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Method for sample injection in microchannel device

  • US 5,900,130 A
  • Filed: 06/18/1997
  • Issued: 05/04/1999
  • Est. Priority Date: 06/18/1997
  • Status: Expired due to Term
First Claim
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1. A method for transporting a liquid sample containing at least one sample material into a third microchannel from an intersection of said third microchannel with at least a first, a second, and a fourth microchannel, comprising:

  • in a first stage, moving liquid sample in and from said fourth microchannel through said intersection and into said second microchannel and concurrently moving carrier liquid in and from said first microchannel and in and from said third microchannel through said intersection and into said second microchannel;

    thereafterin a second stage, moving at least part of the contents of said intersection into said third microchannel and concurrently moving a part of the contents of said second and fourth microchannels through said intersection and into said third microchannel, whereby a quantity of said sample material is moved into said third microchannel; and

    thereafterin a third stage, moving carrier liquid from said first microchannel simultaneously through said intersection and into said second, third, and fourth microchannels.

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