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Apparatus and method for thermally cycling samples of biological material with substantial temperature uniformity

  • US 7,005,617 B2
  • Filed: 10/23/2003
  • Issued: 02/28/2006
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Term
First Claim
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1. An apparatus for thermally cycling samples of biological material comprising:

  • a thermal block assembly including a plurality of sample holders for receiving samples of biological material;

    a heat sink located below the thermal block assembly and thermally coupled to the thermal block assembly to transfer heat away from the thermal block assembly;

    a first heat source located between the thermal block assembly and the heat sink, the first heat source thermally coupled to the thermal block assembly to heat the thermal block assembly; and

    a second heat source located below the first heat source, wherein the second heat source is radially outside the first heat source, the second heat source thermally coupled to the first heat source to heat at least a portion of the first heat source.

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