Saturday, December 28, 2013

Colorfastness of Textiles

Dyed textiles are exposed to a variety of treatments during subsequent manufacture steps and later is daily use. Standard test methods have been developed to evaluate the colorfastness. These test methods are maintained by the International Organization Standardization (ISO). The standard test methods are published as ISO standard 105. Change in color and staining of undyed adjacent fabric are assessed visually colorimetrically by comparison with a gray scale of dyed fabric.


The results are recorded on a numbered scale.

Fastness and colorfastness to weathering: 1 (poor) to 8 (optimum).

All other fastness tests: 1 (poor) to 5 (optimum).


The colorfastness tests are grouped according to different treatments of dyed textiles:

No ISO 105A- General
No ISO 105B- Colorfastness to light, weathering and photo-chromism.
No ISO 105C- Colorfastness to washing and laundering.
No ISO 105D- Colorfastness to dye cleaning.
No ISO 105E- Colorfastness to aqueous agencies.
No ISO 105G- Colorfastness to atmospheric contaminant.
No ISO 105N- Colorfastness to bleaching agencies
No ISO 105P- Colorfastness to heat treatments
No ISO 105S- Colorfastness to vulcanization
No ISO 105X- Colorfastness to miscellaneous agencies
No ISO 105Z- Colorfastness to colorant characteristics.

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