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Spectrophotometric analytical cartridge

  • US 6,002,475 A
  • Filed: 01/28/1998
  • Issued: 12/14/1999
  • Est. Priority Date: 01/28/1998
  • Status: Expired due to Fees
First Claim
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1. An analytical cartridge adapted for use in spectrophotometric analysis, said cartridge comprising:

  • a housing comprising a cartridge body which has a top surface, bottom surface and outer walls defining a housing perimeter, said body further comprising an inner end and an outer end;

    a deposition well located in said cartridge body for receiving fluid to be analyzed, said deposition well having an inlet and an outlet;

    a test well located in said cartridge body, said test well comprising a cuvette and an inlet through which fluid can be introduced into said cuvette, wherein said test well inlet is located more towards said cartridge body inner end than the outlet from said deposition well;

    an overflow well located in said cartridge body, said overflow well having an inlet and an outlet, wherein said overflow well is located at a position which is more towards said outer end than said deposition well or said test well inlet;

    a first passageway which connects the deposition well outlet to the overflow well inlet;

    a second passageway which connects the deposition well outlet to the test well inlet wherein said first and second passageways are integral with each other at said deposition well outlet; and

    a pressurization device associated with said deposition well for pressurizing said deposition well to provide controlled movement of liquid through said second passageway.

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