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

SIST EN ISO 105-X11:2026 is the Slovenian adoption of ISO 105-X11:2026 for textiles. It specifies a laboratory method for checking how textile colour resists hot pressing, including ironing and processing on hot cylinders, for textiles of all kinds and in all forms. The method is used by laboratories, manufacturers, and quality teams that need to compare dry, damp, or wet pressing performance against the intended end use.

What does SIST EN ISO 105-X11:2026 specify?

SIST EN ISO 105-X11:2026 specifies one test method for colour fastness to hot pressing. It applies to textiles in fabric, yarn, or loose-fibre form, and it covers dry, damp, and wet pressing according to how the product is meant to be used.

Clause	What it covers
1	Scope
2	Normative references
3	Terms and definitions
4	Principle
5	Apparatus
6	Test specimen
7	Procedure
8	Test report
Bibliography	Related literature

Clause 4 explains the test principle, clause 5 lists the equipment, clause 6 sets specimen preparation, clause 7 gives the procedure, and clause 8 defines what has to be reported.

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

Pressing conditions

The standard gives three common pressing temperatures: 120 °C, 160 °C and 210 °C, each with a tolerance of ± 2 °C. For blends, the chosen temperature should suit the fibre with the lowest heat resistance. In practice, that means the test should reflect the weakest fibre in the product, and any other temperature used must be recorded in the report.

The pressing time is fixed at (15 ± 1) s in each of the three procedures. That makes results easier to compare between laboratories.

Dry, damp and wet procedures

Clause 4 and Clause 7 define three cases: dry pressing, damp pressing and wet pressing. Dry pressing uses a dry specimen; damp pressing adds a wet cotton adjacent fabric on top; wet pressing uses a wet specimen and a wet adjacent fabric.

This matters because the method is matched to the textile’s end use. A product that will be pressed while damp or wet needs to be checked under those same conditions.

Apparatus and pressure

Clause 5 requires a heating device with smooth parallel plates and a pressure of 4 kPa ± 1 kPa. Heat is intended to come from the upper side only, and the lower side is insulated. A household iron may be used if its temperature and pressure are checked, but the report must state that a hand iron was used.

For practice, this means the setup must be controlled closely enough to give repeatable contact and heating. If the apparatus differs, the result may still be usable, but only if the deviation is documented.

Specimens and materials

Clause 6 gives specimen sizes and preparation rules. Fabric specimens are 40 mm × 100 mm. Yarn is either knitted into fabric or wound closely on an inert support, and loose fibre is formed into a sheet and supported on cotton adjacent fabric.

The method also calls for cotton adjacent fabric, grey scales for change in colour and staining, and Grade 3 water. These materials are what make the assessment comparable from one test to another.

Assessment and reporting

Clause 4.4 and Clause 7.5 require assessment of both colour change and staining by comparison with the grey scales. The colour change is checked immediately and again after at least 4 h in the standard atmosphere for textiles.

Clause 8 requires the report to identify the standard, the sample, the procedure used, the heating device and temperature, the grey scale ratings, the test date, any deviations, and any unusual observations. That gives the reader enough information to judge the result in context.

Who uses SIST EN ISO 105-X11:2026?

Textile testing laboratories use SIST EN ISO 105-X11:2026 to measure colour fastness after hot pressing. Manufacturers and finishing operations use it to check products before release, especially where ironing or hot cylinder processing matters.

Quality managers, suppliers, and buyers use the method when they need a common basis for specification, incoming inspection, or product comparison. It is relevant across textiles in general, including fabrics, yarns, and loose fibres.

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

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

The European Committee for Standardization (CEN) approved the ISO text without modification.

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

• ISO 105-A01:2010 - general principles of colour fastness testing and the conditioning approach used for assessment.
• ISO 105-A02 - grey scale for assessing change in colour.
• ISO 105-A03 - grey scale for assessing staining.
• ISO 105-F02 - specification for the cotton and viscose adjacent fabric used in the test.
• ISO 139 - standard atmosphere for conditioning and testing textiles.
• ISO 3696:1987 - Grade 3 water for preparing damp and wet test conditions.

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

The document contains a clear test sequence: principle, apparatus, specimen preparation, procedure, assessment, and reporting. Clause 4 separates dry, damp, and wet pressing, while Clause 5 describes the heating device, insulation, padding, cotton cloth, adjacent fabric, grey scales, and water.

Clause 6 gives specimen preparation for fabric, yarn, and loose fibre, and Clause 7 gives the step-by-step pressing and assessment procedure. Clause 8 lists the information that must appear in the test report. The bibliography points to ISO 105-P01:1993 as a related dry-heat method excluding 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
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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
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ISO draws attention to the possibility that the implementation of this document may involve th
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