Textiles: fiber preparation
Patent
1975-01-07
1976-01-13
Shapiro, Lionel M.
Textiles: fiber preparation
C12K 110
Patent
active
039322238
ABSTRACT:
A culturing article according to which one part of a wick is placed in engagement with a body fluid in order to check for the presence of suspected microorganisms. An opposed part of the wick is maintained out of engagement with the body fluid, so that by capillary action the body fluid will progress along the wick from the one part toward the opposed part thereof. The progress of the body fluid from the one part toward the opposed part of the wick is limited to achieve a density gradient according to which the body fluid is most dense at the one part of the wick which engages the body fluid while the body fluid becomes gradually less dense from the one part toward the opposed part of the wick, to provide a density gradient. A culture medium engages the wick to encourage predetermined microorganisms to grow, and at a certain portion of the density gradient the microorganisms will be very clearly evident. The wick as well as the culture medium may be in the form of a roll which is encapsulated to be enclosed at all except the part of the wick which engages the body fluid, or the wick and culture medium may take the form of separate layers. The culture medium may have portions of different properties for encouraging different microorganisms to grow, so that it becomes possible to check simultaneously for the presence of different microorganisms.
REFERENCES:
patent: 3341427 (1967-09-01), Evans et al.
patent: 3367841 (1968-02-01), Buissiere et al.
Shapiro Lionel M.
Warden Robert J.
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