3.2.6. Effect of reuse number of the dye bath
Fig. 7 shows the effect of reuse number on the colour
strength obtained. It is clear that US reuse is more effective
than in the case of CH and as expected, repeating the reuse
of the dye bath always leads to different coloured samples
from one batch to another until complete exhaustion of the
dye bath.
Fastness properties of the US and CH dyed fabrics are
shown in Table 1. The results indicate fair to good fastness
properties of the dyed samples using both ultrasonic and conventional
techniques.