As application of ultrafiltration (UF) membrane to commercial plant has become popul ar, disparity of its performance becomes a matter of problem when it is used for fractio nation and concentration.
Size distribution of permeation place of UF membrane is in linear relati onship with log molecular weight when plotted by log probability paper and indicated it's characteristics by mean s of log molecular weight measured at 50% of retention value and its standard deviation. Furthermore, the data show that pressure drop of permeation path of module becomes important factor in case for UF membrane.
