Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 2: Laboratory determination of chloride on cleaned surfaces (ISO 8502-2:2017)

This part of ISO 8502 describes a method for the determination of chloride-containing salts that are
readily soluble in water and are present on a steel surface. The method is also applicable to previously
coated surfaces. This part of ISO 8502 includes a method, applicable in the field or in the laboratory, for
washing off the surface while several methods are referred to for chloride analyses.
NOTE 1 ISO 8502-5 describes a field test for the determination of chloride on a surface.
NOTE 2 The precision of the method is limited by both the accuracy of the selected method of analyses and by
uncertainties in the sampling procedure. The extraction method might not take all the water soluble material off
the surface due to
— soluble material hiding in crevices, under folds of metal or at the bottom of pits, and
— soluble material hiding under corrosion layers, passivation layers, inhibitors, oil, grease, or other non-visible
thin films as these boundary layers can prevent contact with the underlying salt for its removal.
NOTE 3 The performance of a paint system is affected by the amount of soluble chloride remaining on the
surface. The acceptable level of this contamination is related to the service conditions. For further information
regarding levels of water-soluble salt contamination, see ISO/TR 15235.

Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen - Prüfungen zum Beurteilen der Oberflächenreinheit - Teil 2: Laborbestimmung von Chlorid auf gereinigten Oberflächen (ISO 8502-2:2017)

Dieser Teil von ISO 8502 beschreibt ein Verfahren zum Bestimmen von in Wasser leicht löslichen chloridhaltigen Salzen, die sich auf einer Stahloberfläche befinden. Das Verfahren ist auch bei beschichteten Oberflächen anwendbar. Dieser Teil von ISO 8502 beinhaltet ein Verfahren zum Waschen der Oberfläche unter Verwendung verschiedener Analyseverfahren zur Bestimmung chloridhaltiger Salze, welches sowohl auf der Baustelle als auch im Labor durchgeführt werden kann.
Das Verfahren ist zum Bestimmen von Salzen anwendbar, die durch den Reinigungsprozess eingeschleppt wurden oder die sich vor oder nach dem Reinigen abgelagert haben.
ANMERKUNG 1   ISO 8502-5 beschreibt eine Feldprüfung zum Bestimmen von Chloridionen auf einer Oberfläche.
ANMERKUNG 2   Die Genauigkeit des Verfahrens ist durch die Genauigkeit der gewählten Analyseverfahren als auch durch die Unsicherheiten bei der Probenahme eingeschränkt. Mit dem Extraktionsverfahren werden möglicherweise nicht alle wasserlöslichen Werkstoffe von der Oberfläche entfernt, da sich:
—   lösliche Stoffe, die sich in Spalten, unter Werkstoff-Falten oder am Boden von Gräben, verstecken und
—   lösliche Stoffe, die sich unter Korrosionsschichten, Passivierungsschichten, Hemmern, Öl, Fett oder anderen unsichtbaren dünnen Filmen, wie diesen Grenzschichten, verstecken und den Kontakt mit dem darunterliegenden Salz, zu dessen Entfernung, verhindern können.
ANMERKUNG 3   Die Haltbarkeit eines Beschichtungssystems wird durch die auf der Stahloberfläche verbleibenden löslichen Chloride beeinträchtigt. Der vertretbare Grenzwert für diese Verunreinigung hängt von den Einsatzbedingungen ab. Für weitere Angaben zu Graden der Verunreinigung durch wasserlösliche Salze siehe ISO/TR 15235.

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés - Essais pour apprécier la propreté d'une surface - Partie 2: Recherche en laboratoire des chlorures sur les surfaces nettoyées (ISO 8502-2:2017)

ISO 8502-2:2017 décrit une méthode de recherche des sels contenant des chlorures très solubles dans l'eau et présents à la surface d'un subjectile d'acier. Cette méthode est également applicable à des surfaces qui ont déjà été revêtues. ISO 8502-2-:2017 comporte une méthode, applicable sur site ou en laboratoire, de nettoyage de la surface, tandis qu'il est fait référence à plusieurs autres méthodes pour les analyses des chlorures.

Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusi za ocenjevanje čistosti površine - 2. del: Laboratorijsko določevanje kloridov na očiščenih površinah (ISO 8502-2:2017)

Ta del standarda ISO 8502 opisuje metodo za določanje soli, ki vsebujejo klorid ter so
zlahka topne v vodi in prisotne na jekleni površini. Ta metoda se uporablja tudi za predhodno prevlečene površine. Ta del standarda ISO 8502 vključuje metodo, ki se uporablja na terenu ali v laboratoriju, za spiranje površine hkrati s sklicevanjem na več metod za analizo klorida.
OPOMBA 1: ISO 8502-5 opisuje preskus na terenu za ugotavljanje klorida na površini.
OPOMBA 2: Natančnost te metode je omejena s točnostjo izbrane metode analiz in z negotovostmi pri postopku vzorčenja. Z metodo ekstrahiranja se s površine morda ne bo odstranil ves v vodi topen material zaradi:
– topnega materiala, skritega v razpokah, pod plastmi kovine ali na dnu jame, in
– topnega materiala, skritega pod korozivnimi plastmi, pasiviranimi plastmi, zaviralci, oljem, mastjo ali drugimi nevidnimi tankimi sloji, saj te mejne plasti lahko preprečijo stik s sol za njegovo odstranitev.
OPOMBA 3: Zmogljivost sistema barvil je odvisna od količine topnega klorida, ki ostane na površini. Sprejemljiva raven te onesnaženosti je povezana s pogoji delovanja. Za dodatne informacije glede ravni onesnaženosti z vodotopno soljo glej standard ISO/TR 15235.

General Information

Status
Published
Public Enquiry End Date
28-Feb-2014
Publication Date
17-Apr-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Apr-2017
Due Date
08-Jun-2017
Completion Date
18-Apr-2017

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 8502-2:2017
01-maj-2017
1DGRPHãþD
SIST EN ISO 8502-2:2006
3ULSUDYDMHNOHQLKSRGODJSUHGQDQDãDQMHPEDUYLQVRURGQLKSUHPD]RY3UHVNXVL
]DRFHQMHYDQMHþLVWRVWLSRYUãLQHGHO/DERUDWRULMVNRGRORþHYDQMHNORULGRYQD
RþLãþHQLKSRYUãLQDK ,62
Preparation of steel substrates before application of paints and related products - Tests
for the assessment of surface cleanliness - Part 2: Laboratory determination of chloride
on cleaned surfaces (ISO 8502-2:2017)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Prüfungen zum Beurteilen der Oberflächenreinheit - Teil 2: Laborbestimmung von
Chlorid auf gereinigten Oberflächen (ISO 8502-2:2017)
Préparation des subjectiles d'acier avant application de peintures et de produits
assimilés - Essais pour apprécier la propreté d'une surface - Partie 2: Recherche en
laboratoire des chlorures sur les surfaces nettoyées (ISO 8502-2:2017)
Ta slovenski standard je istoveten z: EN ISO 8502-2:2017
ICS:
25.220.10 Priprava površine Surface preparation
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
SIST EN ISO 8502-2:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8502-2:2017

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SIST EN ISO 8502-2:2017


EN ISO 8502-2
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2017
EUROPÄISCHE NORM
ICS 25.220.10 Supersedes EN ISO 8502-2:2005
English Version

Preparation of steel substrates before application of paints
and related products - Tests for the assessment of surface
cleanliness - Part 2: Laboratory determination of chloride
on cleaned surfaces (ISO 8502-2:2017)
Préparation des subjectiles d'acier avant application de Vorbereitung von Stahloberflächen vor dem Auftragen
peintures et de produits assimilés - Essais pour von Beschichtungsstoffen - Prüfungen zum Beurteilen
apprécier la propreté d'une surface - Partie 2: der Oberflächenreinheit - Teil 2: Laborbestimmung von
Recherche en laboratoire des chlorures sur les surfaces Chlorid auf gereinigten Oberflächen (ISO 8502-2:2017)
nettoyées (ISO 8502-2:2017)
This European Standard was approved by CEN on 19 September 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8502-2:2017 E
worldwide for CEN national Members.

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SIST EN ISO 8502-2:2017
EN ISO 8502-2:2017 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 8502-2:2017
EN ISO 8502-2:2017 (E)
European foreword
This document (EN ISO 8502-2:2017) 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 August 2017, and conflicting national standards shall
be withdrawn at the latest by August 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 8502-2:2005.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8502-2:2017 has been approved by CEN as EN ISO 8502-2:2017 without any
modification.


3

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SIST EN ISO 8502-2:2017

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SIST EN ISO 8502-2:2017
INTERNATIONAL ISO
STANDARD 8502-2
Third edition
2017-01
Preparation of steel substrates before
application of paints and related
products — Tests for the assessment
of surface cleanliness —
Part 2:
Laboratory determination of chloride
on cleaned surfaces
Préparation des subjectiles d’acier avant application de peintures
et de produits assimilés — Essais pour apprécier la propreté d’une
surface —
Partie 2: Recherche en laboratoire des chlorures sur les surfaces
nettoyées
Reference number
ISO 8502-2:2017(E)
©
ISO 2017

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SIST EN ISO 8502-2:2017
ISO 8502-2:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

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SIST EN ISO 8502-2:2017
ISO 8502-2:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Reagents and materials . 1
5 Apparatus . 2
6 Procedure. 2
7 Expression of results . 3
8 Test report . 3
Annex A (informative) Determination of chloride by coulometric titration .5
Bibliography . 6
© ISO 2017 – All rights reserved iii

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SIST EN ISO 8502-2:2017
ISO 8502-2:2017(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 on 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 the following URL: www . i so .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.
This third edition cancels and replaces the second edition (ISO 8502-2:2005), which has been technically
revised with the following changes:
a) the analysis method has been deleted;
b) a selection of analysis methods from other standards have been added;
c) the coulometric method has been added and briefly described in an informative annex;
d) the formula in Clause 7 has been replaced by Formula (1) transforming chloride concentration in a
solution to amount of chloride on the surface;
e) the document has been editorially revised.
ISO 8502 consists of the following parts, under the general title Preparation of steel substrates before
application of paints and related products — Tests for the assessment of surface cleanliness:
— Part 2: Laboratory determination of chloride on cleaned surfaces
— Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)
— Part 4: Guidance on the estimation of the probability of condensation prior to paint application
— Part 5: Measurement of chloride on steel surfaces prepared for painting (ion detection tube method)
— Part 6: Extraction of soluble contaminants for analysis — The Bresle method
— Part 9: Field method for the conductometric determination of water-soluble salts
— Part 11: Field method for the turbidimetric determination of water-soluble sulfate
— Part 12: Field method for the titrimetric determination of water-soluble ferrous ions
iv © ISO 2017 – All rights reserved

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