ISO 20433:2005

Leather — Tests for colour fastness — Colour fastness to crocking

ISO 20433:2005 specifies a method for determining the amount of colour transferred from the surface of coloured leather to other surfaces by rubbing. Two tests are carried out, one with a dry rubbing cloth and one with a wet rubbing cloth. The method is applicable to all types of coloured leather. Since after-treatments of the leather as well as surface finishes can affect the degree of colour transfer, the test can be made before and/or after such treatment.

Cuir — Essais de solidité des teintures — Solidité des teintures au frottement avec abrasion

General Information

• Status: Withdrawn
• Publication Date: 25-Jul-2005
• Withdrawal Date: 25-Jul-2005
• ICS: 59.140.30 - Leather and furs
• Technical Committee: IULTCS - International Union of Leather Technologists and Chemists Societies
• Drafting Committee: IULTCS - International Union of Leather Technologists and Chemists Societies
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 24-Sep-2012

Relations

• Revised: ISO 20433:2012 - Leather — Tests for colour fastness — Colour fastness to crocking
• Effective Date: 16-May-2009

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 20433
IULTCS/IUF
452
First edition
2005-07-15

Leather — Tests for colour fastness —
Colour fastness to crocking
Cuir — Essais de solidité des teintures — Solidité des teintures au
frottement avec abrasion




Reference number
ISO 20433:2005(E)
IULTCS/IUF 452:2005(E)
©
ISO 2005

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ISO 20433:2005(E)
IULTCS/IUF 452:2005(E)
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ii © ISO 2005 – All rights reserved

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ISO 20433:2005(E)
IULTCS/IUF 452:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 20433 was prepared by the Fastness Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUF Commission, IULTCS). It is based on IUF 452 published in J. Soc.
Leather Tech. Chem., 86, pp. 333-335, 2002, and declared an official method of the IULTCS in May 2003.
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.

© ISO 2005 – All rights reserved iii

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ISO 20433:2005(E)
INTERNATIONAL STANDARD
IULTCS/IUF 452:2005(E)

Leather — Tests for colour fastness — Colour fastness to
crocking
1 Scope
This International Standard specifies a method for determining the amount of colour transferred from the
surface of coloured leather to other surfaces by rubbing.
Two tests are carried out, one with a dry rubbing cloth and one with a wet rubbing cloth.
The method is applicable to all types of coloured leather. Since after-treatments of the leather as well as
surface finishes can affect the degree of colour transfer, the test can be made before and/or after such
treatment.
2 Normative references
The following referenced documents are indispensable for the application 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-A01, Textiles — Tests for colour fastness — Part A01: General principles of testing
ISO 105-A03, Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining
ISO 105-A04, Textiles — Tests for colour fastness — Part A04: Method for the instrumental assessment of
the degree of staining of adjacent fabrics
ISO 2418, Leather — Chemical, physical and mechanical and fastness tests — Sampling location
ISO 2419, Leather — Physical and mechanical tests — Sample preparation and conditioning
3 Principle
Specimens of leather are rubbed with a dry or wet rubbing cloth attached to a cylindrical finger that
...