1.1 This test method is designed to
evaluate the colorfastness to non-chlorine
bleach in home laundering of textiles
which are expected to withstand frequent
laundering. The fabric color changes resulting
from the powdered non-chlorine
bleach, detergent solution and abrasive
action of five home launderings are evaluated.
1.2 First establish the level of performance
with powdered non-chlorine
bleach and if an effect is found, then
retest with detergent alone. It may be
necessary to use a water only wash to
separate the effects of components like
hardness, pH or chlorine content.
1.3 Since the powdered non-chlorine
bleaches currently available contain ingredients
other than the powdered nonchlorine
bleach; such as fluorescent whitening
agents, bluing, etc., it is the total
effect of these chemicals on the color
change that is being evaluated