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Sterile or specific pathogen free environment products

  • US 5,858,793 A
  • Filed: 10/30/1996
  • Issued: 01/12/1999
  • Est. Priority Date: 11/05/1992
  • Status: Expired due to Fees
First Claim
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1. A method of testing a potentially infectious substance selected from the group consisting of blood, tissue, and other biological samples, said method comprising the steps of:

  • (a) placing the potentially infectious substance to be tested in a container of which at least a part of the container is formed of a semi-permeable membrane, the semi-permeable membrane having a molecular weight cut-off such that viruses and other potentially infectious organisms are retained within the container by virtue of having a molecular weight higher than the molecular weight cut-off;

    (b) closing the container; and

    (c) contacting the semi-permeable membrane with at least one reagent solution thereby allowing non-infectious components of said substance to pass through the membrane and react with the reagent solution, therefore allowing the test to be performed.

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