ISO 105-X11:2026

International
Standard
ISO 105-X11
Fifth edition
Textiles — Tests for colour
2026-06
fastness —
Part X11:
Colour fastness to hot pressing
Textiles — Essais de solidité des coloris —
Partie X11: Solidité des coloris au pressage à chaud
Reference number
© ISO 2026
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Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
4.1 Dry pressing .1
4.2 Damp pressing .2
4.3 Wet pressing .2
4.4 Assessment .2
5 Apparatus . 2
6 Test specimen . 3
7 Procedure . 3
7.1 General .3
7.2 Dry pressing .3
7.3 Damp pressing .3
7.4 Wet pressing .4
7.5 Assessment .4
8 Test report . 4
Bibliography . 5

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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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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
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This document was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 1, Tests for
coloured textiles and colorants, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 105-X11:1994), which has been technically
revised.
The main changes are as follows:
— in subclause 7.1.1, the pressing temperatures have been changed to 120 °C, 160 °C and 210 °C, instead of
110 °C, 150 °C and 200 °C, in line with the ISO 3758:2023.
A list of all parts in the ISO 105 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.

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International Standard ISO 105-X11:2026(en)
Textiles — Tests for colour fastness —
Part X11:
Colour fastness to hot pressing
1 Scope
This document specifies a method for determining the resistance of the colour of textiles of all kinds and in
all forms to ironing and to processing on hot cylinders.
This document is applicable for hot pressing when the textile is dry, damp or wet which is determined by the
end-use of the textile.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
...