Bsi bs en 20105 a03 1995 (1999) iso 105 a03 1993

00414375 PDF BRITISH STANDARD BS EN 20105 A03 1995 ISO 105 A03 1993 Textiles — Tests for colour fastness — Part A03 Grey scale for assessing staining The European Standard EN 20105 A03 1994 has the st[.]

ISO 105-A03: 1993

Textiles — Tests for

colour fastness —

Part A03: Grey scale for assessing

staining

The European Standard EN 20105-A03:1994 has the status of a

British Standard

UDC 677.016.47:677.016.41:535.653

BS EN 20105-A03:1995

This British Standard, having

been prepared under the

direction of the Textiles and

Clothing Standards Policy

Committee, was published

under the authority of the

Standards Board and comes

into effect on

15 January 1995

© BSI 03-1999

First published January 1993

Second edition January 1995

The following BSI references

relate to the work on this

standard:

Committee reference TCM/25

Special announcement in

BSI News March 1994

ISBN 0 580 23144 5

Cooperating organizations

The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries:

Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standard

Finland Suomen Standardisoimisliito, r.y

France Association française de normalisation Germany Deutsches Institut für Normung e.V

Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland

Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portuguès da Qualidade Spain Asociación Española de Normalización y Certificación Sweden Standardiseringskommissionen i Sverige

Switzerland Association suisse de normalisation United Kingdom British Standards Institution

Amendments issued since publication

Amd No Date Comments

© BSI 03-1999 i

Contents

Page

National annex NA (informative) Committees responsible Inside back cover

BS EN 20105-A03:1995

National foreword

This British Standard has been prepared under the direction of the Textiles and Clothing Standards Policy Committee It is the English language version of

EN 20105-A03:1994 Textiles — Tests for colour fastness — Part A03: Grey scale

for assessing staining, published by the European Committee for Standardization (CEN), which is identical with ISO 105-A03:1993, published by the International Organization for Standardization (ISO) It supersedes BS EN 20105-A03:1993, which is withdrawn

The technical content of this British Standard is identical with that of the

corresponding method formerly published in BS 1006:1990 Methods of test for

colour fastness of textiles and leather

A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application

Compliance with a British Standard does not of itself confer immunity from legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 4, an inside back cover and a back cover

This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover

EUROPÄISCHE NORM August 1994

UDC 677.016.47:677.016.41:535.653 Supersedes EN 20105-A03:1992 Descriptors: Textiles, dyes, tests, determination, colour fastness, grey scale, staining of colour

English version

Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining

(ISO 105-A03:1993)

Textiles — Essais de solidité des teintures —

Partie A03: Echelle de gris pour l’ évaluation

des dégorgements

(ISO 105-A03:1993)

Textilien — Farbechtheitsprüfung — Teil A03: Graumaßstab zur Bewertung des Anblutens

(ISO 105-A03:1993)

This European Standard was approved by CEN on 1994-08-09 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 Central Secretariat 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

Central Secretariat has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium,

Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,

Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and

United Kingdom

CEN

European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

© 1994 Copyright reserved to CEN members

Ref No EN 20105-A03:1994 E

EN 20105-A03:1994

© BSI 03-1999

2

Foreword

This European Standard has been taken over by

CEN/TC 248, Textiles and textile products, from the

work of ISO/TC 38, Textiles, of the International

Organization for Standardization (ISO)

The content of this European Standard is identical

to the International Standard ISO 105-A03

Textiles — Tests for colour fastness —

Part A03: Grey scale for assessing staining

from 1993

This European Standard shall be given the status of

a national standard, either by publication of an

indentical text or by endorsement, at the latest by

February 1995, and conflicting national standards

shall be withdrawn at the latest by February 1995

This European Standard supersedes

EN 20105-A03:1992

In accordance with the common CEN/CENELEC

Rules, the following countries are bound to

implement this European Standard: Austria,

Belgium, Denmark, Finland, France, Germany,

Greece, Iceland, Ireland, Italy, Luxembourg,

Netherlands, Norway, Portugal, Spain, Sweden,

Switzerland and United Kingdom

© BSI 03-1999 3

1 Scope

This part of ISO 105 describes the grey scale for

determining staining of adjacent fabrics in colour

fastness tests, and its use A precise colorimetric

specification of the scale is given as a permanent

record against which newly prepared working

standards and standards that may have changed

can be compared

2 Principle

2.1 The essential, or 5-step, scale consists of five

pairs of non-glossy grey or white colour chips (or

swatches of grey or white cloth), which illustrate the

perceived colour differences corresponding to

fastness ratings 5, 4, 3, 2 and 1 This essential scale

may be augmented by the provision of similar chips

or swatches illustrating the perceived colour

differences corresponding to the half-step fastness

ratings 4–5, 3–4, 2–3 and 1–2, such scales being

termed 9-step scales The first member of each pair

is white in colour and the second member of the pair

illustrating fastness rating 5 is identical with the

first member The second members of the remaining

pairs are increasingly darker in colour so that each

pair illustrates increasing contrasts or perceived

colour differences which are defined

colorimetrically The full colorimetric specification

is given below

2.2 The chips or swatches shall be white or neutral

grey in colour and shall be measured with a

spectrophotometer with the specular component

included The colorimetric data shall be calculated

using CIE 1964 supplementary standard

colorimetric system (10° observer data) for

illuminant D65

2.3 The Y tristimulus value of the first member

(white) of each pair shall be not less than 85

2.4 The second member of each pair shall be such

that the colour difference between it and the

adjacent first member is as follows:

(Bracketed values apply only to the 9-step scale.)

2.5 Use of the scale. Place a piece of the unstained, adjacent fabric (the original piece) and the piece which has been part of a composite specimen in a fastness test (the tested specimen) side by side in the same plane The surrounding field should be neutral grey colour approximately midway between that illustrating grade 1 and that illustrating grade 2 of the grey scale for assessing change in colour (this is approximately Munsell N5) If necessary to avoid effects of the backing on the appearance of the textiles, use two or more layers of the unstained undyed textile under both original and treated pieces Illuminate the surfaces with north sky light in the Northern hemisphere, south sky light in the Southern hemisphere, or an equivalent source with an illumination of 600 Ix or more The light should be incident upon the surfaces

at approximately 45°, and the direction of viewing approximately perpendicular to the plane of the surfaces Compare the visual difference between the original piece and the tested specimen with the differences represented by the grey scale

If the 5-step scale is used, the degree of staining of the tested specimen is that number of the grey scale which has a perceived colour difference equal in magnitude to the perceived colour difference between the original and the tested specimens; if the latter is judged to be nearer the imaginary contrast lying midway between two adjacent pairs than it is to either, the tested specimen is given an intermediate assessment, for example 4–5 or 2–3 A rating of 5 is given only when there is no perceived difference between the tested specimen and the original piece

If the 9-step scale is used, the degree of staining of the tested specimen is that number of the grey scale which has a perceived colour difference nearest in magnitude to the perceived colour difference between the original piece and the tested specimen

A rating of 5 is given only when there is no perceived difference between the tested specimen and the original piece

When a number of assessments have been made, it

is very useful to compare all the pairs of original and tested specimens which have been given the same numerical rating This gives a good indication of the consistency of the assessments, since any errors become prominent Pairs which do not appear to have the same degree of contrast as the remainder

of their groups should be re-checked against the grey scale and, if necessary, the rating should be changed

Fastness grade CIELAB difference Tolerance

4 blank

© BSI 03-1999

National annex NA (informative)

Committees responsible

The United Kingdom participation in the preparation of this European Standard was entrusted by the Textiles and Clothing Standards Policy Committee (TCM/-) to Technical Committee TCM/25, upon which the following bodies were represented

Association of Consulting Scientists

Association of Suppliers to the British Clothing Industry Limited

British Retail Consortium

British Textile Confederation

Chemical Industries Association

Home Laundering Consultative Council

International Wool Secretariat

Mail Order Traders’ Association

Ministry of Defence

National Wool Textile Export Corporation

SATRA Footwear Technology Centre

Soap and Detergent Industry Association

Society of Dyers and Colourists

Textile Finishers Association

Textile Research Council (FCRA)

Participation in the detailed technical work was undertaken by the Society of Dyers and Colourists

BS EN

20105-A03:

1995

ISO 105-A03:

1993

BSI

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