Researchers assessed the dyeability of various polyester/cotton blend woven fabrics, focusing on the effects of dyeing process (single bath versus double bath) and blend ratio (polyester/cotton ratios of 80:20, 67:33, 48:52, and 44:56). Tests employed Reactofix Purple HE BR reactive dye, and the samples were measured by a Spectronic 20D spectrophotometer. Dyeing started at room temperature, and sodium chloride was added as the dyebath temperature was raised. Set temperatures ranged from 50 to 100 degrees centigrade. Fixing times ranged from 20 to 80 minutes ISO Type Ⅲ tests assessed the washfastness of the dyed fabric samples. Activated charcoal decolored the exhausted dyebaths. Results showed that dye fixation improved as the set temperature approached 100 degrees centigrade. The washfastness of all samples was judged good to excellent. With all other system parameters held constant, longer fixing times correlated with improved dye uptake values. Acidifying the waste effluent improved the efficiencf the activated charcoal decolorization treatments. 8 refs.