IS/ISO 105 : PART C09 : 2001 : Textiles Tests for Colour Fasteness : Part C09 Colour Fastness to Domestic and Commercial Laundering Oxidative Bleach Response Using a Non-Phosphate Reference Detergent Incorporating a Low Temperature Bleach Activator

NATIONAL FOREWORD

This Indian Standard (Part C09) which is identical with ISO 105-C09 : 2001 Textiles - Tests for colour fastness - Part C09: Colour fastness to domestic and commercial laundering - Oxidative bleach response using a non-phosphate reference detergent incorporating a low temperature bleach activator' issued by the International Organ ization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Chemical Methods of Test Sectional Committee and approval of the Texti le Division Council.

Colour fastness of dyed/printed textile materials to various agencies during the ir further treatment or actual use is an important performance requirement from the viewpoint of the user or consumer. The various agencies to which text ile materials may be subsequently subjected may include water, acids, alkalis, organic solvents, washing , laundering, drycleaning , perspiration, light, gaseous fumes, bleaching, rubbing, carbonizing, felting , etc and the colour of textile materials should be fast to these agencies and should not change considerably. The colour should also not bleed and stain the adjacent fabrics which are subjected to these agencies along with coloured fabrics. The colour fastness property of coloured textiles is, therefore, measured in terms of colour fastness ratings with respect to change in colour and/or staining of adjacent fabrics.

Since colour fastness is one of the most important requirement for export of textiles, it is considered essential that Indian Standards related to colour fastness are completely harmonized with International Standards. The various Indian Standards on colour fastness testing, are , therefore, being revised to align them with the corresponding International Standards and are being published in Parts A to Z.

The test method specified in this part are intended to reflect the effect of multicycle laundering using an activated bleach detergent by domest ic or commercial laundering procedures. The washes are carried out in a similar manner to the ISO 105-C06 tests using an activated oxygen bleach and reference detergent at 60'C. .

The text of ISO St~ndard has been approved as suitable for publ ication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the follow inq;

a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard '.

b) Comma (,) has been used as a decimal marker in the International Standards, while in Indian Standards , the current practice is to use a point (.) as the decimal marker.