Dye Fading in Laundry Washing Comparison of Washing Machine and Linitest Results

Abstract

Abstract Linitest and washing machine results have been compared for the assessment of dye damage/colour fading. 14 dyes of the AISE Monitor Dye Set for bleach induced dye fading were applied in several multi-cycle washes in both devices. It has been shown that dye fading in both applications correlated well with bleach containing detergents, although often the absolute level of fading was higher in a washing machine. Both systems identified the same dyes as being either problematic or safe. On the other hand experiments without a bleach system revealed that dye fading in a washing machine could be different from that generated in a Linitest.