Test device including flow control means

Details Test device including flow control means Test device including flow control means

1992-03-24

1993-02-09

Johnston, Jill A.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 57, 422 58, 422 61, 422101, 436531, G01N 33546

Patent

active

051851270

ABSTRACT:
An assay device includes a filter stack in an enclosure having a base portion and a lid. The filter stack has a hydrophilic membrane having a binder for an analyte thereon, a hydrophobic membrane under the hydrophilic membrane and a pad of absorbent material under the hydrophobic membrane. The lid includes an upwardly extending rim which defines a recess having an insert therein. Aligned openings in the lid and insert provide access to the hydrophilic membrane. The hydrophobic membrane is impervious to the passage of an aqueous liquid until wetted by a wetting agent. The invention includes a kit of materials for performing an assay for an analyte which includes the device.

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Leary, et al. Proc. Natl. Acad. Sci. USA, vol. 80, (Jul.-83) pp. 4045-4049.
Bischoff, et al., Analytical Biochemistry, vol. 164 (1987) pp. 336-344.

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