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
• Publication Date: 23-Jun-2026
• ICS: 59.080.01 - Textiles in general
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 24-Jun-2026
• Completion Date: 24-Jun-2026
• Ref Project: SIST EN ISO 105-X11:2026 - Textiles - Tests for colour fastness - Part X11: Colour fastness to hot pressing (ISO 105-X11:2026)

• Replaces: EN ISO 105-X11:1996 - Textiles - Tests for colour fastness - Part X11: Colour fastness to hot pressing (ISO-X11:1994)
• Effective Date: 15-Nov-2023
• Refers: ISO 105-F02:2009 - Textiles — Tests for colour fastness — Part F02: Specification for cotton and viscose adjacent fabrics
• Effective Date: 15-Jul-2026
• Refers: ISO 105-A01:2010 - Textiles — Tests for colour fastness — Part A01: General principles of testing
• Effective Date: 15-Jul-2026
• Refers: ISO 3696:1987 - Water for analytical laboratory use — Specification and test methods
• Effective Date: 15-Jul-2026
• Refers: ISO 105-A03:2019 - Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining
• Effective Date: 15-Jul-2026
• Refers: ISO 139:2005 - Textiles — Standard atmospheres for conditioning and testing
• Effective Date: 15-Jul-2026
• Refers: ISO 105-A02:1993 - Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
• Effective Date: 15-Jul-2026
• Referred By: EN 1150:1999 - Protective clothing - Visibility clothing for non-professional use - Test methods and requirements
• Effective Date: 01-Jul-2026
• Referred By: EN 340:2003 - Protective clothing - General requirements
• Effective Date: 01-Jul-2026
• Referred By: EN 16315:2014 - Textiles - Silk woven fabrics for womenswear, silk squares, scarves and ties - Requirements and test methods
• Effective Date: 01-Jul-2026
• Consolidated By: ISO 105-X11:2026 - Textiles — Tests for colour fastness — Part X11: Colour fastness to hot pressing
• Effective Date: 12-Feb-2026

EN ISO 105-X11:2026 is a European Standard from the European Committee for Standardization (CEN) that adopts an International Organization for Standardization (ISO) method for textiles. It specifies how to determine the resistance of textile colour to hot pressing - ironing and processing on hot cylinders - for textiles of all kinds and forms, including dry, damp and wet conditions. It is used by test laboratories, manufacturers, quality teams and buyers who need comparable colour-fastness results.

What does EN ISO 105-X11:2026 specify?

EN ISO 105-X11:2026 specifies a laboratory method for testing colour fastness to hot pressing on textiles of all kinds and in all forms. The pressing condition is selected according to end use, so the method covers dry, damp and wet hot pressing.

The document is organized into clauses on scope, normative references, terms and definitions, principle, apparatus, test specimen, procedure and test report. In practice, that means it tells the user what to test, how to set up the press, how to prepare specimens, how to run the test and what to record.

What are the key requirements of EN ISO 105-X11:2026?

EN ISO 105-X11:2026 sets out a controlled pressing test and a grey-scale assessment of colour change and staining. The main point is to make results repeatable enough to compare materials and end uses.

Principle and assessment

Clause 4 defines three test modes: dry pressing, damp pressing and wet pressing. After pressing, the test specimen is assessed for colour change and the adjacent fabric for staining by comparison with the grey scales, immediately and again after air exposure in accordance with ISO 105-A01:2010, Clause 14. This matters because some colour change appears after the specimen has had time to condition.

Apparatus and materials

Clause 5 requires a heating device with smooth parallel plates and a pressure of 4 kPa ± 1 kPa. It also specifies a heat-resistant sheet, wool flannel padding, undyed bleached unmercerized cotton cloth, cotton adjacent fabric, grey scales and grade 3 water. In practice, these controls keep the heat transfer and contact conditions consistent from one test to another.

A household iron may be used if its temperature is measured and the pressure is set to the required level, but the document notes that accuracy and reproducibility are limited. If a hand iron is used, that must be stated in the report.

Specimens and conditioning

Clause 6 gives specimen preparation for fabric, yarn and loose fibre. Fabric is tested as a 40 mm × 100 mm specimen, yarn is either knitted into fabric or wound on inert material, and loose fibre is formed into a sheet supported by cotton adjacent fabric. Clause 7.1.2 requires conditioning in the standard atmosphere for testing textiles after any heat or drying treatment and before testing.

Pressing conditions

Clause 7.1.1 gives three common pressing temperatures: 120 °C, 160 °C and 210 °C, with other temperatures allowed if reported. For blends, the temperature should suit the fibre with the lowest heat resistance. Clauses 7.2 to 7.4 keep the pressing time at (15 ± 1) s for dry, damp and wet pressing. That gives users a defined contact time for comparing materials.

Reporting

Clause 8 lists the information to record: the standard reference, sample identification, procedure used, heating device and temperature, grey-scale ratings, test date, deviations and unusual features. This is the part most often used in quality records and test certificates.

What terms does EN ISO 105-X11:2026 define?

Dry pressing is pressing a dry test specimen with a heated device under specified time, temperature and pressure.

Damp pressing is pressing a dry specimen while a wet cotton adjacent fabric is placed on top of it.

Wet pressing is pressing a wet test specimen with a wet cotton adjacent fabric on top.

Cotton adjacent fabric is the cotton fabric placed next to the specimen so staining can be judged after pressing.

Grey scale is the visual reference used to rate change in colour and staining.

Standard atmosphere for testing textiles is the conditioning atmosphere used before assessment and, when required, before testing.

Who uses EN ISO 105-X11:2026?

EN ISO 105-X11:2026 is used by textile test laboratories, manufacturers, quality control and quality assurance teams, and buyers who need colour-fastness data for fabrics, yarns and loose fibres. It is relevant wherever ironing or hot-cylinder processing can affect the appearance of the textile.

What changed in EN ISO 105-X11:2026 from the previous edition?

EN ISO 105-X11:2026 supersedes EN ISO 105-X11:1996. The fifth edition cancels and replaces ISO 105-X11:1994, and the main technical change is updated pressing temperatures in 7.1.1: 120 °C, 160 °C and 210 °C instead of 110 °C, 150 °C and 200 °C, in line with ISO 3758:2023.

Which standards are used with EN ISO 105-X11:2026?

• ISO 105-A01:2010 - gives the general principles of testing and the conditioning/assessment step used for colour change after exposure.
• ISO 105-A02 - provides the grey scale for assessing change in colour.
• ISO 105-A03 - provides the grey scale for assessing staining.
• ISO 105-F02 - specifies the cotton and viscose adjacent fabrics, including the cotton adjacent fabric used here.
• ISO 139 - gives the standard atmospheres for conditioning and testing textiles.
• ISO 3696:1987 - specifies the grade 3 water used to wet the fabrics and specimens.
• ISO 105-P01:1993 - is referenced as a similar heating-device arrangement for dry heat testing.

What does the EN ISO 105-X11:2026 document contain?

The document contains the test principle, apparatus requirements, specimen preparation, the dry/damp/wet pressing procedures, the assessment method and the test report content. It also gives the required materials and the timing, pressure and temperature conditions used to run the test. The report section tells users what to document so results can be compared and traced later.

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
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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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