of the no 2 and no 4 filter papers to one gram of solid dye composition was added 250 milliliters of water and the solution was boiled for 15 minutes and then filtered through a tared whatman filter paper no 2 no 4 with vacuum the time for the filtration was recorded the filter paper was dried and this residue dye material remaining on the filter was calculated five grams of dispersant material 1 1 ratio of dispersant to fiber were taken into 200 milliliters of water and ph adjusted to u02dc 7 0 4 0 after heating to boiling condition a nylon skein was added and periodically turned for 15 minutes the fiber is then removed washed with tap water and dried reflectance was recorded with an instrument model 610 from the photovolt corporation in new york the machine should be allowed to warm up for at least three hours care should be practiced that the skein during measurements is stretched so that the individual strings are parallel to each other for higher accuracy each skein was aligned and measured five times then the average number was taken the practice of this invention may be better understood in the following examples this example illustrates the effect of epichlorohydrin blocking and cross linking on a sulfomethylated lignin several samples each.