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Multilayered test device for detecting analytes in liquid test samples

  • US 4,522,786 A
  • Filed: 08/10/1983
  • Issued: 06/11/1985
  • Est. Priority Date: 08/10/1983
  • Status: Expired due to Term
First Claim
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1. In a multilayered test device for the assay of analytes in test liquids, said device comprising at least two liquid permeable functional layers superposed upon one another, said layers being in liquid communication, the improvement comprising:

  • a barrier layer separating said layers, said barrier layer comprising a chemically inert, liquid insoluble, foraminous septum, the foramina of which are filled with a thermally sensitive material which is liquid impermeable at assay temperature, but capable of melting when heated, thereby providing rapid liquid communication between said functional layers.

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