 13
11 Test report . 14
Annex A (normative) Arrangement for flushing pipes with nominal size greater than DN 80 . 18
Annex B (normative) Additional procedure for testing non-homogeneous products and
pipes with nominal size greater than DN 80 . 21
Annex C (informative) Examples of extended collection and analysis of migration waters . 26
Annex D (informative) Procedural tests using standard additions (positive controls) . 28
Annex E (informative) Flow diagrams (Figures E.1 and E.2) for migration test procedure for
cold water temperature and elevated temperature . 29
Bibliography . 31
2
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SIST EN 12873-2:2022
EN 12873-2:2021 (E)
European foreword
This document (EN 12873-2:2021) has been prepared by Technical Committee CEN/TC 164 “Water
Supply”, 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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
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 will supersede EN 12873-2:2005.
Significant technical difference between this edition and EN 12873-2:2005 is as follows:
• the test temperatures, outlined in Clause 4 ‘Principle’, are more specific;
• the use of chromic acid is removed because of safety concerns;
• the use of sulphuric acid has been removed;
• the examples of extended collection and analysis of migration waters (Annex C) are more
systematic.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
3
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SIST EN 12873-2:2022
EN 12873-2:2021 (E)
Introduction
In respect of potential adverse effects on the quality of water intended for human consumption caused
by the materials, it is called to mind that, while awaiting the adoption of verifiable European acceptance
criteria, the relevant national regulations remain in force.
This document has been drawn up with the objective to describe a test method to determine the
migration of substances from products made from, or incorporating, organic and glassy
(porcelain/vitreous enamel) material for use in contact with water intended for human consumption.
Annex A, which is normative, describes an alternative arrangement for flushing pipes having a nominal
size greater than DN 80.
Annex B, which is informative, describes additional procedures for testing non-homogeneous products
and pipes having a nominal size greater than DN 80.
Annex C, which is informative, describes a schedule for the preparation of migration waters.
Annex D, which is informative, describes procedural tests using standard additions (positive controls).
Annex E, which is informative, describes the migration test procedure in a schematic manner.
This document will result in one of a series of standards on test methods which support the appropriate
standards.
With regards to potential adverse effect on the quality of water intended for human consumption,
caused by the material testing covered by this document:
1) This document provides no information as to whether the final product tested using this
methodology may be used without restriction in any of the Member States of the EU or EFTA.
2) It should be noted that, whilst awaiting the adoption of verifiable European criteria, existing
national regulations concerning the use of this material test method remain in force.
NOTE Conformity with this document does not confer or imply acceptance or approval of the material in any
of the Member States of the EU or EFTA. The use of the methodology covered by this document is subject to
regulation or control by National Authorities.
This document, Part 2, is the second in a series of standards for dealing with the influence of migration
from materials on water intended for human consumption, including:
— Part 1: Test method for factory-made products made from or incorporating organic and glassy
(porcelain/vitreous enamel) materials;
— Part 2: Test method for non-metallic and non-cementitious site-applied products;
— Part 3: Test method for ion exchange and absorbent resins;
— Part 4: Test method for water treatment membranes.
4
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SIST EN 12873-2:2022
EN 12873-2:2021 (E)
1 Scope
This document specifies a procedure to determine the migration of substances from non-metallic and
non-cementitious site-applied materials for use in contact with water intended for human consumption.
It is applicable to site-applied materials intended to be used under various conditions for the transport
and storage of water intended for human consumption, including raw water used for the production of
water intended for human consumption. It covers the extraction by water of substances from these
materials after their application on site.
The document is applicable to materials whose physical or chemical properties alter during or after on-
site application, such as coatings, paints, and adhesives. In addition, some site-applied materials that do
not change in such a manner, e.g. greases or lubricants, are also included.
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 ISO 7393-2, Water quality - Determination of free chlorine and total chlorine - Part 2: Colorimetric
method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes (ISO 7393-2)
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 https://www.electropedia.org/
3.1
test
technical operation that consists of the determination of one or more characteristics of a given product
3.2
test procedure
specified technical method for performing a test
3.3
test report
document that presents test results and other information relevant to a test
3.4
testing laboratory
laboratory that performs tests
3.5
material
manufactured items(s) for application on site and subsequent contact with water intended for human
consumption
5
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SIST EN 12873-2:2022
EN 12873-2:2021 (E)
3.6
product
applied items, in its finished form after application on site, that comes into contact with water intended
for human consumption
3.7
test piece
product to be tested
3.8
tap water
water intended for human consumption
Note 1 to entry: see 5.2.1.
3.9
test water
water used for migration testing
Note 1 to entry: see 5.2.2 and 5.2.3.
3.10
prewashing water
water used for prewashing
Note 1 to entry: see 5.2.4.
3.11
blank water
test water which has been kept at the same specified conditions as migration water but without contact
with test pieces
Note 1 to entry: for test water, see 5.2.2 and 5.2.3; for migration water, see 3.15.
3.12
migration
movement of a substance or substances from test pieces into test water
3.13
migration period
period of time in which the migration is carried out under specified conditions
Note 1 to entry: the period of time can be 24 h or 72 h, see Clause 4.
3.14
migration water
test water after exposure to a test piece under specified conditions
3.15
migration rate
mass of a measured substance or substances (in mg) migrating from one square decimetre of a test
piece into the test water in one day at a specified temperature (°C)
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EN 12873-2:2021 (E)
3.16
lining
layer(s) of material(s) applied on site intended as the finished product to come into contact with water
intended for human consumption, e.g. the inside surfaces of pipes, fittings or storage vessels
Note 1 to entry: Excluded are layers, such as coatings, not intended for contact with drinking water, e.g. as
applied to the outside surfaces of pipes and fittings for corrosion protection.
3.17
cure
conversion of a material into its final form
Note 1 to entry: For example by chemical reaction or drying.
4 Principle
Each test piece is taken on site or prepared under specific conditions that are intended to simulate site-
application taking into account the manufacturer’s written instructions.
Each test piece is subjected to a specified pre-treatment procedure of stagnation and prewashing. The
surface of the test piece that is exposed in practice to water intended for human consumption is brought
into contact with test water during at least three sequential migration periods. A migration period is
either;
— 72 h at (23 ± 2) °C for products intended to come into contact with cold water.
— 24 h at a specified temperature at (60 ± 2) °C (warm water test) and/or (85 ± 2) °C (hot water test)
for products intended to come into contact with warm or hot water.
Migration rates for the first three migration periods are determined by analysis of the required
substances in the corresponding migration waters. Referring product standards and/or national
regulatory authorities may specify the number of sequential migration periods to be carried out.
NOTE 1 The test is carried out under conditions to ensure that calculation of a reliable migration rate is
facilitated. These conditions are not meant to simulate any ‘real use conditions’. Relating the results obtained from
this document to the ‘real use conditions’ is carried out using a conversion procedure. This procedure will be
specified in product standards or national regulations.
NOTE 2 The choice of the type of test water (chlorinated and/or chlorine-free), the temperature of the test
water, the number of additional migration periods will be specified in product standards or national regulations.
NOTE 3 If testing at warm or hot temperature is required, national regulations can require additional cold
water testing.
5 Reagents
5.1 General
For the purpose of this document, the listed reagents in Clause 5 will apply.
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EN 12873-2:2021 (E)
5.2 Waters to be used for testing
5.2.1 Tap water, water that is intended for human consumption with a free chlorine content less than
0,2 mg/l as Cl .
2
5.2.2 Test water, chlorine-free water with a conductivity of < 2 mS/m and a total organic content
(TOC) of < 0,2 mg/l C, e.g. prepared by reverse osmosis, deionization or distillation, followed by
activated carbon filtration.
5.2.3 Chlorinated test water, test water according to 5.2.2 having an active chlorine content of
(1 ± 0,2) mg/l as Cl (5.4).
2
5.2.4 Prewashing water, tap water (5.2.1).
5.3 Cleaning liquids for glassware
5.3.1 Hydrochloric acid, concentrated (30 % mass per volume) analytical reagent grade.
5.3.2 Hydrochloric acid solution, prepared by slowly adding (0,5 ± 0,01) l of concentrated
hydrochloric acid (5.3.1) to (0,5 ± 0,01) l of test water (5.2.2).
WARNING Care is needed because preparing the solution can generate heat.
5.3.3 Nitric acid, concentrated (65 % mass per volume) analytical reagent grade.
5.3.4 Nitric acid solution, prepared by slowly adding (0,5 ± 0,01) l of concentrated nitric acid (5.3.3)
to (0,5 ± 0,01) l of test water (5.2.2).
WARNING Care is needed because preparing the solution can generate heat.
5.4 Other reagents
5.4.1 Sodium hypochlorite solution, prepared from a technical or general purpose reagent grade of
sodium hypochlorite (NaOCl), using test water (5.2.2) and having a known concentration of about 0,1 %
mass of free chlorine determined in accordance with EN ISO 7393-2.
Unless tests have proven otherwise, the sodium hypochlorite solution should be considered unstable
and prepared on the day of use.
6 Apparatus
6.1 Vessels, containers, stoppers and connections, shall consist of a material, such as glass, PTFE,
steel and stainless steel, which is inert under the specified test conditions (Clause 9).
The material Polytetrafluoroethylene (PTFE) should only be used when there is a small contact area
with the test water. Thus PTFE is unsuitable for containers.
6.2 Plates, stainless steel, mild steel, (sand blasted) glass or concrete/cement mortar plates, for
testing the material. The plates shall be covered completely with the test material.
6.3 Equipment, capable of maintaining the appropriate migration temperature, e.g. (23 ± 2) °C,
(60 ± 2) °C, or (85 ± 2) °C.
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6.4 Laboratory glassware, steel, stainless steel plates and sand blasted glass plates shall be cleaned
by washing with a biodegradable laboratory detergent, followed by exposing to either hydrochloric acid
solution (5.3.2) (except for stainless steel)or nitric acid solution (5.3.4) for 2 to 3 days and finally by
thoroughly rinsing with test water (5.2.2). Drain the plates and dry them in a hot air cabinet.
7 Test pieces
7.1 General requirements
The manufacturer shall provide a copy of the detailed instructions for application that accompany the
material(s).
The application instructions shall cover aspects such as:
a) surface preparation;
b) mix ratios and method of mixing;
c) method of application;
d) minimum curing temperature and time;
e) product film thickness;
f) associated materials, e.g. primers and undercoats.
The manufacturer shall provide all necessary information on material and chemical safety.
Test pieces shall be prepared in the test laboratory by the test laboratory in accordance with the
manufacturer’s written instructions. If specialized equipment for application is required then the test
pieces may be prepared by the manufacturer/contractor under the supervision of the test laboratory
under conditions that simulate site application. Where it is found necessary to deviate from these
instructions, this shall only be done with the prior agreement of the test laboratory and manufacturer
or contractor.
If test pieces cannot be prepared at the test laboratory then they shall be prepared under the
supervision of the test laboratory. The transportation conditions shall ensure that the curing conditions
are observed (e.g. time and temperature).
The test laboratory shall prepare a detailed record of test piece preparation and curing conditions.
Care shall be taken to ensure that test pieces are not contaminated during transport.
7.2 Requirements for the preparation of test piece
7.2.1 Site-applied organic lining systems for pipes
7.2.1.1 Prepare test pieces in accordance with the requirements in 7.1.
It is recommended to line pipes of the smallest diameter for which the product is intended to be used on
in order to meet the requirements in 7.3.
7.2.1.2 Cut test pieces of suitable length from the lined pipe.
Test pieces do not need to be cut if the lined pipe is already of suitable length.
7.2.1.3 Pipes with DN > 80 see testing in accordance with Annex B to meet the requirements in 7.3.
7.2.1.4 Pre-treat the test pieces according to Clause 8.
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7.2.2 Jointing compounds (solvent cements, adhesives)
7.2.2.1 Join eleven lengths of pipe with ten double sockets using the cement/adhesive in
accordance with both the pipe/fittings and the cement/adhesive manufacturer’s instructions or
relevant product/system standards to give a test piece of 1 m. Where this cannot be done, use as many
joints as possible in 1 m.
7.2.2.2 Cure the test pieces in accordance with the manufacturer’s instructions.
7.2.2.3 Pre-treat the test piece according to Clause 8.
It is recommended that this test should be undertaken using the smallest diameter pipe and double-
sockets for which the product is intended to be used on in order to meet the requirements in 7.3.
The pipe and double sockets to be used may be specified by either the manufacturer or in relevant
product/system standards.
NOTE Additional information can also be found in regulations.
7.2.3 Other site-applied materials (e.g. linings for tanks, greases and sealants)
7.2.3.1 Prepare test pieces by coating plates (6.2) and in accordance with the requirements in 7.1.
7.2.3.2 Pre-treat the coated plates in accordance with Clause 8.
7.3 Surface-area-to-volume ratio (S/V)
The ratio of the surface area (S) of the test piece intended to come into contact with test water to the
−1
2 3 2
volume (V) of the test water shall be expressed per decimetre, i.e. dm (which is dm /dm or dm /l).
−1 −1
Use a surface area-to-volume ratio in the range of 5 dm to 40 dm .
NOTE S/V ratios can be specified by national regulations.
If the test piece has an irregular or textured surface then, for calculations, the surface is considered to
be smooth. If the shape of the test piece is such that accurate calculation of the surface is impracticable
then use an estimated surface area of the test piece. In this case the length and width shall be recorded
together with a sufficiently detailed description of the product(s) to enable further test pieces to be
prepared that will be within ± 10 % of the surface area of the original test piece.
The supplier of the test samples shall be instructed to ensure that they represent the product as it is
used in contact with water intended for human consumption.
8 Pre-treatment of test pieces
8.1 General
Test pieces are pre-treated prior to migration testing by procedures involving flushing, stagnation and
prewashing.
Start the pre-treatment immediately after the curing period specified by the manufacturer.
NOTE The curing period can also be specified in regulations.
The migration periods shall be consecutive and without a break.
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8.2 Test pieces to be tested at (23 ± 2) °C (Cold water test)
8.2.1 Flushing
If possible, flush test pieces with flowing tap water (5.2.1) for (60 ± 5) min flowing from the test piece
with a speed of 1 m/min to 3 m/min.
In order to avoid the use of large quantities of water the arrangement described in Annex A shall be
used to flush large diameter products.
Test pieces which cannot be flushed shall be placed in an appropriate vessel, e.g. a bucket, having a flow
of water from the bottom upwards such that the calculated speed with regard to the upper open surface
of the vessel is 1 m/min to 3 m/min for (60 ± 5) min.
8.2.2 Stagnation with test water
The stagnation procedure involves the following steps:
— Test pieces shall be immersed in, filled with, or exposed to, test water (5.2.2 and/or 5.2.3) for a
period of (24 ± 1) h at (23 ± 2) °C.
— Remove the water.
— Prewash the test pieces according to 8.4.
8.3 Test pieces to be tested at elevated temperature (60 °C and/or 85 °C)
8.3.1 Flushing
Flush test pieces according to 8.2.1.
8.3.2 Stagnation with test water at elevated temperature
The stagnation procedure at elevated temperature involves the following steps:
— test pieces shall be immersed in, filled with, or exposed to, test water (5.2.2 and/or 5.2.3) for a
period of (24 ± 1) h at (60 ± 2) °C (warm water test) or (85 ± 2) °C (hot water test);
— Remove the water;
— Prewash the test pieces according to 8.4.
8.4 Prewashing
The prewashing procedure involves the following steps:
— flush test pieces according to 8.2.1;
— rinse the test pieces with test water (5.2.2 and/or 5.2.3) for 2 min.
9 Test procedure
9.1 Migration of substances
9.1.1 General
The migration procedure (9.1.2) shall be performed at (23 ± 2) °C. Products intended to come in contact
with drinking water at elevated temperatures shall be tested at elevated temperatures (9.1.3) and at
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(23 ± 2) °C (cold water test). Depending on the intended use of the product and specified in the product
standard the test at elevated temperatures shall either be carried out at (60 ± 2) °C (warm water test)
or at (85 ± 2) °C (hot water test).
NOTE 1 The number of tests to be carried out, e.g. single tests or duplicate tests for each water type, will be
specified in product standards or national regulations.
NOTE 2 The choice of the type of test water (chlorinated and/or chlorine-free) will be specified by product
standards or national regulations.
NOTE 3 Thin layer chromatography tanks (volume 3,5 to 4 l) with lids made from glass can be used as
containers to carry out the tests.
9.1.2 Cold water test procedure
9.1.2.1 Carry out the following procedure using test water without chlorine (5.2.2) and/or test
water with chlorine (5.2.3).
9.1.2.2 Fill or immerse the test pieces using the appropriate test water and allow to stand for
(72 ± 1) h at (23 ± 2) °C. In both cases, ensure that the test pieces or vessels/containers are completely
immersed or filled and free of headspace in order to retain volatile substances. At the end of this period,
T
collect the migration waters for analysis. For each analyte the concentration a (Clause 10) shall be
n
determined.
9.1.2.3 Repeat 9.1.2.2 two more times using fresh test waters, ensuring that the test pieces are put
in contact with the same type of test water (e.g. without chlorine) for all the three periods.
9.1.2.4 It may be necessary to increase the number of migration periods. The sequence for an
extended number of migration periods shall be in accordance to Table C.1.
9.1.3 Elevated temperature test procedure
9.1.3.1 Carry out the following procedure using test water without chlorine at the test temperature
detailed in 9.1.1.
9.1.3.2 Fill or immerse the test pieces using the test water (5.2.2) and allow to stand for (24 ± 1) h
at the test temperature. The test water shall reach the test temperature within 1 h after the products
are filled or immersed. At the end of this period, collect the migration water for analysis. For each
T
analyte the concentration a (Clause 10) shall be determined.
n
9.1.3.3 Repeat 9.1.3.2 two more times using fresh test water without chlorine (5.2.2).
9.1.3.4 It may be necessary to increase the number of migration periods. The sequence for an
extended number of migration periods shall be in accordance to Table C.2.
9.2 Procedural blank tests
9.2.1 For each migration period carry out a blank test procedure, using the same test conditions (test
water, test temperature, migration periods, stoppers, etc.) as described in 9.1, but omitting the test
piece.
9.2.2 Where only glass or stai
...
SLOVENSKI STANDARD
oSIST prEN 12873-2:2020
01-september-2020
Vpliv materiala na pitno vodo - Vpliv migracije - 2. del: Metoda preskušanja
nekovinskih in necementnih materialov
Influence of materials on water intended for human consumption - Influence due to
migration - Part 2: Test method for non-metallic and noncementitious site-applied
materials
Einfluss von Materialien auf Trinkwasser - Einfluss infolge der Migration - Teil 2:
Prüfverfahren für vor Ort aufgebrachte nicht metallische und nicht zementgebundene
Materialien
Influence des matériaux en contact sur l’eau destinée à la consommation humaine -
Influence due à la migration - Partie 2 : Méthode d’essai des matériaux appliqués sur
site, excepté les matériaux métalliques et ceux à base de ciment
Ta slovenski standard je istoveten z: prEN 12873-2
ICS:
13.060.20 Pitna voda Drinking water
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
oSIST prEN 12873-2:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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DRAFT
EUROPEAN STANDARD
prEN 12873-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 13.060.20; 67.250 Will supersede EN 12873-2:2005
English Version
Influence of materials on water intended for human
consumption - Influence due to migration - Part 2: Test
method for non-metallic and noncementitious site-applied
materials
Influence des matériaux en contact sur l'eau destinée à Einfluss von Materialien auf Trinkwasser - Einfluss
la consommation humaine - Influence due à la infolge der Migration - Teil 2: Prüfverfahren für vor Ort
migration - Partie 2 : Méthode d'essai des matériaux aufgebrachte nicht metallische und nicht
appliqués sur site, excepté les matériaux métalliques et zementgebundene Materialien
ceux à base de ciment
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 164.
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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12873-2:2020 E
worldwide for CEN national Members.
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prEN 12873-2:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 7
5 Reagents . 7
5.1 Waters to be used for testing . 7
5.2 Cleaning liquids for glassware . 8
5.3 Other reagents . 8
6 Apparatus . 8
7 Test pieces . 9
7.1 General requirements . 9
7.2 Requirements for the preparation of test piece . 9
7.3 Surface-area-to-volume ratio (S/V) . 10
8 Pre-treatment of test pieces . 10
8.1 General . 10
8.2 Test pieces to be tested at (23 ± 2) °C(Cold water test). 11
8.3 Test pieces to be tested at elevated temperature (60 °C and/or 85 °C) . 11
8.4 Prewashing . 11
9 Test procedure . 11
9.1 Migration of substances . 11
9.2 Procedural blank tests . 12
9.3 Analysis . 13
10 Calculation of test results . 13
10.1 Calculation of the concentration of the substances in the migration water . 13
10.2 Calculation of the migration rate of the measured substances . 13
11 Test report . 14
11.1 Content of the test report . 14
11.2 General information . 14
11.3 Information on the material. 15
11.4 Information on the test pieces . 15
11.5 Information on the test procedure . 16
11.6 Test results . 16
Annex A (normative) Arrangement for flushing pipes with nominal size greater than DN 80 . 18
Annex B (informative) Additional procedure for testing non-homogeneous products and
pipes with nominal size greater than DN 80 . 21
Annex C (informative) Examples of extended collection and analysis of migration waters . 26
Annex D (informative) Procedural tests using standard additions (positive controls) . 28
Annex E (informative) Flow diagrams for migration test procedure for cold water
temperature and elevated temperature . 29
2
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European foreword
This document (prEN 12873-2:2020) has been prepared by Technical Committee CEN/TC 164 “Water
Supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
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 supersedes EN 12873-2:2005.
Significant technical difference between this edition and EN 12873-2:2005 is as follows:
• the test temperatures, outlined in Clause 4 'Principle', are more specific;
• the use of chromic acid is removed because of safety concerns;
• the examples of extended collection and analysis of migration waters (Annex C) are more
systematic.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
3
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Introduction
In respect of potential adverse effects on the quality of water intended for human consumption caused
by the materials, it is called to mind that, while awaiting the adoption of verifiable European acceptance
criteria, the relevant national regulations remain in force.
This document has been drawn up with the objective to describe a test method to determine the
migration of substances from products made from, or incorporating, organic and glassy
(porcelain/vitreous enamel) material for use in contact with water intended for human consumption.
Annex A, which is normative, describes an alternative arrangement for flushing pipes having a nominal
size greater than DN 80.
Annex B, which is informative, describes additional procedures for testing non-homogeneous products
and pipes having a nominal size greater than DN 80.
Annex C, which is informative, describes a schedule for the preparation of migration waters.
Annex D, which is informative, describes procedural tests using standard additions (positive controls).
Annex E, which is informative, describes the migration test procedure in a schematic manner.
This document will result in one of a series of standards on test methods which support the appropriate
standards.
This document, Part 2, is the second in a series of standards for dealing with the influence of migration
from materials on water intended for human consumption, including:
— Part 1: Test method for factory-made products made from or incorporating organic and glassy
(porcelain/vitreous enamel) materials;
— Part 2: Test method for non-metallic and non-cementitious site-applied products;
— Part 3: Test method for ion exchange and absorbent resins;
— Part 4: Test method for membrane water treatment systems.
4
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1 Scope
This document specifies a procedure to determine the migration of substances from non-metallic and
non-cementitious site-applied materials for use in contact with water intended for human consumption.
It is applicable to site-applied materials intended to be used under various conditions for the transport
and storage of water intended for human consumption, including raw water used for the production of
water intended for human consumption. It covers the extraction by water of substances from these
materials after their application on site.
The document is applicable to materials whose physical or chemical properties alter during or after on-
site application, such as coatings, paints, and adhesives. In addition, some site-applied materials that do
not change in such a manner, e.g. greases or lubricants, are also included.
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 ISO 7393-2, Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric
method using N, N-dialkyl-1,4-phenylenediamine, for routine control purposes (ISO 7393-2)
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 https://www.electropedia.org/
3.1
test
technical operation that consists of the determination of one or more characteristics of a given product
3.2
test procedure
specified technical method for performing a test
3.3
test report
document that presents test results and other information relevant to a test
3.4
testing laboratory
laboratory that performs tests
3.5
material
manufactured items(s) for application on-site and subsequent contact with water intended for human
consumption
5
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3.6
product
applied items, in its finished form after application on site, that comes into contact with water intended
for human consumption
3.7
test piece
product to be tested
3.8
tap water
water intended for human consumption
Note 1 to entry: see 5.2.1.
3.9
test water
water used for migration testing
Note 1 to entry: see 5.2.2 and 5.2.3.
3.11
prewashing water
water used for prewashing
Note 1 to entry: see 5.2.4.
3.12
blank water
test water, which has been kept at the same specified conditions as migration water but without contact
with test pieces
Note 1 to entry: for test water, see 5.2.2 and 5.2.3; for migration water, see 3.15.
3.13
migration
movement of a substance or substances from test pieces into test water
3.14
migration period
period of time in which the migration is carried out under specified conditions
Note 1 to entry: the period of time can be 24 h or 72 h, see Clause 4.
3.15
migration water
test water after exposure to a test piece under specified conditions
3.16
migration rate
mass of a measured substance or substances (in mg) migrating from one square decimetre of a test
piece into the test water in one day at a specified temperature (°C)
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3.17
lining
layer(s) of material(s) applied on site intended as the finished product to come into contact with water
intended for human consumption, e.g. the inside surfaces of pipes, fittings or storage vessels
Note 1 to entry: Excluded are layers, such as coatings, not intended for contact with drinking water, e.g. as
applied to the outside surfaces of pipes and fittings for corrosion protection.
3.19
cure
conversion of a material into its final form; for example by chemical reaction or drying
4 Principle
Each test piece is taken on site or prepared under specific conditions that are intended to simulate site-
application taking into account the manufacturer's written instructions.
Each test piece is subjected to a specified pre-treatment procedure of stagnation and prewashing. The
surface of the test piece that is exposed in practice to water intended for human consumption is brought
into contact with test water during at least three sequential migration periods. A migration period is
either;
— 72 h at (23 ± 2) °C for products intended to come into contact with cold water.
— 24 h at a specified temperature at (60 ± 2) °C (warm water test) and/or (85 ± 2) °C (hot water test)
for products intended to come into contact with warm or hot water.
Migration rates for the first three migration periods are determined by analysis of the required
substances in the corresponding migration waters. Referring product standards and/or national
regulatory authorities may specify the number of sequential migration periods to be carried out.
NOTE 1 The test is carried out under conditions to ensure that calculation of a reliable migration rate is
facilitated. These conditions are not meant to simulate any ‘real use conditions’. Relating the results obtained from
this document to the ‘real use conditions’ is carried out using a conversion procedure. This procedure will be
specified in product standards or national regulations.
NOTE 2 The choice of the type of test water (chlorinated and/or chlorine-free), the temperature of the test
water, the number of additional migration periods will be specified in product standards or national regulations.
NOTE 3 If testing at warm or hot temperature is required, national regulations can require additional cold
water testing.
5 Reagents
5.1 General
For the purpose of this document, the listed reagents in Clause 5 will apply.
5.2 Waters to be used for testing
5.2.1 Tap water, water that is intended for human consumption with a free chlorine content less than
0,2 mg/l as Cl .
2
5.2.2 Test water, chlorine-free water with a conductivity of < 2 mS/m and a total organic content
(TOC) of < 0,2 mg/l C, e.g. prepared by reverse osmosis, deionization or distillation, followed by
activated carbon filtration.
7
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5.2.3 Chlorinated test water, test water according to 5.2.2 having an active chlorine content of
(1 ± 0,2) mg/l as Cl (5.4).
2
5.2.4 Prewashing water, tap water (5.2.1).
5.3 Cleaning liquids for glassware
5.3.1 Hydrochloric acid, concentrated (30 % mass per volume) analytical reagent grade.
5.3.2 Hydrochloric acid solution, prepared by slowly adding (0,5 ± 0,01) l of concentrated
hydrochloric acid (5.3.1) to (0,5 ± 0,01) l of test water (5.2.2).
NOTE Care is needed because preparing the solution can generate heat.
5.3.3 Nitric acid, concentrated (65 % mass per volume) analytical reagent grade.
5.3.4 Nitric acid solution, prepared by slowly adding (0,5 ± 0,01) l of concentrated nitric acid (5.3.3)
to (0,5 ± 0,01) l of test water (5.2.2).
NOTE Care is needed because preparing the solution can generate heat.
5.4 Other reagents
5.4.1 Sodium hypochlorite solution, prepared from a technical or general purpose reagent grade of
sodium hypochlorite (NaOCl), using test water (5.2.2) and having a known concentration of about 0,1 %
mass of free chlorine determined in accordance with EN ISO 7393-2.
Unless tests have proved otherwise the sodium hypochlorite solution should be considered unstable
and prepared on the day of use.
6 Apparatus
6.1 Vessels, containers, stoppers and connections, shall consist of a material, such as glass, PTFE,
steel and stainless steel, which is inert under the specified test conditions (Clause 9).
The material PTFE should only be used when there is a small contact area with the test water. Thus
PTFE is unsuitable for containers
6.2 Plates, stainless steel, mild steel, (sand blasted) glass or concrete/cement mortar plates, for
testing the material. The plates shall be covered completely with the test material.
6.3 Equipment, capable of maintaining the appropriate migration temperature, e.g. (23 ± 2) °C,
(60 ± 2) °C, or (85 ± 2) °C.
6.4 Laboratory glassware, steel, stainless steel plates and sand blasted glass plates shall be cleaned
by washing with a biodegradable laboratory detergent, followed by exposing to either hydrochloric acid
solution (5.3.2) (except for stainless steel)or nitric acid solution (5.3.4)for 2 to 3 days and finally by
thoroughly rinsing with test water (5.2.2). Drain the plates and dry them in a hot air cabinet.
8
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7 Test pieces
7.1 General requirements
The manufacturer shall provide a copy of the detailed instructions for application that accompany the
materials(s).
The application instructions shall cover aspects such as:
a) surface preparation;
b) mix ratios and method of mixing;
c) method of application;
d) minimum curing temperature and time;
e) product film thickness;
f) associated materials, e.g. primers and undercoats.
The manufacturer shall provide all necessary information on material and chemical safety.
Test pieces shall be prepared in the test laboratory by the test laboratory in accordance with the
manufacturer's written instructions. If specialized equipment for application is required then the test
pieces may be prepared by the manufacturer/contractor under the supervision of the test laboratory
under conditions that simulate site application. Where it is found necessary to deviate from these
instructions, this shall only be done with the prior agreement of the test laboratory and manufacturer
or contractor.
If test pieces cannot be prepared at the test laboratory then they shall be prepared under the
supervision of the test laboratory. The transportation conditions shall ensure that the curing conditions
are observed (e.g. time and temperature).
The test laboratory shall prepare a detailed record of test piece preparation and curing conditions.
Care shall be taken to ensure that test pieces are not contaminated during transport.
7.2 Requirements for the preparation of test piece
7.2.1 Site-applied organic lining systems for pipes
7.2.1.1 Prepare test pieces in accordance with the requirements in 7.1.
It is recommended to line pipes of the smallest diameter for which the product is intended to be used on
in order to meet the requirements in 7.3.
7.2.1.2 Cut test pieces of suitable length from the lined pipe.
Test pieces do not need to be cut if the lined pipe is already of suitable length
7.2.1.3 Pipes with DN > 80 shall be tested in accordance with Annex B to meet the requirements in
7.3.
7.2.1.4 Pre-treat the test pieces according to Clause 8
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7.2.2 Jointing compounds (solvent cements, adhesives)
7.2.2.1 Join eleven lengths of pipe with ten double sockets using the cement/adhesive in
accordance with both the pipe/fittings and the cement/adhesive manufacturer's instructions or
relevant product/system standards to give a test piece of 1 m. Where this cannot be done, use as many
joints as possible in 1 m.
NOTE: for procedural blanks see 9.2
7.2.2.2 Cure the test pieces in accordance with the manufacturer's instructions.
7.2.2.3 Pre-treat the test piece according to Clause 8.
It is recommended that this test should be undertaken using the smallest diameter pipe and double-
sockets for which the product is intended to be used on in order to meet the requirements in 7.3.
The pipe and double sockets to be used may be specified by either the manufacturer or in relevant
product/system standards or regulations.
7.2.3 Other site-applied materials (e.g. linings for tanks, greases and sealants)
7.2.3.1 Prepare test pieces by coating plates (6.2) and in accordance with the requirements in 7.1.
7.2.3.2 Pre-treat the coated plates in accordance with Clause 8.
7.3 Surface-area-to-volume ratio (S/V)
The ratio of the surface area (S) of the test piece intended to come into contact with test water to the
volume
−1 2 3 2
(V) of the test water shall be expressed per decimetre, i.e. dm (which is dm /dm or dm /l). Use a
−1 −1
surface area-to-volume ratio in the range of 5 dm to 40 dm .
S/V ratios may be specified by national regulations.
If the test piece has an irregular or textured surface then, for calculations, the surface is considered to
be smooth. If the shape of the test piece is such that accurate calculation of the surface is impracticable
then use an estimated surface area of the test piece. In this case the length and width shall be recorded
together with a sufficiently detailed description of the product(s) to enable further test pieces to be
prepared that will be within ± 10 % of the surface area of the original test piece.
The supplier of the test samples shall be instructed to ensure that they represent the product as it is
used in contact with water intended for human consumption.
8 Pre-treatment of test pieces
8.1 General
Test pieces are pre-treated prior to migration testing by procedures involving flushing, stagnation and
prewashing.
Start the pre-treatment immediately after the curing period specified by either regulations or the
manufacturer, whichever is shorter.
The migration periods shall be consecutive and without a break.
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8.2 Test pieces to be tested at (23 ± 2) °C(Cold water test)
8.2.1 Flushing
If possible, flush test pieces with flowing tap water (5.2.1) for (60 ± 5) min flowing from the test piece
with a speed of 1 m/min to 3 m/min.
In order to avoid the use of large quantities of water the arrangement described in Annex A may be
used to flush large diameter products.
Test pieces which cannot be flushed shall be placed in an appropriate vessel, e.g. a bucket, having a flow
of water from the bottom upwards such that the calculated speed with regard to the upper open surface
of the vessel is 1 m/min to 3 m/min for (60 ± 5) min.
8.2.2 Stagnation with test water
The stagnation procedure involves the following steps:
— Test pieces shall be immersed in, filled with, or exposed to, test water (5.2.2 and/or 5.2.3) for a
period of (24 ± 1) h at (23 ± 2) °C.
— Remove the water.
— Prewash the test pieces according to 8.4.
8.3 Test pieces to be tested at elevated temperature (60 °C and/or 85 °C)
8.3.1 Flushing
Flush test pieces according to 8.2.1
8.3.2 Stagnation with test water at elevated temperature
The stagnation procedure at elevated temperature involves the following steps:
— test pieces shall be immersed in, filled with, or exposed to, test water (5.2.2 and/or 5.2.3) for a
period of (24 ± 1) h at (60 ± 2) °C (warm water test) or (85 ± 2) °C (hot water test);.
— Remove the water.
— Prewash the test pieces according to 8.4.
8.4 Prewashing
The prewashing procedure involves the following steps:
— flush test pieces according to 8.2.1;
— rinse the test pieces with test water (5.2.2 and/or 5.2.3) for 2 min.
9 Test procedure
9.1 Migration of substances
9.1.1 General
The migration procedure (9.1.2) shall be performed at (23 ± 2) °C. Products intended to come in contact
with drinking water at elevated temperatures shall be tested at elevated temperatures (9.1.3) and at
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(23 ± 2) °C (cold water test). Depending on the intended use of the product and specified in the product
standard the test at elevated temperatures shall either be carried out at (60 ± 2) °C (warm water test)
or at (85 ± 2) °C (hot water test).
NOTE 1 The number of tests to be carried out, e.g. single tests or duplicate tests for each water type, will be
specified in product standards or national regulations.
NOTE 2 The choice of the type of test water (chlorinated and/or chlorine-free) will be specified by product
standards or national regulations.
NOTE 3 Thin layer chromatography tanks (volume 3,5 to 4 l) with lids made from glass can be used as
containers to carry out the tests
...
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