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Disposable sample card having a well with electrodes for testing a liquid sample

  • US 4,123,701 A
  • Filed: 07/01/1976
  • Issued: 10/31/1978
  • Est. Priority Date: 07/01/1976
  • Status: Expired due to Term
First Claim
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1. A sample card for electrically operating on a liquid sample, the card comprising:

  • a substantially planar base portion;

    a well portion extending out of said base portion so as to leave a substantially planar region completely surrounding said well portion;

    first electrode means in said well portion;

    second electrode means in said well portion, spaced and insulated from said first electrode means;

    first and second electrical leads electrically integral with said first and second electrode means, respectively, and connector means electrically integral with each of said first and second electrical leads, wherein said first electrode means is a button electrode located in the central region of said well portion; and

    wherein said second electrode means is a ring electrode extending substantially entirely around said first electrode means.

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