Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 9: Field method for the conductometric determination of water-soluble salts (ISO 8502-9:2020)

This document specifies a field method for the assessment of the surface density of various water-soluble
salts on steel surfaces, before and/or after surface preparation, by conductometric determination. The
individual surface densities of the salt composition like chlorides, sulphates, sodium, etc, cannot be
determined by this method.
This method assesses only contaminants that forms an electrolyte (ions) when in contact with water.
These represent the greater part of the contaminants.

Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen - Prüfungen zum Beurteilen der Oberflächenreinheit - Teil 9: Feldverfahren zur Bestimmung von wasserlöslichen Salzen durch Leitfähigkeitsmessung (ISO 8502-9:2020)

Dieses Dokument legt ein Feldverfahren zum Bestimmen der Oberflächendichte verschiedener wasserlöslicher Salze auf Stahloberflächen durch konduktometrische Bestimmung vor und/oder nach der Oberflächen¬vorbereitung fest. Die einzelnen Oberflächendichten der Salzzusammensetzung von Chloriden, Sulfaten, Natrium usw. können nach diesem Verfahren nicht bestimmt werden.
Dieses Verfahren erfasst nur Verunreinigungen, die einen Elektrolyten (Ionen) bilden, wenn sie mit Wasser in Kontakt kommen. Diese stellen den größeren Teil der Verunreinigungen dar.

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés - Essais pour apprécier la propreté d'une surface - Partie 9: Méthode in situ pour la détermination des sels solubles dans l'eau par conductimétrie (ISO 8502-9:2020)

Le présent document spécifie une méthode in situ permettant d'évaluer par conductimétrie la concentration des différents sels solubles dans l'eau sur les subjectiles d'acier avant et/ou après la préparation de surface. Les densités de surface individuelles des composés salés tels que les chlorures, les sulfates, le sodium, etc. ne peuvent pas être déterminées par cette méthode.
La méthode n'évalue que les contaminants qui forment un électrolyte (ions) au contact de l'eau. Ceux-ci représentent la majeure partie de la contamination.

Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusi za ocenjevanje čistosti površine - 9. del: Terenska metoda za konduktometrijsko določevanje soli, topnih v vodi (ISO 8502-9:2020)

General Information

Status
Published
Public Enquiry End Date
03-Jul-2019
Publication Date
29-Sep-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Sep-2020
Due Date
28-Nov-2020
Completion Date
30-Sep-2020

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SLOVENSKI STANDARD
SIST EN ISO 8502-9:2020
01-november-2020
Nadomešča:
SIST EN ISO 8502-9:2001
Priprava jeklenih podlag pred nanašanjem barv in sorodnih premazov - Preskusi
za ocenjevanje čistosti površine - 9. del: Terenska metoda za konduktometrijsko
določevanje soli, topnih v vodi (ISO 8502-9:2020)

Preparation of steel substrates before application of paints and related products - Tests

for the assessment of surface cleanliness - Part 9: Field method for the conductometric

determination of water-soluble salts (ISO 8502-9:2020)
Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen -
Prüfungen zum Beurteilen der Oberflächenreinheit - Teil 9: Feldverfahren zur
Bestimmung von wasserlöslichen Salzen durch Leitfähigkeitsmessung (ISO 8502-
9:2020)

Préparation des subjectiles d'acier avant application de peintures et de produits

assimilés - Essais pour apprécier la propreté d'une surface - Partie 9: Méthode in situ

pour la détermination des sels solubles dans l'eau par conductimétrie (ISO 8502-9:2020)

Ta slovenski standard je istoveten z: EN ISO 8502-9:2020
ICS:
25.220.10 Priprava površine Surface preparation
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
SIST EN ISO 8502-9:2020 en,fr,de

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

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SIST EN ISO 8502-9:2020
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SIST EN ISO 8502-9:2020
EN ISO 8502-9
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 25.220.10 Supersedes EN ISO 8502-9:2000
English Version
Preparation of steel substrates before application of paints
and related products - Tests for the assessment of surface
cleanliness - Part 9: Field method for the conductometric
determination of water-soluble salts (ISO 8502-9:2020)

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 9: Méthode der Oberflächenreinheit - Teil 9: Feldverfahren zur

in situ pour la détermination des sels solubles dans Bestimmung von wasserlöslichen Salzen durch

l'eau par conductimétrie (ISO 8502-9:2020) Leitfähigkeitsmessung (ISO 8502-9:2020)

This European Standard was approved by CEN on 22 June 2020.

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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8502-9:2020 E

worldwide for CEN national Members.
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SIST EN ISO 8502-9:2020
EN ISO 8502-9:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 8502-9:2020
EN ISO 8502-9:2020 (E)
European foreword

This document (EN ISO 8502-9:2020) 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 March 2021, and conflicting national standards shall

be withdrawn at the latest by March 2021.

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 8502-9:2000.

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, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 8502-9:2020 has been approved by CEN as EN ISO 8502-9:2020 without any

modification.
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SIST EN ISO 8502-9:2020
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SIST EN ISO 8502-9:2020
INTERNATIONAL ISO
STANDARD 8502-9
Second edition
2020-08
Preparation of steel substrates before
application of paints and related
products — Tests for the assessment
of surface cleanliness —
Part 9:
Field method for the conductometric
determination of water-soluble salts
Préparation des subjectiles d'acier avant application de peintures
et de produits assimilés — Essais pour apprécier la propreté d'une
surface —
Partie 9: Méthode in situ pour la détermination des sels solubles dans
l'eau par conductimétrie
Reference number
ISO 8502-9:2020(E)
ISO 2020
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SIST EN ISO 8502-9:2020
ISO 8502-9:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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 2020 – All rights reserved
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SIST EN ISO 8502-9:2020
ISO 8502-9:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus and materials.............................................................................................................................................................................. 2

5.1 Conductometer ....................................................................................................................................................................................... 2

5.2 Beaker ............................................................................................................................................................................................................. 2

5.3 Equipment for sampling ................................................................................................................................................................. 2

5.4 Syringe............................................................................................................................................................................................................ 2

5.5 Solvent ............................................................................................................................................................................................................ 2

6 Procedure..................................................................................................................................................................................................................... 2

6.1 Calibration .................................................................................................................................................................................................. 2

6.2 Preparation of water and equipment blank test ........................................................................................................ 2

6.3 Sampling of salts from the steel surface............................................................................................................................ 3

6.4 Conductometric measurement ................................................................................................................................................. 3

7 Calculations................................................................................................................................................................................................................ 3

7.1 Calculation of corrected volume .............................................................................................................................................. 3

7.2 Calculation of total amount of salt on the surface .................................................................................................... 3

7.3 Examples: Standard patch A-1250 and flexible sleeve S-1000 acc. to ISO 8502-6 ...................... 4

8 Accuracy ........................................................................................................................................................................................................................ 5

9 Test report ................................................................................................................................................................................................................... 6

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2020 – All rights reserved iii
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SIST EN ISO 8502-9:2020
ISO 8502-9:2020(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 second edition cancels and replaces the first edition (ISO 8502-9:1998), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— inclusion of new measurement methods according to the direct sample method;
— improved connection to ISO 8502-6, and all extraction types;

— dedication to water soluble salts to avoid confusion with other analysis methods;

— improvement to Figure 1 to clarify the use of other volumes for analysis.
A list of all parts in the ISO 8502 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 2020 – All rights reserved
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SIST EN ISO 8502-9:2020
ISO 8502-9:2020(E)
Introduction

The performance of protective coatings of paint and related products applied to steel is significantly

affected by the state of the steel surface immediately prior to painting. The principal factors that are

known to influence this performance are:
a) the presence of rust and mill scale;

b) the presence of surface contaminants, including salts, dust, oils and greases; and

c) the surface profiles.

ISO 8501, ISO 8502 and ISO 8503 have been prepared to provide methods of assessing these factors,

while ISO 8504 provides guidance on the preparation methods that are available for cleaning steel

substrates, indicating the capabilities of each in attaining specified levels of cleanliness.

These International Standards do not contain recommendations for the protective coating systems

to be applied to the steel surface. Neither do they contain recommendations for the surface quality

requirements for specific situations even though surface quality can have a direct influence on the

choice of protective coating to be applied and on its performance. Such recommendations are found in

other documents such as national standards and codes of practice. It is be necessary for the users of

these International Standards to ensure that the qualities specified are:

— compatible and appropriate both for the environmental conditions to which the steel is exposed and

for the protective coating system to be used, and
...

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