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Flow detection apparatus and method

  • US 6,103,196 A
  • Filed: 04/01/1998
  • Issued: 08/15/2000
  • Est. Priority Date: 12/27/1995
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a cartridge comprising a base having a fluid passageway, a pressure chamber connected to one end of the fluid passageway, and a sample port at another end of the passageway; and

    a fluid sample tester comprising;

    means for inducing pressure changes in the pressure chamber of the cartridge, wherein sample applied through the sample port will enter the passageway and will be translated within the passageway by pressure changes in the pressure chamber; and

    means for continuously monitoring the boundary layer positioning within the passageway wherein the position of a boundary of the sample within the passageway may be continuously monitored over time.

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