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METHOD AND SYSTEM FOR TRANSFERRING AND/OR CONCENTRATING A SAMPLE

  • US 20130000738A1
  • Filed: 02/28/2012
  • Published: 01/03/2013
  • Est. Priority Date: 02/28/2011
  • Status: Abandoned Application
First Claim
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1. A method of controlling the concentration of a sample flowing through a microchannel, the method comprising:

  • flowing a sample carrier fluid from a sample carrier channel and into an upstream portion of a microchannel such that the sample carrier fluid flows from the upstream portion and toward a downstream portion of the microchannel;

    flowing a sheathing fluid from a sheathing fluid channel and into the upstream portion of the microchannel such that the sheathing fluid flows from the upstream portion and toward the downstream portion of the microchannel, and generally parallel to the sample carrier fluid;

    detecting a concentration of a sample in the sample carrier fluid in the downstream portion of the microchannel;

    adjusting a flow rate of at least one of the sample carrier fluid and the sheathing fluid based upon the detected concentration of the sample.

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