SIST EN 20105-N01:1999

Textiles - Tests for colour fastness - Part N01: Colour fastness to bleaching: Hypochlorite (ISO 105-N01:1993)

This test method is mainly applicable to natural and regenrated cellulose materials. A specimen of the textile is agitated in a solution of sodium or lithium hypochlorite.

Textilien - Farbechtheitsprüfungen - Teil N01: Bleichechtheit von Färbungen: Hypochlorit (ISO 105-N01:1993)

Dieser Teil von ISO 105 enthält ein Prüfverfahren zur Bestimmung der Widerstandsfähigkeit der Farbe von Textilien in allen Verarbeitungßuständen gegen die Einwirkung von Natrium- oder Lithiumhypochloritbleichflotten in den in der gewerblichen Bleicherei üblichen Konzentrationen. Die Norm gilt hauptsächlich für natürliche und regenierte Zellulosefasern.

Textiles - Essais de solidité des teintures au blanchiment: Hypochlorite (ISO 105-N01:1993)

La présente partie de l'ISO 105 prescrit une méthode pour la détermination de la résistance des teintures sur les textiles de toute nature, à tous leurs stades de transformation, à l'action des bains de blanchiment contenant de l'hypochlorite de sodium ou de lithium en concentrations habituellement utilisées dans le blanchiment industriel. Elle est applicable principalement aux matériaux cellulosiques naturels et régénérés.

Tekstilije - Preskušanje barvne obstojnosti - Barvna obstojnost proti beljenju s hipokloritom

General Information

• Status: Published
• Publication Date: 28-Feb-1999
• ICS: 59.080.01 - Textiles in general
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-1999
• Due Date: 01-Mar-1999
• Completion Date: 01-Mar-1999
• Directive: 2007-01-4081 - Pravilnik o opremi in načinu uporabe opreme občinskih redarjev
• Ref Project: EN 20105-N01:1995 - Textiles - Tests for colour fastness - Part N01: Colour fastness to bleaching: Hypochlorite (ISO 105-N01:1993)

Overview

EN 20105-N01:1995 (identical with ISO 105‑N01:1993) specifies a laboratory test method for colour fastness to bleaching: hypochlorite. It defines how to determine the resistance of textile colours - mainly in natural and regenerated cellulose fibres - to bleaching baths containing sodium or lithium hypochlorite at concentrations used commercially. The method includes preparation of working hypochlorite solutions, specimen preparation, controlled exposure, neutralization/rinsing, and assessment of colour change using the ISO grey scale.

Key Topics and Requirements

• Scope and applicability: Primarily for natural and regenerated cellulose materials; applicable to textiles in all forms.
• Reagents and solutions:
  • Sodium hypochlorite working solution: prepared from commercial NaOCl diluted to ≈2 g available chlorine/L, buffered at pH 11 ± 0.2 with anhydrous sodium carbonate (10 g/L).
  • Lithium hypochlorite alternative: prepared from solid LiOCl to give ≈2 g available chlorine/L.
  • Hydrogen peroxide or sodium hydrogen sulfite solutions for post‑treatment reduction.
• Specimen size and mounting:
  • Fabric or knitted specimen: 40 mm × 100 mm (yarn or loose fibre guidance provided).
• Test conditions:
  • Liquor ratio: 50:1 (solution to specimen).
  • Temperature: 20 °C ± 2 °C.
  • Exposure time: 60 minutes (avoid direct sunlight).
  • Post‑treatment: thorough rinsing and agitation in specified reducing solution (e.g., hydrogen peroxide 2.5 ml/L or sodium hydrogen sulfite 5 g/L), then air dry ≤ 60 °C.
• Assessment:
  • Colour change assessed with the ISO grey scale (ISO 105‑A02).
• Safety: Warnings on handling hypochlorite and hydrogen peroxide solutions; prepare hypochlorite solutions immediately before use.
• Test report must include standard reference, sample identification and the numerical rating for colour change.

Applications and Users

• Quality control and certification of dyed textiles for resistance to household and industrial bleaching.
• Textile manufacturers, dyers and finishers validating dye chemistry and process robustness.
• Independent testing laboratories performing colour fastness testing.
• Product development and R&D teams selecting dyes or treatments for cellulose-based textiles.
• Procurement and compliance officers verifying suppliers meet specified fastness performance.

Related Standards

• ISO 105‑A01: General principles of testing (referenced)
• ISO 105‑A02: Grey scale for assessing change in colour (used for evaluation)
• ISO 105‑C01: Colour fastness to washing (related methodology)
• EN 20105 series / ISO 105 series: other colour fastness parts

Keywords: EN 20105‑N01:1995, ISO 105‑N01:1993, colour fastness to bleaching, hypochlorite, sodium hypochlorite, lithium hypochlorite, textile testing, cellulose fibres, grey scale, colour fastness testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-1999
Tekstilije - Preskušanje barvne obstojnosti - Barvna obstojnost proti beljenju s
hipokloritom
Textiles - Tests for colour fastness - Part N01: Colour fastness to bleaching: Hypochlorite
(ISO 105-N01:1993)
Textilien - Farbechtheitsprüfungen - Teil N01: Bleichechtheit von Färbungen: Hypochlorit
(ISO 105-N01:1993)
Textiles - Essais de solidité des teintures au blanchiment: Hypochlorite (ISO 105-
N01:1993)
Ta slovenski standard je istoveten z: EN 20105-N01:1995
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 105-NO1
Second edition
1993-10-01
Textiles - Tests for colour fastness -
Part NOI:
Colour fastness to bleaching: Hypochlorite
Textiles - Essais de soliditk des teintures -
Partie NO7: Solidite des teintures au blanchiment: Hypochlorite
Reference number
ISO 105-N01:1993(E)
ISO 105-N01:1993(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. Esch 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
(1 EC) on all matters of electrotechnical standardization.
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.
International Standard ISO 105-NO1 was prepared by Technical Committee
lSO/TC 38, Textiles, Sub-Committee SC 1, Tests for coloured textiles and
colorants.
This second edition cancels and replaces the first edition (included in
ISO 105-N:1978), of which it constitutes a minor revision.
ISO 105 was previously published in thirteen “Parts”, each designated by
a letter (e.g. “Part A”), with publication dates between 1978 and 1985.
Esch part contained a series of “sections”, each designated by the re-
spective part letter and by a two-digit serial number (e.g. “Section AO1 “).
These sections are now being republished as separate documents, them-
selves designated “Parts” but retaining their earlier alphanumeric desig-
nations. A complete list of these Parts is given in ISO 105-AOI.
0 ISO 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii
INTERNATIONAL STANDARD ISO 1059N01:1993(E)
Textiles - Tests for colour fastness -
Part NOI:
Colour fastness to bleaching: Hypochlorite
tated in a hydrogen peroxide Solution or sodium hy-
1 Scope
drogen sulfite Solution, rinsed and dried. The Change
in colour is assessed with the grey scale.
This part of ISO 105 specifies a method for deter-
mining the resistance of the colour of textiles of all
kinds and in all forms to the action of bleaching baths
containing sodium or lithium hypochlorite in concen-
4 Apparatus and reagents
trations normally used in commercial bleaching. lt is
applicable mainly to natura1 and regenerated cellulose
4.1 Glass or glazed-porcelain Container, which
materials.
tan be closed, for specimen and bleaching Solution.
2 Normative references
4.2 Hypochlorite solutions.
The following Standards contain provisions which,
Use one of the two solutions specified in 4.2.1 and
through reference in this text, constitute provisions
4.2.2.
of this part of ISO 105. At the time of publication, the
editions indicated were valid. All Standards are subject
to revision, and Parties to agreements based on this
4.2.1 Sodium hypochlorite (NaOCI) Solution, con-
part of ISO 105 are encouraged to investigate the
taining approximately 2 g of available chlorine per litre,
possibility of applying the most recent editions of the
buffered at pH 11 + 0,2 with 1
...