level it should be noted that same amount of 60 u00b0 c water was added at the same stage during the wash cycle of the xeros plus single dose cycle but without any oxidising component or activator u2014 this having already been added at the start of the main wash as shown in table 1 the purpose of this additional heated water in the xeros plus single dose cycle therefore was to ensure an identical temperature profile throughout the washing process to that which applies in the xeros plus multi dose case up to the same final wash temperature of 28 u00b0 c hence the only difference between these two cycles was the means of detergent addition i e multidosing of components throughout the cycle versus single dosing of all components at the start of the main wash the overall cycle times of both cycles u2014 including wash bead separation and rinse u2014 were identical at 90 minutes a three rinse programme was used for both procedures with the optical brightener and perfume added in the final rinse for the xeros plus multi dose cycle as shown in table 1 the level of cleaning was assessed using colour measurement reflectance values of the wfk stain monitors were measured using a datacolor spectraflash sf600 spectrophotmeter interfaced to a personal computer employing a 10 u00b0 standard observer under illuminant d 65 with the uv component included.