SIST EN ISO 7979:2025
(Main)Leather - Tests for colour fastness - Colour fastness to hydroalcoholic mixtures (ISO 7979:2025)
Leather - Tests for colour fastness - Colour fastness to hydroalcoholic mixtures (ISO 7979:2025)
This document specifies methods for determining the fastness of the surface of leather to hydroalcoholic mixtures.
It is applicable to all kinds of leather.
Leder - Farbechtheitsprüfung - Bestimmung der Farbechtheit gegenüber hydroalkoholischen Desinfektionsmitteln (ISO 7979:2025)
Dieses Dokument legt Verfahren zur Bestimmung der Farbechtheit der Oberfläche von Leder gegenüber hydroalkoholischen Mischungen (Wasser-Alkohol-Mischungen) fest.
Es ist auf alle Lederarten anwendbar.
Cuir - Essais de solidité des coloris - Solidité des coloris aux mélanges hydroalcooliques (ISO 7979:2025)
Le présent document spécifie des méthodes de détermination de la solidité de la surface du cuir aux mélanges hydroalcooliques.
Il s’applique à tous les types de cuir.
Usnje - Preskušanje barvne obstojnosti - Barvna obstojnost v hidroalkoholni zmesi (ISO 7979:2025)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Usnje - Preskušanje barvne obstojnosti - Barvna obstojnost v hidroalkoholni
zmesi (ISO 7979:2025)
Leather - Tests for colour fastness - Colour fastness to hydroalcoholic mixtures (ISO
7979:2025)
Leder - Farbechtheitsprüfung - Bestimmung der Farbechtheit gegenüber
hydroalkoholischen Desinfektionsmitteln (ISO 7979:2025)
Cuir - Essais de solidité des coloris - Solidité des coloris aux mélanges hydroalcooliques
(ISO 7979:2025)
Ta slovenski standard je istoveten z: EN ISO 7979:2025
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 7979
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 59.140.30
English Version
Leather - Tests for colour fastness - Colour fastness to
hydroalcoholic mixtures (ISO 7979:2025)
Cuir - Essais de solidité des coloris - Solidité des coloris Leder - Farbechtheitsprüfung - Bestimmung der
aux mélanges hydroalcooliques (ISO 7979:2025) Farbechtheit gegenüber hydroalkoholischen
Desinfektionsmitteln (ISO 7979:2025)
This European Standard was approved by CEN on 3 July 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 7979:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 7979:2025) has been prepared by Technical Committee ISO/IULTCS
"International Union of Leather Technologists and Chemists Societies" in collaboration with Technical
Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI.
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 January 2026, and conflicting national standards shall
be withdrawn at the latest by January 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.
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 7979:2025 has been approved by CEN as EN ISO 7979:2025 without any modification.
International
Standard
ISO
IULTCS
IUF 428
First edition
Leather — Tests for colour fastness
2025-07
— Colour fastness to hydroalcoholic
mixtures
Cuir — Essais de solidité des coloris — Solidité des coloris aux
mélanges hydroalcooliques
Reference numbers
ISO 7979:2025(en)
IULTCS/IUF 428:2025(en) © ISO 2025
ISO 7979:2025(en)
IULTCS/IUF 428:2025(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 7979:2025(en)
IULTCS/IUF 428:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Equipment and materials . 2
6 Procedure . 3
6.1 General .3
6.2 Conditioning and test atmosphere conditions .3
6.3 Test media .3
6.3.1 Preparation of the test media .3
6.3.2 Standard test medium .3
6.4 Method 1, surface wetting . .4
6.5 Method 2, linear rubbing test with hydroalcoholic mixtures .4
6.5.1 Method 2, procedure A test.4
6.5.2 Method 2, procedure B test . .5
6.6 Cleaning of test specimens .5
7 Evaluation . 5
8 Test report . 6
Annex A (normative) Visual evaluation scheme . 7
iii
ISO 7979:2025(en)
IULTCS/IUF 428:2025(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 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).
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.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further
the advancement of leather science and technology. IULTCS has three Commissions, which are responsible
for establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an
international standardizing body for the preparation of test methods for leather.
This document was prepared by the Fastness Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUF Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
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 7979:2025(en)
International Standard
IULTCS/IUF 428:2025(en)
Leather — Tests for colour fastness — Colour fastness to
hydroalcoholic mixtures
1 Scope
This document specifies methods for determining the fastness of the surface of leather to hydroalcoholic
mixtures.
It is applicable to all kinds of leather.
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.
ISO 105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 105-A03, Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining
ISO 105-F09, Textiles — Tests for colour fastness — Part F09: Specification for cotton rubbing cloth
ISO 2419, Leather — Physical and mechanical tests — Specimen and test piece conditioning
ISO 2813, Paints and varnishes — Determination of gloss value at 20°, 60° and 85°
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 7906, Leather
...
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