Each dyed sample at the optimum condition was washed three times with 5 l of tap water.
Colour measurement was carried out in CIELAB system 1976 using colour difference meter that follows the standardtest.
Then the dyed cotton fibres were tested for washing fastness (ISO 105-C01:1989 and ISO 105-C03:1989) and light fastness (ISO 105-B02:1994) by comparison to gray scale