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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