component included and specular component excluded a 3 cm viewing aperture was used the cie l colour co ordinate was taken for each stain on the stain monitors and these values were then averaged for each stain type it should be noted that higher l values are indicative of better cleaning the results are set out in table 2 as can be seen from table 2 the xeros plus multi dose cycle gave overwhelmingly superior cleaning to the xeros plus single dose cycle of the thirteen stain types tested ten showed superior cleaning with xeros plus multi dose in one case parity cleaning was observed with both cycles whilst only two demonstrated superior cleaning with xeros plus single dose analysis was then carried out on the stain monitor backing material for background whiteness and also on the sebum grease removal for stains 10 d and 20 d see table 1 to check the wavelength dependency of these across the visible spectrum 400 700 nm grease removal at low wash temperature is a key advantage of cleaning with polymeric beads and in particular when combined with this mulitcomponent dosing approach to detergency using the same spectrophotometer arrangement described above reflectance was measured as a function of visible wavelength to determine the colour strength values k s and these are shown in.