Rayon whiteness is an important factor for scientists dealing in fabric quality. whiteness is affected by pulp quality and other processing variables. some of the variables include acid bath temperature, ◦c; cascade acid concentration, %; water temperature, ◦c; sulfide concentration, %; amount of chlorine bleach, lb/min; and blanket finish temperature, ◦c. a set of data from rayon specimens is given here. data provided in spreadsheet.