EN ISO 11997-2:2025

SLOVENSKI STANDARD
01-februar-2026
Nadomešča:
SIST EN ISO 11997-2:2014
Barve in laki - Ugotavljanje odpornosti proti cikličnim korozijskim pogojem - 2. del:
Mokro (slana megla)/suho/vlažno/UV-svetloba (ISO 11997-2:2025)
Paints and varnishes - Determination of resistance to cyclic corrosion conditions - Part 2:
Wet (salt fog)/dry/humid/UV light (ISO 11997-2:2025)
Beschichtungsstoffe - Bestimmung der Beständigkeit bei zyklischen
Korrosionsbedingungen - Teil 2: Nass (Salzsprühnebel)/trocken/feucht/UV-Strahlung
(ISO 11997-2:2025)
Peintures et vernis - Détermination de la résistance aux conditions de corrosion cyclique
- Partie 2: Brouillard salin/sécheresse/humidité/lumière UV (ISO 11997-2:2025)
Ta slovenski standard je istoveten z: EN ISO 11997-2:2025
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11997-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2025
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 11997-2:2013
English Version
Paints and varnishes - Determination of resistance to
cyclic corrosion conditions - Part 2: Wet (salt
fog)/dry/humid/UV light (ISO 11997-2:2025)
Peintures et vernis - Détermination de la résistance Beschichtungsstoffe - Bestimmung der Beständigkeit
aux conditions de corrosion cyclique - Partie 2: bei zyklischen Korrosionsbedingungen - Teil 2: Nass
Brouillard salin/sécheresse/humidité/lumière UV (ISO (Salzsprühnebel)/trocken/feucht/UV-Strahlung (ISO
11997-2:2025) 11997-2:2025)
This European Standard was approved by CEN on 4 November 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11997-2:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11997-2:2025) 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 2026, and conflicting national standards shall be
withdrawn at the latest by May 2026.
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 11997-2:2013.
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 11997-2:2025 has been approved by CEN as EN ISO 11997-2:2025 without any
modification.
International
Standard
ISO 11997-2
Third edition
Paints and varnishes —
2025-11
Determination of resistance to
cyclic corrosion conditions —
Part 2:
Wet (salt fog)/dry/humid/UV light
Peintures et vernis — Détermination de la résistance aux
conditions de corrosion cyclique —
Partie 2: Brouillard salin/sécheresse/humidité/lumière UV
Reference number
ISO 11997-2:2025(en) © ISO 2025

ISO 11997-2:2025(en)
© ISO 2025
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 11997-2:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 2
5 Salt fog test solution . 2
6 Apparatus . 2
7 Sampling . 3
8 Test panels . 3
8.1 Material and dimensions .3
8.2 Preparation and coating of panels .3
8.3 Drying and conditioning .3
8.4 Thickness of coating .3
8.5 Scribing of panels .3
9 Procedure . 3
10 Examination of test panels . 4
11 Test report . 4
Annex A (informative) Alternative test procedures . 6
Bibliography . 8

iii
ISO 11997-2:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 9, General test methods for paints and varnishes 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 11997-2:2013), which has been technically
revised.
The main changes are as follows:
— Clause 3, Terms and definitions, has been added;
— in A.3.2.2, the designation of the fluorescent UV lamps has been updated;
— the normative references have been updated.
A list of all parts in the ISO 11997 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 11997-2:2025(en)
Introduction
Coatings of paints, varnishes and similar materials are exposed to cyclic wet and dry corrosion and UV
exposure conditions using specified salt solutions in cabinets in order to simulate, in the laboratory, processes
occurring in aggressive outdoor conditions. Generally, valid correlations between such outdoor weathering
and laboratory testing cannot be expected because of the large number of factors influencing the breakdown
process. Certain relationships can only be expected if the effect on the coating of the important parameters
(e.g. nature of the pollutant, spectral distribution of the incident irradiance in the relevant photochemical
region, temperature of the specimen, type and cycle of wetting and relative humidity) is known. In contrast
to outdoor weathering, laboratory testing in a cabinet is performed with a reduced number of variables,
which can be controlled and therefore the effects are more reproducible.
The method described can give a means of checking that the quality of a paint or paint system is being
maintained. The method is intended to provide a more realistic simulation of these factors than is found
in traditional tests with continuous exposure to a static set of corrosive conditions. The method has been
found to be useful in comparing the cyclic salt spray resistance of different coatings. It is most useful in
providing relevant ratings for a series of coated panels exhibiting significant differences in cyclic salt spray/
UV exposure resistance tested at the same time and to the same test cycle.
The cycle specified in this document has been found useful for air-drying industrial maintenance coatings
on steel; other cycles may be used as required.

v
International Standard ISO 11997-2:2025(en)
Paints and varnishes — D
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