Method, device and apparatus for the wet separation of magnetic microparticles
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United States of America Patent
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Jun 5, 2007
Grant Date -
Jun 10, 2004
app pub date -
Jun 17, 2002
filing date -
Jun 27, 2001
priority date (Note) -
Expired
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Abstract
Method for the wet dynamic separation of a suspension in liquid phase, comprising microparticles comprising a magnetic material and a liquid medium in which said microparticles are in suspension, in which method: a) the suspension is confined in a chamber having a volume defined by at least two dimensions, for example length and depth; b) at least one plurality of elementary magnetic fields is set up, these magnetic fields being distributed in a 'Halbach semi-configuration', whose respective ends facing the chamber generate a vector sum of said elementary magnetic fields, corresponding to a magnetic capture field passing through said chamber and exerting a magnetic attraction on the microparticles, and whose opposite respective ends generate no magnetic field; and c) said capture magnetic field is generated, whereby a solid phase enriched with microparticles is captured in said chamber, and a liquid phase depleted in microparticles is extracted from said chamber.
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