EN ISO 7906:2022

Leather - Tests for colour fastness - General principles of testing (ISO 7906:2022)

EN ISO 7906:2022

Name:EN ISO 7906:2022   Standard name:Leather - Tests for colour fastness - General principles of testing (ISO 7906:2022)
Standard number:EN ISO 7906:2022   language:English language
Release Date:08-Nov-2022   technical committee:CEN/TC 289 - Leather
Drafting committee:CEN/TC 289/WG 3 - Fastness test methods   ICS number:59.140.30 - Leather and furs

SLOVENSKI STANDARD
01-januar-2023
Usnje - Preskušanje obstojnosti barve - Splošna načela preskušanja (ISO
7906:2022)
Leather - Tests for colour fastness - General principles of testing (ISO 7906:2022)
Leder - Farbechtheitsprüfungen - Allgemeine Grundsätze der Prüfung (ISO 7906:2022)
Cuir - Essais de solidité des coloris - Principes généraux s’appliquant aux essais (ISO
7906:2022)
Ta slovenski standard je istoveten z: EN ISO 7906:2022
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 7906
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 59.140.30
English Version
Leather - Tests for colour fastness - General principles of
testing (ISO 7906:2022)
Cuir - Essais de solidité des coloris - Principes Leder - Farbechtheitsprüfungen - Allgemeine
généraux s'appliquant aux essais (ISO 7906:2022) Grundsätze der Prüfung (ISO 7906:2022)
This European Standard was approved by CEN on 20 October 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 7906:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 7906:2022) 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 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.
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 7906:2022 has been approved by CEN as EN ISO 7906:2022 without any modification.

INTERNATIONAL ISO
STANDARD 7906
IULTCS
IUF 120
First edition
2022-10
Leather — Tests for colour fastness —
General principles of testing
Cuir — Essais de solidité des coloris — Principes généraux
s’appliquant aux essais
Reference numbers
ISO 7906:2022(E)
IULTCS/IUF 120:2022(E)
ISO 7906:2022(E)
IULTCS/IUF 120:2022(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: [email protected]
Website: www.iso.org
Published in Switzerland
ii
ISO 7906:2022(E)
IULTCS/IUF 120:2022(E)
Contents Page
Foreword .iv
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 1
4 G ener a l pr i nc iple s . 2
5 Outline of form of the methods . .2
6 T he “Scope” clause . 2
7 T he “Normative references” clause. 2
8 The “Terms and definitions” clause . 2
9 The “Principle” clause . 2
10 T he “Apparatus”, “Reagents” or “Reference materials” clause(s) . 2
10.1 G eneral . 2
10 . 2 Te s t s olut ion s . 3
10.3 A djacent materials . . 3
10.4 C oating substances . 4
10.5 S tandard reference for fading . 4
10.6 S tandard reference for rubbing and soiling. 4
10.7 S election and use of adjacent fabrics . 4
10.7.1 General . 4
10.7.2 Types of adjacent fabric . 4
10.7.3 Dimensions and use of adjacent fabrics . 4
11 The “Test specimen” clause .5
11.1 General . 5
11.2 P reparation of specimens . 5
11.3 P reparation of composite specimens . 5
11.3.1 General . 5
11.3.2 St aples . 5
11.3.3 Composite specimens using two single-fibre adjacent fabrics . 5
11.3.4 Composite specimens using one multifibre adjacent fabric . 6
12 C ond it ion i n g .6
13 T he “Procedure” clause . 6
14 A ssessment of colour fastness .7
14.1 G eneral conditions . 7
14.2 C olour fastness with respect to change in colour . 7
14.3 C olour fastness with respect to staining . 8
15 Conditions of viewing and illumination in assessing colour fastness .8
16 Te s t r ep or t . 8
Annex A (informative) Leather fastness test methods .10
Bibliography .11
iii
ISO 7906:2022(E)
IULTCS/IUF 120:2022(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 right
...

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