prEN 14944-3 rev

SLOVENSKI STANDARD
01-november-2021
Vpliv cementnih proizvodov na pitno vodo - Preskusne metode - 3. del: Prehod
snovi iz industrijsko izdelanih cementnih proizvodov
Influence of cementitious products on water intended for human consumption - Test
methods - Part 3: Migration of substances from factory-made cementititous products
Einfluss von zementgebundenen Produkten auf Wasser für den menschlichen Gebrauch
- Prüfverfahren - Teil 3: Migration von Substanzen aus fabrikmäßig hergestellten
zementgebundenen Produkten
Influence des produits à base de ciment sur l'eau destinée à la consommation humaine -
Méthodes d'essais - Partie 3 : Migration de substances à partir des produits fabriqués en
usine
Ta slovenski standard je istoveten z: prEN 14944-3
ICS:
13.060.20 Pitna voda Drinking water
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 14944-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2021
ICS 13.060.20; 67.250 Will supersede EN 14944-3:2007
English Version
Influence of cementitious products on water intended for
human consumption - Test methods - Part 3: Migration of
substances from factory-made cementititous products
Influence des produits à base de ciment sur l'eau Einfluss von zementgebundenen Produkten auf Wasser
destinée à la consommation humaine - Méthodes für den menschlichen Gebrauch - Prüfverfahren - Teil
d'essais - Partie 3 : Migration de substances à partir 3: Migration von Substanzen aus fabrikmäßig
des produits fabriqués en usine hergestellten zementgebundenen Produkten
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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14944-3:2021 E
worldwide for CEN national Members.

prEN 14944-3:2021 (E)
Contents Page
European foreword . 7
Introduction . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Principle . 12
5 Reagents . 13
5.1 Sodium hypochlorite solution . 13
5.2 Waters to be used for testing . 13
5.3 Cleaning liquids for apparatus . 13
6 Apparatus . 13
6.1 General. 13
6.2 Apparatus and materials for test piece preparation (see Annexes A, B and C) . 14
6.2.1 Stainless steel plates and cylinders . 14
6.2.2 Glass cylinders . 14
6.2.3 Moulds for forming test pieces . 14
6.3 Apparatus and materials for preconditioning and migration procedure . 15
7 Samples and test pieces . 15
7.1 Sampling, transport and storage of samples. 15
7.2 Preparation of test pieces . 15
7.2.1 General. 15
7.2.2 Factory made pipes, fittings and storage systems . 15
7.3 Surface area to volume ratio (S/V) for use in the test procedure . 16
7.3.1 General. 16
7.3.2 Pipes and fittings . 16
7.3.3 Storage systems (cement mortar, cement mortar lined or concrete) . 16
8 Pre-treatment of samples (curing and preconditioning) . 16
8.1 General. 16
8.2 Curing . 16
8.3 Preconditioning . 17
9 Test procedure . 17
9.1 General. 17
9.2 Preparation of migration water for analysis of substances . 17
9.2.1 Genreral. 17
9.2.2 Migration procedure . 17
9.2.3 Second and third migration periods . 17
9.2.4 Additional migration periods . 18
9.3 Control samples (blank test) . 18
10 Analysis . 18
11 Calculation of test results. 18
11.1 Calculation of the concentration of the substances in the migration water . 18
prEN 14944-3:2021 (E)
11.2 Calculation of the migration rate of the measured substances . 19
11.3 Calculation of the mean migration rate . 19
12 Test report . 19
12.1 General . 19
12.2 General information . 19
12.3 Information on the product . 20
12.4 Information on the test procedure . 20
12.5 Test results. 20
Annex A (normative) Additional procedures for testing factory-made pipes (cement mortar
lined and concrete) . 22
A.1 Sampling, test piece preparation and storage . 22
A.1.1 Sampling . 22
A.1.2 Test piece preparation and storage . 22
A.1.2.1 General . 22
A.1.2.2 Pipes sampled as finished products. 23
A.1.2.3 Pipes sampled as fresh mortar . 23
A.1.2.3.1 General . 23
A.1.2.3.2 Test pieces (fresh mortar) . 23
A.1.2.3.2.1 Coated plates . 23
A.1.2.3.2.2 Prisms . 23
A.1.2.3.2.3 Test arrangements (fresh mortar) . 24
A.1.2.4 Pipes sampled as fresh concrete . 24
A.1.2.4.1 General . 24
A.1.2.4.2 Test pieces (fresh concrete) . 25
A.1.2.4.3 Test arrangements - Cubes/cylinders . 25
A.1.2.4.3.1 Testing one face only . 25
A.1.2.4.3.2 Testing fully immersed . 25
A.2 Surface area to volume (S/V) ratio . 26
A.3 Preconditioning of test pieces . 26
A.4 Test procedure . 26
A.4.1 Migration procedure at 23 °C . 26
A.4.2 Migration procedure at elevated temperature . 26
A.5 Expression of results . 26
A.6 Reporting . 26
Annex B (normative) Additional procedures for testing factory made fittings (cement
mortar lined and concrete) . 27
B.1 Sampling, test piece preparation and storage . 27
B.1.1 Sampling of factory made fittings . 27
B.1.2 Test piece preparation and storage . 27
prEN 14944-3:2021 (E)
B.1.2.1 General. 27
B.1.2.2 Production of equivalent-pipes . 28
B.1.2.2.1 Cement mortar lined . 28
B.1.2.2.2 Concrete . 28
B.1.2.2.3 Equivalent pipes sampled as finished products . 28
B.1.2.3 Fittings sampled as fresh mortar . 28
B.1.2.3.1 General . 28
B.1.2.3.2 Test pieces (fresh mortar) . 28
B.1.2.3.2.1 Coated plates . 28
B.1.2.3.2.2 Prisms . 29
B.1.2.3.2.3 Test arrangements (fresh mortar) . 29
B.1.2.4 Fittings sampled as fresh concrete . 30
B.1.2.4.1 General . 30
B.1.2.5 Test pieces (fresh concrete) . 30
B.1.2.5.1 Test arrangements (cubes/cylinders) . 31
B.1.2.5.1.1 Testing one face only . 31
B.1.2.5.1.2 Testing fully immersed . 31
B.2 Surface area to volume (S/V) ratio . 31
B.3 Preconditioning of test pieces . 31
B.4 Test procedure . 31
B.4.1 Migration procedure at 23 °C . 31
B.4.2 Migration procedure at elevated temperature . 31
B.5 Expression of results . 31
B.6 Reporting . 31
Annex C (normative) Additional procedures for testing factory-made storage systems
(cement mortar, cement mortar lined and concrete) . 32
C.1 Sampling, test piece preparation and storage . 32
C.1.1 Sampling . 32
C.1.2 Test piece preparation and storage . 32
C.1.2.1 General. 32
C.1.2.2 Storage systems sampled as finished products . 33
C.1.2.3 Storage systems sampled as fresh mortar . 33
C.1.2.3.1 General . 33
C.1.2.3.2 Test pieces (fresh mortar) . 33
C.1.2.3.2.1 Coated plates . 33
C.1.2.3.2.2 Prisms . 33
C.1.2.3.3 Test arrangements (fresh mortar) . 34
prEN 14944-3:2021 (E)
C.1.2.4 Storage systems sampled as fresh concrete . 34
C.1.2.4.1 General . 34
C.1.2.4.2 Test pieces (fresh concrete) . 35
C.1.2.4.3 Test arrangements (fresh concrete) . 36
C.2 Surface area to volume (S/V) ratio . 36
C.3 Preconditioning of test pieces . 36
C.4 Test procedure . 36
C.4.1 Migration procedure at 23 C . 36
C.4.2 Migration procedure at elevated temperature . 36
C.5 Expression of results . 36
C.6 Reporting . 36
Annex D (informative) Examples of typical test pieces and test conditions as a function of
S/V ratio . 37
D.1 General . 37
D.2 Pipes and fittings . 37
D.3 Test pieces to which a cylinder of stainless steel or glass is to be attached . 38
D.4 Square test plates coated with mortar . 39
D.5 Moulded test pieces where all faces are exposed to test water . 39
Annex E (informative) Test arrangements for testing factory-made cement based products . 41
Annex F (normative) Additional procedures for testing factory-made cement based
products at elevated temperature. 48
F.1 General . 48
F.2 Test procedure at elevated temperature . 48
F.2.1 General . 48
F.2.2 Preparation of migration water for analysis of substances . 48
F.3 Control samples (blank test) . 48
F.4 Expression of results . 49
F.5 Reporting . 49
Annex G (informative) Discrimination between porous and non-porous coatings on
factory-made products . 50
G.1 Principle . 50
G.2 Apparatus . 50
G.3 Materials and reagents . 50
G.4 Test procedure . 50
G.4.1 General . 50
G.4.2 Laboratory blank . 50
G.4.3 Coated product . 51
prEN 14944-3:2021 (E)
G.5 Determination of pH . 51
G.6 Expression of results . 52
G.7 Classification criteria . 52
Annex H (informative) Schematic description of the test procedure . 53
H.1 Preconditioning . 53
H.2 Production of migration water at 23 °C . 53
H.3 Typical Schedule . 55
H.3.1 Preconditioning . 55
H.3.2 Production of migration waters . 55
Annex I (informative) Procedural tests using standard additions (positive controls) . 56
Bibliography . 57

prEN 14944-3:2021 (E)
European foreword
This document (prEN 14944-3:2021) 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.
This document will supersede EN 14944-3:2007.
In comparison with EN 14944-3:2007, the following technical changes have been made:
— provisions for testing the influence of materials on the migration of organic substances (TOC) have
been shifted to prEN 14944-1;
— requirements for disinfection (preconditioning with 50 mg/l chlorine) have been removed;
— a procedure for extending the number of migration periods has been included.
prEN 14944-3:2021 (E)
Introduction
This document describes a test method to determine the migration of inorganic substances in water
intended for human consumption.
This document will result in one of a series of standards that support standards for the approval of
products and materials in contact with water intended for human consuption.
This document is part of a series dealing with the influence of cement based and associated non-cement
based products/materials on water intended for human consumption, including:
— Part 1: Influence of factory-made cement based products on organoleptic parameters and migration
of organic substances (TOC)
— Part 2: Influence of site-applied cement based materials and associated non-cement based
products/materials on organoleptic parameters and migration of organic substances (TOC)
— Part 3: Migration of substances from factory-made cement based products
— Part 4: Migration of substances from site-applied cement based materials and associated non-
cement based products/materials
prEN 14944-3:2021 (E)
1 Scope
This document specifies a method to determine the migration of substances from factory-made cement
based products into test waters after contact with the products.
This document is applicable to factory-made cement based, e.g. cement mortar linings to metallic pipes,
tanks, concrete pipes, etc., intended to be used for the transport and storage of water intended for
human consumption, including raw water used for the production of drinking water.
NOTE Tests with the specified test water will not necessarily be representative of materials used in different
kinds of waters and especially very soft waters.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 196-1, Methods of testing cement - Part 1: Determination of strength
EN 1015-2, Methods of test for mortar for masonry - Part 2: Bulk sampling of mortars and preparation of
test mortars
EN 1015-11, Methods of test for mortar for masonry - Part 11: Determination of flexural and compressive
strength of hardened mortar
EN 10088-1, Stainless steels - Part 1: List of stainless steels
EN 12350-1, Testing fresh concrete - Part 1: Sampling and common apparatus
EN 12390-1, Testing hardened concrete - Part 1: Shape, dimensions and other requirements for specimens
and moulds
EN 12390-2, Testing hardened concrete - Part 2: Making and curing specimens for strength tests
EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)
EN ISO 7393-1, Water quality - Determination of free chlorine and total chlorine - Part 1: Titrimetric
method using N, N-diethyl-1,4-phenylenediamine (ISO 7393-1)
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)
EN ISO 10523, Water quality - Determination of pH (ISO 10523)
prEN 14944-3:2021 (E)
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:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
appropriate body
certification body, inspection body or testing laboratory, as relevant to a particular requirement
3.2
cement based product
factory-made product containing a cement based material supplied in the hardened state with a formed
surface prior to its incorporation into the construction works
3.3
cement based material
material that contains a hydraulic cement in sufficient proportion to act as the main binder by forming a
hydrate structure which governs the performance of the material
3.4
associated non-cement based product
product which is applied to the surface of a cement based product, directly or indirectly, during
manufacture (or construction) and which either provides a porous seal to the product or which remains
as a residue in contact with water, e.g. porous seal coats, formwork release agents and curing
compounds
3.5
porous seal coat
polymeric (usually organic) materials applied in a thin (25 μm – 200 μm thickness) surface layer to a
cement mortar lining in order to restrict (but not prevent) interactions between the mortar and
conveyed water
NOTE 1 to entry: See ISO 16132:2004, 3.6 [1].
3.6
proxy sample
sample of fresh mortar or fresh concrete taken from material to be used for the production of a factory-
made product, either applied to one face of a stainless steel plate (6.2.1.1) using the same process of
application used in the factory (mortar only) or cast into a mould (mortar or concrete) of appropriate
dimensions (e.g. standard cube, cylinder or prism etc.) and compacted (where appropriate), cured and
hardened under conditions representative of those intended for the product
3.7
fresh concrete
concrete that is fully mixed and still in a condition capable of being compacted by the chosen method
3.8
fresh mortar
cement mortar that is fully mixed and still in a condition of being applied by the chosen method
prEN 14944-3:2021 (E)
3.9
test
technical operation that consists of the determination of one or more characteristics of a given product
3.10
test procedure
specified technical method for performing a test
3.11
sample
one or more units, or a specified quantity, drawn from a batch or lot, selected at random for inspection,
e.g. at the factory or in a laboratory
3.12
test piece
sample or portion which is to be conditioned, treated or otherwise prepared to be tested to obtain a
single test result
3.13
nominal diameter
DN/ID
DN/OD
numerical designation of the size of a component, which is a whole number approximately equal to the
actual dimensions in millimetres
NOTE 1 to entry: This applies to either the internal diameter (DN/ID) or the external diameter (DN/OD).
3.14
preconditioning
succession of contact periods of a test piece with the preconditioning water (3.15) before contact with
the test water
3.15
preconditioning water
water used for preconditioning, prepared as described in 5.2.1
3.16
test water
water used for testing purposes, prepared as described in 5.2.2 and used in accordance with 5.2.3 and
5.2.4
3.17
migration water
test water which has been in contact with a test piece under specified conditions
3.18
blank water
test water which has been kept at the same specified conditions as migration water but without contact
with the test piece
prEN 14944-3:2021 (E)
3.19
tap water
drinking water distributed by a public supplier
NOTE 1 to entry: Tap water is used as a lubricant/coolant for the sawing and coring operations used to obtain test
pieces generally from products of large dimensions. See Annexes A, B and C.
3.20
demineralized water
water conforming to specific requirements for Grade 3
Note 1 to entry: Grade 3 defined in EN ISO 3696:1995
4 Principle
Each test piece is subjected to a specified preconditioning procedure where the surface which, in
practice will be exposed to water intended for human consumption, is brought into contact with
preconditioning water during five sequential periods: three periods of 24 h, 1 period of 72 h and a final
period of 24 h.
The preconditioned test piece is then brought into contact with test water, chlorinated and/or chlorine-
free during three sequential migration periods. A migration period is either:
a) 72 h at (23 ± 2) °C for products intended to come into contact with chlorinated or chlorine-free cold
water;
b) 24 h at a specified elevated temperature for products intended to come into contact with warm or
hot chlorine-free water.
Migration rates are calculated after each contact period by determination of the content of specified
substances in the corresponding migration water.
NOTE 1 The test is carried out under conditions that ensure that reliable migration rates are calculated. These
conditions are not meant to simulate any service condition. Relating the results obtained from this European
Standard to the service condition is carried out using a conversion procedure. This procedure will be specified in
regulations.
NOTE 2 The selection of:
a) the appropriate test water, chlorinated and/or chlorine-free, from those made available in this
document,
b) the temperature of the test water is specified in product or system standards or in national or
European regulations, as appropriate.
prEN 14944-3:2021 (E)
5 Reagents
5.1 Sodium hypochlorite solution
5.1.1 Sodium hypochlorite solution, prepared from a commercial solution of sodium hypochlorite
(NaOCl) and have a known concentration of about 0,1 % by mass of free chlorine determined in
accordance with either EN ISO 7393-1 or EN ISO 7393-2.
This sodium hypochlorite solution is unstable and shall be prepared on the day of use.
5.2 Waters to be used for testing
5.2.1 Preconditioning water prepared by dissolving (222 ± 2) mg anhydrous calcium chloride
(CaCl ) and (336 ± 2) mg sodium hydrogen-carbonate (NaHCO ) in one litre of demineralized water
2 3
(3.20). The pH is determined in accordance with ISO 10523 and adjusted to 7,4 ± 0,1 by bubbling air
and/or CO into the solution.
-
NOTE The target total hardness is 200 mg/l as CaCO3 and the target alkalinity is 244 mg/l as HCO3 .
5.2.2 Test water, prepared by dissolving (110 ± 1) mg anhydrous calcium chloride (CaCl ), (140 ± 1)
mg sodium hydrogen carbonate (NaHCO ) and (48 ± 1) mg sodium silicate (Na SiO ·9·H O) in one litre
3 2 3 2
of demineralized water (3.20).
The pH is determined in accordance with EN ISO 10523 and adjusted to 7,0 ± 0,1 by bubbling air and/or
CO into the solution.
-
NOTE The target total hardness is 100 mg/l as CaCO3, the target alkalinity is 122 mg/l as HCO3 and the silica
.
concentration is 10 mg/l as SiO2
5.2.3 Test water without chlorine content (chlorine-free), shall consist of a batch of test water
(5.2.2) used for contact with test pieces and preparation of the blank water (3.18).
5.2.4 Test water with chlorine content (chlorinated), shall consist of test water (5.2.2) with a free
chlorine content of (1,0 ± 0,2) mg/l as Cl , determined in accordance with either EN ISO 7393-1 or EN
ISO 7393-2, after addition of sodium hypochlorite solution (5.1).
5.3 Cleaning liquids for apparatus
Use one of the following cleaning liquids:
— non-perfumed biodegradable detergent;
— hydrochloric acid, 2 mol/l;
— nitric acid, 10 % or 1,5 mol/l.
6 Apparatus
6.1 General
For cleaning the glassware, and appropriate apparatus, before use, the following general requirements
apply:
a) Clean the glassware to be used, using detergent (5.3). Rinse the glassware in demineralized water
(3.20).
prEN 14944-3:2021 (E)
b) Clean the inner surface of the glassware with hydrochloric acid (5.3) and rinse it with
demineralized water. For stainless steel, clean with nitric acid (5.3) and then rinse with
demineralized water.
c) Before use, rinse the glassware, and appropriate apparatus, at least three times using
preconditioning water before preconditioning (8.3) or test water before the test procedure
(Clause 9).
6.2 Apparatus and materials for test piece preparation (see Annexes A, B and C)
6.2.1 Stainless steel plates and cylinders
6.2.1.1 Stainless steel
Stainless steel shall be austenitic, super austenitic or duplex grades in accordance with the
corresponding numerical designations, 1.4301, 1.4436, 1.4429, 1.4259 or 1.4462 in EN 10088-1 for
stainless steels.
NOTE The grades above are specified for the use of stainless steel as reinforcement in concrete. Therefore
they are considered to be inert when used in contact with cement based proxy samples (see Annexes A, B and
C).
6.2.1.2 Plates
In order to provide a sufficient volume of migration water for assessment, the surface area of one face of
2 2
a plate should be between 10,000 mm and 90,000 mm . The length/width of the plates should be
selected to be consistent with the dimensions of the test container and the volume of test water in
which they will be immersed.
6.2.1.3 Cylinders
The diameter and length of a cylinder should be consistent with the dimensions of the test piece (see
Annexes A, B, C, D and E) and the volume of test water appropriate to the specified S/V ratio given in
7.3.
6.2.2 Glass cylinders
The diameter and length of a glass cylinder should be consistent with the dimensions of the test piece
(see Annexes A, B, C, D and E) and the volume of test water appropriate to the specified S/V ratio given
in 7.3. Glass cylinders should be provided with suitable external (opaque) shielding for use during
migration procedures (test pieces and blanks), in order to minimize exposure of migration waters to
ambient light.
6.2.3 Moulds for forming test pieces
Moulds for forming prisms of mortar shall conform to the requirements of EN 196-1, as specified for
use in EN 1015-11, or to EN 12390-1 for forming cubes/cylinders of concrete, with modifications to
materials and dimensional tolerances as specified in Annex A, B or C, as appropriate.
Clean moulds and any filling frame used with a mould, by thoroughly washing with non-perfumed
detergent (5.3) and tap water (3.19), rinsing with copious amounts of tap water, followed by a final
rinse with demineralized water (3.20) and dry before use.
If a factory-made cement based product has been formed in a process where its entire contact surface
has been in contact with a release agent anf if proxy samples (3.5) are used, the same release agent shall
be applied to the internal surfaces of the mould, otherwise the use of release agents is not permitted.
...