1、CEN EN*20105-A02 94 I 3404589 O086228 767 I BRITISH STANDARD Textiles - Test for colour fastness Part A02. Grey scale for assessing change in colour The European Standard EN 20105-A02 : 1994 has the status of a British Standard UDC 677.016.47 : 677.016.41 : 535.653 BS EN 20105-A02 : 1995 1993 IS0 10
2、5-A02 - CEN EN*20l105-A02 94 E 3404589 0086229 bT5 Amd. No. 15 January 1995 O BSI 1995 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 O 580 23143 7
3、BS EN 20105-AO2 : 1995 Date Ext affected 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 Belgium Denmark Finland France Germany
4、Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oesterreichisches Normungsinstitut Institut belge de normalisation Dansk Standard Suomen Standardisoimisliito, r. y. Association franaise de normalisation Deutsches Institut fr Normung e.V. He
5、llenic Organization for Standardization Technological Institute of Iceland National Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Esp
6、aola de Normalizacin y Certificacin Standardiseringskommissionen i Sverige Association suisse de normalisation British Standards Institution BS EN 20105-A02 : 1995 Contents Page Cooperating organizations Inside front cover National foreword i Foreword 2 Method 1 Scope 3 2 Principle 3 3 Describing co
7、lour changes in fastness tests 4 National annex NA (informative) Committees responsible Inside back cover National foreword This British Standard has been prepared under the direction of the Textiles and Clothing Standards Policy Committee and is the English language version of EN 20105-AO2 : 1994 l
8、kxtiles - Test for colour fastness - Part A02: Grey scale for assessing change in colour, published by the European Committee for Standardization (CEN), which is identical with IS0 105-AO2 : 1993, published by the International Organization for Standardization (ISO). It supersedes BS EN 20105-AO2 :
9、1993, which is withdrawn.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. Compliance with a British Standard does not of itself confer immunity from leg
10、al obligations. i CEN EN*20105-A02 94 3404589 0086231 253 = EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 20105-A02 August 1994 UDC 677.016.47 : 677.016.41 : 535.653 Supersedes EN 20105-A02 : 1992 Descriptors: Textiles, dyes, tests, determination, colour fastness, grey scale, colour differenc
11、es English version Textiles - Tests for colour fastness - Part A02 Grey scale for assessing change in colour (IS0 105-A02 : 1993) Textiles - Essais de solidit des teintures- Partie A02: Echelle de gris pour lvaluation des dgradations nderung der Farbe Textilien - Farbechtheitsprfungen - Teil A02: Gr
12、aumaBstab zur Bewertung der (IS0 105-A02 : 1993) (IS0 105-A02 1993) This European Standard was approved by CEN on 1994-08-09. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wi
13、thout 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
14、 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, It
15、aly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 0 1994 Copyright reserved to CEN members Re
16、f. No. EN 20105-A02 : 1994 E CEN EN*20105-A02 94 = 3404589 0086232 L9T = Page 2 EN 20105-A02 : 1994 Foreword This European Standard has been taken over by CEN/TC 248, Extiles and textile products, from the work of ISO/TC 38, Exiles of the International Organization for Standardization (ISO). The con
17、tent of this European Standard is identical to the International Standard IS0 105-A02 l if the latter is judged to be nearer the imaginary contrast lying midway be- tween two adjacent pairs than it is to either, the tested specimen is given an intermediate assess- ment, for example 4-5 or 2-3. A rat
18、ing of 5 is given only when there is no perceived difference between the tested specimen and the original material. 3 If the 9-step scale is used, the fastness rating of the specimen is that number of the grey scale which has a perceived colour difference nearest in magnitude to the perceived colour
19、 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 material. Grade 3 Loss in depth of colour only When a number of assessments have been made, it is very useful to compare all
20、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 be- come prominent. Pairs which do not appear to have the same degree of contrast as the remainder of their groups should b
21、e re-checked against the grey scale and, if necessary, the rating should be changed. Grade 3 Grade 3 Grade 3 Intermediate be- tween grades 4 and 5 3 Describing colour changes in fastness tests No significant loss in depth but colour redder Loss in depth and change in hue Loss in depth and change in
22、both hue and brightness No significant loss in depth but colour slightly redder 3.1 In using the grey scale, as outlined in 2.5, the character of the change in colour, whether in hue, depth, brightness or any combination of these, is not rated: the overall difference or contrast, between original an
23、d tested specimens, is the basis for the assessment. BI G R Y W Str D Br 3.2 If, as in rating dyes on textiles for example, it is desired to record the character of the change in colour of the textile in the test, appropriate qualitative terms may be added to the numerical rating, as illustrated by
24、the examples shown in table 1, Bluer B Greener V Redder R Yellower J Weaker C Stronger F Brighter Pu Duller T Table 1 - Examples of descriptions of change in character Meaning I I Rating 3 redder 3 weaker yellower 3 weaker bluer duller 4-5 redder 3.3 When changes in colour occur in two or three dire
25、ctions, it is considered neither feasible nor necessary to indicate the relative magnitude of each change. 3.4 When the space available for recording quali- tative terms is restricted, as on pattern cards, the ab- breviations shown in table2 may be used. Table 2 - Abbreviations of qualitative terms
26、Abbreviation I Meaning I French abbreviation CEN EN*20105-A02 94 I 3404589 0086235 7T7 I BS EN 20105-AO2 : 1995 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 Po
27、licy Committee (KM/-) 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 L
28、aundering 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 Res
29、earch Council (FCRA) Participation in the detailed technical work was undertaken by the Society of Dyers and Colourists. CEN EN*20105-A02 94 3404589 0086236 835 = BS EN 20105-AO2 : 1995 IS0 105-AO2 : 1993 BSI 389 Chiswick High Road London W4 4AL 9501- 4- 0.4k- JWD BSI - British Standards Institution
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