Influence of materials on water intended for human consumption - Influence due to migration - Part 2: Test method for non-metallic and non-cementitious site-applied materials

This European Standard 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 constituents from these materials after their application on site.
The standard 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. Sie 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 sur l'eau des matériaux destinés à entrer en contact avec l'eau destinée à la consommation humaine - Influence de la migration - Partie 2 : Méthode d'essai des matériaux appliqués sur site excepté les matériaux métalliques et ceux à base de ciment

La présente Norme européenne 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.
La présente norme 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. Elle traite de la migration dans l�eau de constituants issus de ces matériaux
après que ceux-ci aient été appliqués sur le site.
La présente Norme 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 de la sorte comme, par exemple, les graisses ou les lubrifiants.

Vpliv materiala na pitno vodo - Vpliv migracije – 2. del: Metoda preskušanja nekovinskih in necementnih materialov

General Information

Status
Withdrawn
Publication Date
08-Feb-2005
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
15-Dec-2021

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SLOVENSKI STANDARD
SIST EN 12873-2:2005
01-maj-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 non-cementitious 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 sur l'eau des matériaux destinés a entrer en contact avec l'eau destinée a la

consommation humaine - Influence de la migration - Partie 2 : Méthode d'essai des

matériaux appliqués sur site excepté les matériaux métalliques et ceux a base de ciment

Ta slovenski standard je istoveten z: EN 12873-2:2005
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 12873-2:2005 en

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

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SIST EN 12873-2:2005
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SIST EN 12873-2:2005
EUROPEAN STANDARD
EN 12873-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2005
ICS 13.060.20; 67.250
English version
Influence of materials on water intended for human consumption
- Influence due to migration - Part 2: Test method for non-
metallic and non-cementitious site-applied materials

Influence sur l'eau des matériaux destinés à entrer en Einfluss von Materialien auf Trinkwasser - Einfluss infolge

contact avec l'eau destinée à la consommation humaine - der Migration - Teil 2: Prüfverfahren für vor Ort

Influence de la migration - Partie 2 : Méthode d'essai des aufgebrachte nicht metallische und nicht zementgebundene

matériaux appliqués sur site excepté les matériaux Materialien
métalliques et ceux à base de ciment
This European Standard was approved by CEN on 3 January 2005.

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 Central Secretariat 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 Central Secretariat has the same status as the official

versions.

CEN members are the national standards bodies of 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12873-2:2005: E

worldwide for CEN national Members.
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
Contents
Page

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

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

1 Scope.............................................................................................................................................. 6

2 Normative references ................................................................................................................... 6

3 Terms and definitions................................................................................................................... 6

4 Principle ......................................................................................................................................... 8

5 Reagents ........................................................................................................................................ 8

5.1 General ........................................................................................................................................ 8

5.2 Waters to be used for testing....................................................................................................... 8

5.3 Cleaning liquids for glassware ..................................................................................................... 8

5.4 Other reagents ............................................................................................................................. 9

6 Apparatus....................................................................................................................................... 9

7 Test pieces..................................................................................................................................... 9

7.1 General requirements .................................................................................................................. 9

7.2 Requirements for the preparation of test piece.......................................................................... 10

7.2.1 Site-applied organic lining systems for pipes........................................................................... 10

7.2.2 Jointing compounds (solvent cements, adhesives) ................................................................. 10

7.2.3 Other site-applied materials (e.g. greases and sealants) ........................................................ 11

7.3 Surface-area-to-volume ratio (S/V)............................................................................................ 11

8 Pretreatment of test pieces........................................................................................................ 11

8.1 General ...................................................................................................................................... 11

8.2 Test pieces to be tested at (23 ± 2) °C ...................................................................................... 11

8.2.1 Flushing.................................................................................................................................... 11

8.2.2 Stagnation with test water........................................................................................................ 12

8.2.3 Stagnation with disinfection treatment water ........................................................................... 12

8.3 Test pieces to be tested at elevated temperature (60 °C to 85 °C)........................................... 12

8.3.1 Flushing.................................................................................................................................... 12

8.3.2 Stagnation with disinfection treatment water at (23 ± 2) °C..................................................... 12

8.3.3 Stagnation with test water at elevated temperature................................................................. 12

8.4 Prewashing ................................................................................................................................ 12

9 Test procedure ............................................................................................................................ 12

9.1 Migration of substances ............................................................................................................. 12

9.2 Procedural blank tests ............................................................................................................... 13

9.3 Analysis...................................................................................................................................... 13

10 Calculation of test results .......................................................................................................... 14

10.1 Calculation of the concentration of the substances in the migration water ............................... 14

10.2 Calculation of the migration rate of the measured substances.................................................. 14

10.3 Calculation of the mean migration rate ...................................................................................... 14

11 Test report.................................................................................................................................... 15

11.1 General information ................................................................................................................... 15

11.2 Information on the material ........................................................................................................ 15

11.3 Information on the test pieces.................................................................................................... 15

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SIST EN 12873-2:2005
EN 12873-2:2005 (E)

11.4 Information on the test procedure...............................................................................................16

11.5 Test results .................................................................................................................................16

Annex A (informative) 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........................................................................................................20

B.1 Arrangement for testing ..............................................................................................................20

B.2 Flushing of the test piece............................................................................................................20

B.3 Blank test ....................................................................................................................................20

Annex C (informative) Sequence of additional migration periods in the migration test ............22

C.1 Introduction .................................................................................................................................22

C.2 Migration tests ............................................................................................................................22

Annex D (informative) Procedural tests using standard additions (positive controls) ..............24

Annex E (informative) Flow diagrams for migration test procedure for cold water temperature and

elevated temperature ..........................................................................................................................25

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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
Foreword

This document (EN 12873-2:2005) 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 August 2005, and conflicting national standards shall be withdrawn at

the latest by August 2005.

It has been drawn up with the objective to describe a test method to determine the migration of substances

from non-metallic and non-cementitious materials for use in contact with water intended for human

consumption.

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 non-metallic and non-cementitious factory made products;

― Part 2: Test method for non-metallic and non-cementitious site-applied materials;

― Part 3: Test method for ion exchange and absorbent resins;
― Part 4: Test method for water treatment membranes.
This document includes a Bibliography.

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.
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SIST EN 12873-2:2005
EN 12873-2:2005 (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.
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SIST EN 12873-2:2005
EN 12873-2:2005 (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 referenced documents are indispensable for the application 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-diethyl-1,4-phenylenediamine, for routine control purposes. (ISO 7393-2:1985)

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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
3.6
product

material, in its finished form after application on site, that comes into contact with water intended for human

consumption
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
3.7
test piece

product to be tested for suitability for use in contact with water intended for human consumption

3.8
tap water
water intended for human consumption (5.2.1)
3.9
test water
water used for migration testing (5.2.2 and 5.2.3)
3.10
disinfection treatment water
water used for preliminary chlorination (5.2.4)
3.11
prewashing water
water used for prewashing (5.2.5)
3.12
blank water

test water, (5.2.2 and 5.2.3) which has been kept at the same specified conditions as migration water (3.15)

but without contact with test pieces
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
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)
3.17
fitting, ancillary

complete functional unit made up of one or more components or materials, parts of which are in contact with

water intended for human consumption, e.g. taps, valves, water meters, water filters, pipe connectors and

flexible hose assemblies
3.18
lining

layer of material applied on site and intended, as a finished product, to come into contact with drinking water,

e.g. the inside surfaces of pipes, fittings or storage vessels
3.19
cure

conversion of a material into its final form; for example by chemical reaction or drying

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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
4 Principle

Test pieces are 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 pretreatment 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 °C for products intended to come into contact with cold water.

― 24 h at a specified temperature in the range 60 °C to 85 °C 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.

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 service condition. Relating the results obtained from this document to the

service condition is carried out using a conversion procedure. This procedure will be specified in 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 and the necessity for a preliminary chlorination (see Clause 8) will be specified by

product/system standards or regulations.
5 Reagents
5.1 General
For the purpose of this document, the following reagents apply.
5.2 Waters to be used for testing

5.2.1 tap water, water intended for human consumption with a free chlorine content less than 0,2 mg/l as

Cl .

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 Cl2 (5.3).

5.2.4 disinfection treatment water, test water according to 5.2.2 having an active chlorine content of

(50 ± 5) mg/l as Cl2 (5.4).
5.2.5 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).
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
NOTE Care is needed because the solution may 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 the solution may generate heat.
5.3.5 sulphuric acid, concentrated (density 1,84 g/ml) analytical reagent grade.

5.3.6 chromic acid, analytical reagent grade prepared by dissolving (50 ± 1) g of chromium (VI) oxide in

(1 ± 0,02) l of sulphuric acid (5.3.5).

NOTE Chromic acid is a storage hazard; it may burst a sealed container due to carbon dioxide release. It is a

powerful oxidant and may give potentially explosive reactions with oxidizable materials. It may ignite on contact with

acetone or alcohols. When heated to decomposition it emits acrid smoke and irritating fumes.

5.4 Other reagents

sodium hypochlorite, 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 fraction of free

chlorine determined in accordance with EN ISO 7393-2.

NOTE 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, consisting of a material, such as glass, PTFE or

stainless steel, which is inert under the specified test conditions (Clause 9).

NOTE 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 must be covered completely with the test material.

6.3 Equipment, capable of maintaining the appropriate migration temperature, e.g. (23 ± 2) °C, or (60 ± 2) °C,

to (85 ± 2) °C.

6.4 Cleaning, of laboratory glassware, stainless steel plates and sand blasted glass plates shall be cleaned

by washing with a biodegradable laboratory detergent, followed by rinsing with either hydrochloric acid

solution (5.3.2) (except for stainless steel), nitric acid solution (5.3.4) or chromic acid (5.3.6) 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

materials(s).
The application instructions shall cover aspects such as:
a) surface preparation;
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
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 on site by the manufacturer/contractor under the supervision of the test

laboratory in accordance with the manufacturer's written instructions. If no specialised equipment for

application is required then the test pieces may be prepared by 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 transportation of test pieces to the test laboratory is necessary, then this period of time shall be part of the

curing conditions (e.g. time and temperature).
The test pieces shall be delivered within the curing period.

The test laboratory shall prepare a detailed record of test piece preparation and curing conditions.

Care shall be taken to ensure that materials and 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.

NOTE It is recommended to line pipes of the smallest diameter and maximum recommended length in order to meet

the requirements in 7.3.
7.2.1.2 Cut test pieces of identical length from the lined pipe.
7.2.1.3 Pretreat the test pieces according to Clause 8.

7.2.1.4 Pipes with DN > 80 shall be tested in accordance with Annex B to meet the requirements in 7.3.

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 Pretreat the test piece according to Clause 8.

NOTE 1 It is recommended that this test should be undertaken using the smallest diameter pipe and double-sockets in

order to meet the requirements in 7.3.

NOTE 2 The pipe and double sockets to be used may be specified by either the manufacturer or in relevant

product/system standards or regulations.
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
7.2.3 Other site-applied materials (e.g. greases and sealants)

7.2.3.1 Prepare test pieces by coating plates (6.2) and in accordance with the requirements mentioned in 7.1.

7.2.3.2 Pretreat the coated plates in accordance with Clause 8.
7.3 Surface-area-to-volume ratio (S/V)

7.3.1 Express the ratio of the surface area, S, of the test piece intended to come into contact with volume,

V, of test water, per decimetre i.e. dm-1 (which is dm2/dm3 or dm2/l). A surface-area-to-volume ratio in the

range 5 dm-1 to 40 dm-1 shall be used.

7.3.2 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 within ± 10 % of the surface area of the original test piece.

NOTE The supplier of the test pieces should be instructed to ensure that they represent the product as it is used in

contact with water intended for human consumption.
8 Pretreatment of test pieces
8.1 General

8.1.1 Test pieces are pretreated prior to migration testing by procedures involving flushing, stagnation and

prewashing.

8.1.2 If required a disinfection treatment (stagnation) at (23 ± 2) °C is carried out.

NOTE The disinfection treatment is optional. The requirement to carry out this stage will be specified in the relevant

product/system standard or by regulations.

8.1.3 Start the pretreatment immediately after the curing period specified by either regulations or the

manufacturer, whichever is shorter.

8.1.4 If it is not possible, because of laboratory time constraints, to carry out the pretreatment and test

procedure without a break, the break shall be during the pretreatment procedure. The migration periods shall

be consecutive and without a break.
8.2 Test pieces to be tested at (23 ± 2) °°C
8.2.1 Flushing

8.2.1.1 If possible, flush test pieces with flowing tap water (5.2.1) for (60 ± 5) min with a flushing speed of

1 m/min to 3 m/min.

NOTE 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.

8.2.1.2 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.
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SIST EN 12873-2:2005
EN 12873-2:2005 (E)
8.2.2 Stagnation with test water

8.2.2.1 Test pieces shall be immersed in, or filled with, test water (5.2.2 and/or 5.2.3) for a period of (24 ± 1)

h at (23 ± 2) °C.
8.2.2.2 Remove the water.
8.2.2.3 Prewash the test pieces according to 8.4.
8.2.3 Stagnation with disinfection treatment water

8.2.3.1 Test pieces shall be immersed in, or filled with, disinfection treatment water (5.2.4) for a period of (24

± 1) h at (23 ± 2) °C.
8.2.3.2 Remove the water.
8.2.3.3 Prewash the test pieces according to 8.4.
8.3 Test pieces to be tested at elevated temperature (60 °°C to 85 °°C)
°° °°
8.3.1 Flushing
Flush test pieces according to 8.2.1
8.3.2 Stagnation with disinfection treatment water at (23 ± 2) °°C

If stagnation with disinfection treatment water prior to stagnation with test water (8.3.3) is required then

stagnation shall be carried out according to 8.2.3.
8.3.3 Stagnation with test water at elevated temperature

8.3.3.1 Test pieces shall be immersed in, or filled with, test water (5.2.2 and/or 5.2.3) for a period of

(24 ± 1) h at the elevated temperature.
8.3.3.2 Remove the water.
8.3.3.3 Prewash the test pieces according to 8.4.
8.4 Prewashing
8.4.1 Flush test pieces according to 8.2.1
8.4.2 Rinse the test pieces with test water (5.2.2 and/or 5.2.3) for 2 min.

NOTE 1 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.

NOTE 2 The choice of the type of test water (chlorinated and/or chlorine-free) will be specified by product/system

standards or regulations.
9 Test procedure
9.1 Migration of substances
9.1.1 Carry out the test for test water type (5.2.2 and/or 5.2.3).
----
...

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