Abstract
The detergency has been evaluated mainly as the detergency against soils on the white cloth so far. However, there have arisen some cases in which the detergency has to be evaluated also against soils on the dyed cloth.
In the previous report, the authors have devised a gray scale exclusive for the evaluation of detergency conformed to the gray scale for color fastness as one of steps in evaluation of the detergency, tried its use in achromatic specimens and achieved effective results.
Accordingly, in this report, we have tried to apply that gray scale exclusive for evaluation on detergency as expanded to soils on the dyed cloth and then have deduced a calculated evaluation value ND#.
This ND* value in conformity with a grade value on the gray scale for color fastness can be converted to percent evaluation value which has been used so far and thus is regarded to be used effectively as a new value of evaluation on detergency well corresponding to one's visual sense.
