at room temperature about 20 u00b0 c and all percentages are by weight and the following application and testing procedures were used a light blue dyed cut pile carpet constructed from 70 oz sq yd superba set bcf nylon 66 is treated in a laboratory beck apparatus for 20 minutes at 80 u00b0 c 176 u00b0 f at a 20 1 liquor to goods ratio with a solution of a stain resist agent described in one of the examples of ph of 2 0 and in the presence of 2 0 g per liter of magnesium sulfate to give an application load of 0 8 owf based on active ingredients the carpet was then rinsed under tap water partially de watered by squeezing and dried in an forced air oven for about 20 minutes at 121 u00b0 c 250 u00b0 f a commercially available latex composition textile rubber co calhoun ga was applied as to carpet backing adhesive with a secondary polypropylene backing under the trade name actionbac amoco atlanta ga a carpet specimen 3 u00d7 5 inch was placed on a flat non absorbent surface 20 ml surface 20 ml of a solution made from 45 g of cherry flavored sugar sweetened commercially available dilutable soft drink containing fd amp c red dye no 40 and 500 ml of water was poured into a 2 inch diameter cylinder which was tightly placed over the specimen the cylinder was removed after all the liquid had been.