EN ISO 11127-7:2022

SLOVENSKI STANDARD
01-februar-2023
Nadomešča:
SIST EN ISO 11127-7:2012
Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusne
metode za nekovinske granulate za peskanje - 7. del: Določevanje klorida, topnega
v vodi (ISO 11127-7:2022)
Preparation of steel substrates before application of paints and related products - Test
methods for non-metallic blast-cleaning abrasives - Part 7: Determination of water-
soluble chlorides (ISO 11127-7:2022)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Prüfverfahren für nichtmetallische Strahlmittel - Teil 7: Bestimmung der wasserlöslichen
Chloride (ISO 11127-7:2022)
Préparation des subjectiles d'acier avant application de peintures et de produits
assimilés - Méthodes d'essai pour abrasifs non métalliques destinés à la préparation par
projection - Partie 7: Détermination des chlorures solubles dans l'eau (ISO 11127-
7:2022)
Ta slovenski standard je istoveten z: EN ISO 11127-7:2022
ICS:
25.220.10 Priprava površine Surface preparation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11127-7
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 25.220.10 Supersedes EN ISO 11127-7:2011
English Version
Preparation of steel substrates before application of paints
and related products - Test methods for non-metallic
blast-cleaning abrasives - Part 7: Determination of water-
soluble chlorides (ISO 11127-7:2022)
Préparation des subjectiles d'acier avant application de Vorbereitung von Stahloberflächen vor dem Auftragen
peintures et de produits assimilés - Méthodes d'essai von Beschichtungsstoffen - Prüfverfahren für
pour abrasifs non métalliques destinés à la préparation nichtmetallische Strahlmittel - Teil 7: Bestimmung der
par projection - Partie 7: Détermination des chlorures wasserlöslichen Chloride (ISO 11127-7:2022)
solubles dans l'eau (ISO 11127-7:2022)
This European Standard was approved by CEN on 27 November 2022.

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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11127-7:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11127-7:2022) has been prepared by Technical Committee ISO/TC 35 "Paints
and varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
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 May 2023, and conflicting national standards shall be
withdrawn at the latest by May 2023.
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 supersedes EN ISO 11127-7:2011.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 11127-7:2022 has been approved by CEN as EN ISO 11127-7:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 11127-7
Third edition
2022-11
Preparation of steel substrates before
application of paints and related
products — Test methods for non-
metallic blast-cleaning abrasives —
Part 7:
Determination of water-soluble
chlorides
Préparation des subjectiles d'acier avant application de peintures
et de produits assimilés — Méthodes d'essai pour abrasifs non
métalliques destinés à la préparation par projection —
Partie 7: Détermination des chlorures solubles dans l'eau
Reference number
ISO 11127-7:2022(E)
ISO 11127-7:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 11127-7:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Reagent . 2
5 Apparatus . 2
6 Sampling . 3
7 Procedure .3
8 Analysis by amperometric titration . .3
9 Analysis by spectrophotometry . 4
10 Analysis by ion chromatography . 5
11 Test report . 5
Bibliography . 6
iii
ISO 11127-7:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 12, Preparation of steel substrates before application of paints and related products, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and
varnishes, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This third edition cancels and replaces the second edition (ISO 11127-7:2011), which has been
technically revised.
The main changes are as follows:
— an Introduction has been added;
— the scope has been expanded to include spectrophotometric and ion chromatographic methods of
analysis;
— Clauses 3, 4, 9 and 10 have been added;
— the list of apparatus in Clause 5 has been expanded;
— Clause 8 has been renamed;
— Annex A has been deleted.
A list of all parts in the ISO 11127 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO 11127-7:2022(E)
Introduction
Amperometric titration against silver nitrate has been the established method of determining water-
soluble chlorides in non-metallic abrasives since the first edition of this document. Subsequently, other
methods of analysis offering faster and more sensitive determinations, namely ion chromatography
and spectrophotometry, have gained popularity. This document specifies three methods of analysis for
water-soluble chlorides.
The spectrophotometric determination of water-soluble chloride relies on the dissociation of mercuric
thiocyanate by chloride ions. In the presence of ferric ion, the liberated thiocyanate ion forms the
dark red coloured ferric thiocyanate complex in a concentration which is proportional to the original
chloride ion concentration. The concentration of the ferric thiocyanate is determined by measuring
the absorbance at 450 nm. This method can be used to determine chloride concentrations as low as
0,1 mg/l. Commercially available reagent kits offer determinations in the ranges 0,1 mg/l to 25 mg/l
and 1 mg/l to 70 mg/l. Portable spectrophotometers allow the adoption of this method as field method
of determination of water-soluble chloride. This method has also been adapted for flow injection
analysis.
The determination of chloride by ion chromatograph separates the chloride from
...