SIST EN ISO 105-X11:2026

• Abstract:

  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.

• Status: Published
• Public Enquiry End Date: 23-Nov-2024
• Publication Date: 13-Jul-2026
• ICS: 59.080.01 - Textiles in general
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Jul-2026
• Due Date: 13-Sep-2026
• Completion Date: 14-Jul-2026
• Ref Project: EN ISO 105-X11:2026 - Textiles - Tests for colour fastness - Part X11: Colour fastness to hot pressing (ISO 105-X11:2026)

• Refers: SIST ISO 3696:1995 - Water for analytical laboratory use -- Specification and test methods
• Effective Date: 15-Jul-2026
• Referred By: SIST EN 1150:1999 - Protective clothing - Visibility clothing for non-professional use - Test methods and requirements
• Effective Date: 01-Jul-2026
• Referred By: SIST EN 16315:2014 - Textiles - Silk woven fabrics for women’s wears, foulards and scarves, ties - Requirements and test methods
• Effective Date: 01-Jul-2026
• Referred By: SIST EN 340:2004 - Protective clothing - General requirements
• Effective Date: 01-Jul-2026
• Revises: SIST EN ISO 105-X11:1999 - Textiles - Tests for colour fastness - Part X11: Colour fastness to hot pressing (ISO-X11:1994)
• Effective Date: 15-Nov-2023

Overview

SIST EN ISO 105-X11:2026 - Textiles – Tests for Colour Fastness – Part X11: Colour Fastness to Hot Pressing (ISO 105-X11:2026) specifies a standardized method for assessing the resistance of textile colors to hot pressing, including ironing and processing on hot cylinders. This international standard is relevant for textiles of all types and in all forms, ensuring that products retain their color quality during common finishing and maintenance processes.

The method detailed in this standard covers testing textiles while dry, damp, or wet, reflecting conditions encountered in real-world end-use scenarios. Reliable evaluation of color fastness during hot pressing is essential for textile manufacturers and quality assurance professionals to maintain product consistency and meet customer expectations.

Key Topics

• Colour Fastness to Hot Pressing: The standard provides detailed methodologies for determining how well textile colors withstand exposure to heat and pressure, as occurs with ironing or industrial pressing.
• Testing Conditions: Three pressing scenarios are evaluated:
  • Dry pressing: Simulates ironing or pressing when the textile is dry.
  • Damp pressing: Assesses color fastness when a wet cotton fabric is in contact with a dry specimen.
  • Wet pressing: Examines performance when both the specimen and adjacent fabric are wet.
• Assessment and Reporting: Results are measured by observing color changes and staining of adjacent fabrics, using grey scales for objective evaluation. Detailed test reports support traceability and quality documentation.
• Relevant Equipment: Specifies apparatus requirements, including a controllable heating device, pressure specifications (4 kPa ± 1 kPa), and the use of cotton fabrics as adjacent materials.

Applications

• Quality Control in Textile Manufacturing: The standard is integral for textile producers to verify that their dyes and materials can withstand typical post-production heat treatments. Assessment according to SIST EN ISO 105-X11 ensures that finished garments and fabrics will maintain their appearance during ironing or heat-based finishing.
• Product Development and Sourcing: Textile engineers and designers use this standard during product development to select appropriate dyes and finishing processes, reducing the risk of defective batches or customer returns.
• Textile Certification and Compliance: Certification bodies and customers may require proof of compliance with ISO 105-X11 to verify that textile products meet international color fastness expectations, aiding market access and regulatory alignment.
• End-Use Assurance: By simulating conditions such as domestic ironing or industrial laundry presses, the standard helps predict textile performance in real-life scenarios, supporting claims for product durability and quality.

Related Standards

• ISO 105-Series (Colour Fastness Tests): SIST EN ISO 105-X11:2026 is part of the wider ISO 105 series, which covers other aspects of color fastness, such as:
  • ISO 105-A01: General principles of testing
  • ISO 105-A02: Grey scale for assessing change in color
  • ISO 105-A03: Grey scale for assessing staining
  • ISO 105-F: Standard adjacent fabrics used for testing
  • ISO 105-P01: Colour fastness to dry heat (excluding pressing)
• ISO 139: Standard atmospheres for conditioning and testing textiles

Practical Value

Implementing the procedures in SIST EN ISO 105-X11:2026 helps ensure:

• Consistent, replicable color fastness testing results in research, manufacturing, and quality assurance.
• Improved customer satisfaction by minimizing issues with color changes or staining due to ironing or pressing.
• Efficient benchmarking of textile dyeing processes against internationally recognized test methods.

This standard is an indispensable reference for textile laboratories, manufacturers, quality auditors, and certifiers, supporting best practices in textile color fastness evaluation to hot pressing.

SLOVENSKI STANDARD
01-september-2026
Tekstilije - Preskušanje barvne obstojnosti - Del X11: Barvna obstojnost pri
vročem likanju (ISO 105-X11:2026)
Textiles - Tests for colour fastness - Part X11: Colour fastness to hot pressing (ISO 105-
X11:2026)
Textilien - Farbechtheitsprüfungen - Teil X11: Bestimmung der Farbechtheit gegen
Bügeln (ISO 105-X11:2026)
Textiles - Essais de solidité des coloris - Partie X11: Solidité des coloris au pressage à
chaud (ISO 105-X11:2026)
Ta slovenski standard je istoveten z: EN ISO 105-X11:2026
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 105-X11
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2026
EUROPÄISCHE NORM
ICS 59.080.01 Supersedes EN ISO 105-X11:1996
English Version
Textiles - Tests for colour fastness - Part X11: Colour
fastness to hot pressing (ISO 105-X11:2026)
Textiles - Essais de solidité des coloris - Partie X11: Textilien - Farbechtheitsprüfungen - Teil X11:
Solidité des coloris au pressage à chaud (ISO 105- Bestimmung der Farbechtheit gegen Bügeln (ISO 105-
X11:2026) X11:2026)
This European Standard was approved by CEN on 26 December 2024.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 105-X11:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 105-X11:2026) has been prepared by Technical Committee ISO/TC 38
"Textiles" in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the
secretariat of which is held by BSI.
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 December 2026, and conflicting national standards
shall be withdrawn at the latest by December 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 105-X11:1996.
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 105-X11:2026 has been approved by CEN as EN ISO 105-X11:2026 without any
modification.
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 105-X11:2026(en) © ISO 2026

ISO 105-X11:2026(en)
© ISO 2026
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 105-X11:2026(en)
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

iii
ISO 105-X11:2026(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 th
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