Patent ID: 7833625
Filing Date: 2010-11-16
Classification: B01D,B01J,C07K,G01N,Y10T

Abstract:
1. A particle for use in isolating components from a mixture on the basis of isoelectric point, said particle comprising: (a) a porous particle body having a plurality of cavities extending inwardly from the surface thereof, wherein said porous particle body comprises a base material that produces a first electroendoosmotic force; (b) a passivating layer coating said porous particle body, wherein said passivating layer produces a second electroendoosmotic force, and wherein said second electroendoosmotic force is equal and opposite to said first electroendoosmotic force, such that said coated porous particle body thereby produces zero electroendoosmotic force; (c) a substance deposited within said plurality of cavities, wherein said substance has a predetermined isoelectric point and thereby provides said particle with a predetermined isoelectric value.