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Apparatus for separating a mixture

  • US 5,569,367 A
  • Filed: 01/27/1995
  • Issued: 10/29/1996
  • Est. Priority Date: 04/16/1992
  • Status: Expired due to Term
First Claim
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1. Apparatus for separating a mixture of particles by selective retardation of some of the particles comprising:

  • a chamber with an inlet and an outlet,means for providing an eluant flow between said inlet and said outlet,an electrode structure of at least two electrodes disposed within the chamber,means for applying an alternating voltage between the electrodes, said electrode structure being such that when energized in operation of the apparatus there is established in the eluant a spatially non-uniform alternating field, where particles caused to flow through the chamber in said eluant flow are carried past the electrode structure and are separated into fractions,wherein an auxiliary electrode structure is placed upstream of the main electrode structure, the auxiliary electrode structure being energized in use, such that substantially all the particles are collected into a relatively small volume.

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