Influence of cementitious products on water intended for human consumption - Test methods - Part 1: Influence of factory made cementitious products on organoleptic parameters

This European Standard specifies a method to determine the influence of factory made cementitious products on the odour, flavour, colour and turbidity of test waters after contact with the products.
This European Standard is applicable to factory made cementitious products, e.g. cement mortar linings to metallic pipes, tanks, concrete pipes etc. intended to be used for the transport and storage of water for human consumption, including raw water used for the production of drinking water.

Einfluss von zementgebundenen Produkten auf Wasser für den menschlichen Gebrauch - Prüfverfahren - Teil 1: Einfluss fabrikmäßig hergestellter zementgebundener Produkte auf organoleptische Parameter

Dieses Dokument legt ein Verfahren zur Bestimmung des Einflusses fabrikmäßig hergestellter zement-gebundener Produkte auf Geruch, Geschmack, Färbung, Trübung und den gesamten organischen Kohlenstoff (TOC) von Prüfwässern nach einem Kontakt mit den Produkten fest.
Dieses Dokument wird auf fabrikmäßig hergestellte zementgebundene Produkte angewendet, z. B. Zement-mörtelauskleidungen von metallischen Rohren, Behälter, Betonrohre usw., die dazu bestimmt sind, Trink-wasser zu transportieren und aufzubewahren, einschließlich Rohwasser, das für die Herstellung von Trink-wasser eingesetzt wird.
ANMERKUNG Prüfungen mit dem festgelegten Prüfwasser sind nicht unbedingt repräsentativ für Materialien, die in anderen Wasserarten und insbesondere in sehr weichem Wasser verwendet werden.

Influence des produits à base de ciment sur l'eau destinée à la consommation humaine - Méthode d'essai - Partie 1: Influence des produits à base de ciment fabriqués en usine sur les paramètres organoleptiques

Le présent document spécifie une méthode permettant de déterminer l’influence des produits à base de ciment fabriqués en usine sur l’odeur, la flaveur, la couleur, la turbidité et la teneur en carbone organique total (COT) des eaux d’essai après contact avec les produits concernés.
Le présent document s’applique aux produits à base de ciment fabriqués en usine, tels que les revêtements intérieurs de mortier de ciment appliqués sur des tubes métalliques, des réservoirs, des tubes en béton, etc., destinés à être utilisés pour le transport et le stockage de l’eau destinée à la consommation humaine, y compris l’eau brute utilisée pour la production de l’eau potable.
NOTE Les essais menés avec l’eau d’essai spécifiée ne seront pas nécessairement représentatifs d’une utilisation des matériaux dans une autre sorte d’eau et notamment dans les eaux très douces

Vpliv cementnih proizvodov na pitno vodo - Preskusne metode - 1. del: Vpliv industrijsko izdelanih cementnih proizvodov na organoleptične parametre

General Information

Status
Not Published
Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
25-Nov-2021
Completion Date
25-Nov-2021

RELATIONS

Buy Standard

Draft
prEN 14944-1:2021 - BARVE na PDF-str 44
English language
61 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 14944-1:2021
01-november-2021
Vpliv cementnih proizvodov na pitno vodo - Preskusne metode - 1. del: Vpliv
industrijsko izdelanih cementnih proizvodov na organoleptične parametre

Influence of cementitious products on water intended for human consumption - Test

methods - Part 1: Influence of factory made cementitious products on organoleptic

parameters
Einfluss von zementgebundenen Produkten auf Wasser für den menschlichen Gebrauch

- Prüfverfahren - Teil 1: Einfluss fabrikmäßig hergestellter zementgebundener Produkte

auf organoleptische Parameter

Influence des produits à base de ciment sur l'eau destinée à la consommation humaine -

Méthode d'essai - Partie 1: Influence des produits à base de ciment fabriqués en usine

sur les paramètres organoleptiques
Ta slovenski standard je istoveten z: prEN 14944-1
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 14944-1:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 14944-1:2021
---------------------- Page: 2 ----------------------
oSIST prEN 14944-1:2021
DRAFT
EUROPEAN STANDARD
prEN 14944-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2021
ICS 13.060.20; 67.250 Will supersede EN 14944-1:2006
English Version
Influence of cementitious products on water intended for
human consumption - Test methods - Part 1: Influence of
factory made cementitious products on organoleptic
parameters

Influence des produits à base de ciment sur l'eau Einfluss von zementgebundenen Produkten auf Wasser

destinée à la consommation humaine - Méthode d'essai für den menschlichen Gebrauch - Prüfverfahren - Teil

- Partie 1: Influence des produits à base de ciment 1: Einfluss fabrikmäßig hergestellter

fabriqués en usine sur les paramètres organoleptiques zementgebundener Produkte auf organoleptische

Parameter

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 14944-1:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

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

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

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

4 Principle ........................................................................................................................................................... 12

5 Reagents ........................................................................................................................................................... 12

6 Apparatus ........................................................................................................................................................ 14

7 Samples and test pieces .............................................................................................................................. 16

8 Pre-treatment of samples (curing and preconditioning) ............................................................... 18

9 Test procedure ............................................................................................................................................... 19

10 Determination of odour as TON and flavour as TFN ........................................................................ 20

11 Determination of colour and turbidity ................................................................................................. 20

12 Determination of TOC and calculation of test results ...................................................................... 20

13 Expression of results ................................................................................................................................... 22

14 Test report ....................................................................................................................................................... 22

Annex A (normative) Additional procedures for testing factory-made pipes (cement mortar

lined and concrete) ...................................................................................................................................... 25

A.1 Sampling, test piece preparation and storage .................................................................................... 25

A.2 Surface area to volume (S/V) ratio ......................................................................................................... 29

A.3 Preconditioning of test pieces .................................................................................................................. 29

A.4 Test procedure ............................................................................................................................................... 29

A.5 Expression of results ................................................................................................................................... 29

A.6 Reporting ......................................................................................................................................................... 29

Annex B (normative) Additional procedures for testing factory-made fittings (cement

mortar lined and concrete) ....................................................................................................................... 30

B.1 Sampling, test piece preparation and storage .................................................................................... 30

B.2 Surface area to volume (S/V) ratio ......................................................................................................... 34

B.3 Preconditioning of test pieces) ................................................................................................................ 34

B.4 Test procedure ............................................................................................................................................... 34

B.5 Expression of results ................................................................................................................................... 35

B.6 Reporting ......................................................................................................................................................... 35

---------------------- Page: 4 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)

Annex C (normative) Additional procedures for testing factory-made storage systems

(cement mortar, cement mortar lined and concrete) ..................................................................... 36

C.1 Sampling, test piece preparation and storage ................................................................................... 36

C.2 Surface area to volume (S/V) ratio ......................................................................................................... 40

C.3 Preconditioning of test pieces .................................................................................................................. 40

C.4 Test procedure .............................................................................................................................................. 40

C.5 Expression of results ................................................................................................................................... 40

C.6 Reporting ......................................................................................................................................................... 40

Annex D (informative) Examples of typical test pieces and test conditions as a function of

S/V ratio ........................................................................................................................................................... 41

D.1 General ............................................................................................................................................................. 41

D.2 Pipes and fittings .......................................................................................................................................... 41

D.3 Test pieces to which a cylinder of stainless steel or glass is to be attached ............................ 42

D.4 Square test plates coated with mortar .................................................................................................. 43

D.5 Moulded test pieces where all faces are exposed to test water ................................................... 43

Annex E (informative) Test arrangements for testing factory-made cement based products ...... 46

Annex F (normative) Additional procedures for testing factory-made cement based

products at elevated temperature.......................................................................................................... 53

F.1 General ............................................................................................................................................................. 53

F.2 Test procedure at elevated temperature ............................................................................................. 53

F.3 Control samples (blank test) .................................................................................................................... 53

F.4 Expression of results ................................................................................................................................... 54

F.5 Reporting ......................................................................................................................................................... 54

Annex G (informative) Discrimination between porous and non-porous coatings on

factory-made products ............................................................................................................................... 55

G.1 Principle ........................................................................................................................................................... 55

G.2 Apparatus ........................................................................................................................................................ 55

G.3 Materials and reagents ............................................................................................................................... 55

G.4 Test procedure .............................................................................................................................................. 55

G.5 Determination of pH .................................................................................................................................... 57

G.6 Expression of results ................................................................................................................................... 57

G.7 Classification criteria .................................................................................................................................. 57

Annex H (informative) Schematic description of the test procedure ..................................................... 58

H.1 Preconditioning ............................................................................................................................................. 58

H.2 Production of migration water for organoleptic assessment at 23 °C ...................................... 58

H.3 Typical Schedule ........................................................................................................................................... 60

Bibliography ................................................................................................................................................................. 61

---------------------- Page: 5 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
---------------------- Page: 6 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
European foreword

This document (prEN 14944-1:2021) 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 14944-1:2006.
In comparison with EN 14944-1:2006, the following changes have been made:

— provisions for testing the influence of materials on the migration of organic substances (TOC)

have been added,

— the test method for TON /TFN according to EN 1622 has been specified according to the revised

EN 1420,

— requirements for disinfection (preconditioning with 50 mg/L Chlorine) have been removed,

— a procedure for extending the number of migration periods has been included.
---------------------- Page: 7 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
Introduction

This document describes a test method to determine the influence(s) of factory-made cement based

products on organoleptic parameters and the migration of organic substances (TOC) in water intended

for human consumption.

This European Standard 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 consumption.

This European Standard 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.
---------------------- Page: 8 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
1 Scope

This document specifies a method to determine the influence of factory-made cement based products

on the odour, flavour, colour, turbidity and total organic carbon (TOC) of test waters after contact with

the products.

This document is applicable to factory-made cement based products, e.g. cement mortar linings to

metallic pipes, tanks, concrete pipes, etc. intended to be used for the transport and storage of water 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 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 196-1, Methods of testing cement - Part 1: Determination of strength

EN 1420:2016, Influence of organic materials on water intended for human consumption - Determination

of odour and flavour assessment of water in piping systems

EN 1484, Water analysis - Guidelines for the determination of total organic carbon (TOC) and dissolved

organic carbon (DOC)

EN 1622:2006, Water quality - Determination of the threshold odour number (TON) and threshold flavour

number (TFN)

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 10088-1:2014, 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 27888, Water quality - Determination of electrical conductivity (ISO 7888)

EN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

EN ISO 7027:1999, Water quality - Determination of turbidity (ISO 7027:1999)

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)
---------------------- Page: 9 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)

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 7887:2011, Water quality - Examination and determination of colour (ISO 7887:2011)

EN ISO 9963-2, Water quality - Determination of alkalinity - Part 2: Determination of carbonate alkalinity

(ISO 9963-2)

EN ISO 16264, Water quality - Determination of soluble silicates by flow analysis (FIA and CFA) and

photometric detection (ISO 16264)

ISO 6058, Water quality — Determination of calcium content — EDTA titrimetric method

EN ISO 10523, Water quality - Determination of pH
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 test 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
---------------------- Page: 10 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
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

3.9
odour

sensation perceived by means of the olfactory organ in sniffing certain volatile substances

SOURCE: ISO 5492:2008, 3.18
3.10
flavour

complex combination of the olfactory, gustatory, and trigeminal sensations perceived during tasting

Note 1 to entry: The flavour may be influenced by tactile, thermal, painful and/or kinaesthetic effects.

SOURCE: ISO 5492:2008, 3.20 [2]
3.11
colour of water

optical property that causes the changing of the spectral composition of transmitted visible light

measured at three wavelengths
SOURCE: EN ISO 7887:2011, 3.2
3.12
turbidity
reduction of transparency of a water due to the presence of undissolved matter
Note 1 to entry: See EN ISO 7027:1999, 3.1.
---------------------- Page: 11 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
3.13
threshold odour number
TON

dilution ratio of the migration water with the reference water at the same temperature, beyond which

this diluted sample does not have any perceptible odour
Note 1 to entry: See EN 1622.
3.14
threshold flavour number
TFN

dilution ratio of the migration water with the reference water at the same temperature, beyond which

this diluted sample does not have any perceptible flavour
Note 1 to entry: See EN 1622.
3.15
total organic carbon
TOC

sum of organically bound carbon present in water, bonded to dissolved or suspended matter, including

cyanate,elemental carbon and thiocyanate
SOURCE: EN 1484:1997, 3.3, modified
3.16
testing panel
group of people meeting the relevant requirements of EN 1622
3.17
test

technical operation that consists of the determination of one or more characteristics of a given product

3.18
test procedure
specified technical method for performing a test
3.19
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
3.20
test piece

sample or portion which is to be conditioned, treated or otherwise prepared to be tested to obtain a

single test result
---------------------- Page: 12 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
3.21
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).

3.22
preconditioning

succession of contact periods of a test piece with the preconditioning water (3.23) before contact with

the test water
3.23
preconditioning water
water used for preconditioning
Note 1 to entry: prepared as described in 5.3.1
3.24
reference water
water described as without odour, flavour, colour and turbidity
Note 1 to entry: conforming to the requirements in 5.3.2
3.25
test water
water used for testing purposes
Note 1 to entry: prepared as described in 5.3.3 and 5.3.4
3.26
migration water:

test water which has been in contact with a test piece under specified conditions

[SOURCE: EN 1622:2006, 3.13]
3.27
blank water

test water which has been kept at the same specified conditions as migration water but without contact

with the test piece
3.28
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.
3.29
demineralized water
water conforming to the requirements in EN ISO 3696:1995 for Grade 3
---------------------- Page: 13 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
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.

After each contact period, each migration water is assessed for odour, flavour, colour, turbidity and

TOC.
NOTE: The selection of:

a) the appropriate test water, chlorinated and/or chlorine-free, from those made available in this

European Standard,
b) the temperature of the test water,
c) the need for chlorination during preconditioning

is specified in product or system standards or in national or European regulations, as appropriate.

5 Reagents
5.1 Chlorine neutralization reagents

5.1.1 Ascorbic acid solution, prepared by dissolving (4,0 ± 0,1) g of ascorbic acid in one litre of

reference water (5.3.2).
This ascorbic acid solution shall be replaced on a monthly basis.

5.1.2 Sodium thiosulfate solution, comprising a solution of 3,5 g/l of sodium thiosulfate

pentahydrate (Na S O 5 H O) and stored in the absence of light at a temperature below 10 °C, for a

2 2 3 2
maximum of 4 months.

Sodium hypochlorite solution, prepared from a commercial solution of sodium hypochlorite (NaOCl)

and have a known concentration of ± 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 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.

---------------------- Page: 14 ----------------------
oSIST prEN 14944-1:2021
prEN 14944-1:2021 (E)
5.3 Waters to be used for testing

5.3.1 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

(3.29). The pH is determined in accordance with EN 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.

5.3.2 Reference water, a natural water without gas and with parameters that conform to the

requirements given in Table 1.

When the reference water is chlorinated to 1,0 mg/l free chlorine and then dechlorinated after 72 h

with either the ascorbic acid solution (5.1.1) or the sodium thiosulfate solution (5.1.2), its organoleptic

parameters, odour, flavour colour and turbidity shall conform to the requirements given in Table 1.

When the reference water is prepared from demineralised water, dissolve (222 ± 2) mg anhydrous

calcium chloride (CaCl2), (482 ± 2) mg sodium hydrogencarbonate (NaHCO3) and (71 ± 1) mg sodium

silicate (Na2SiO3·9·H2O) in 1 l of demineralised water (3.29). The pH is determined in accordance with

EN ISO 10523 and adjusted to 7,4 ± 0,1 by bubbling air and/or CO2 into the solution.

Table 1 — Reference water
Parameter Requirement Unit
Test method
Conductivity EN 27888 500 ± 50 µS/cm
pH EN ISO 10523 7,3 ± 0,2 pH unit
Calcium ISO 6058 80 ± 10 mg Ca/l
Alkalinity EN ISO 9963-
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.