Assay devices

Details Assay devices Assay devices

1998-02-17

2000-12-05

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 61, 436169, 436177, 436178, G01N 3348

Patent

active

061562718

ABSTRACT:
An assay device incorporates a composite strip comprising at least two bodies of porous liquid-conductive material in liquid-flow contact with each other via an interface and together defining at least part of a liquid flow path through which liquid must flow during the performance of an assay, wherein at said interface the lateral dimension, relative to the direction of the liquid flow path, of the contact area of the upstream body is narrowed such that liquid flow from the upstream body into the downstream body is focused towards the centre-line of the flow path in the downstream body, thereby reducing the likelihood that liquid will deviate from the intended flow path. The upstream body can be a sample-collecting wick, terminating at the interface as a point or prow (FIG. 7).

REFERENCES:
patent: 4790640 (1988-12-01), Nason
patent: 5467778 (1995-11-01), Catt et al.
patent: 5504013 (1996-04-01), Senior
patent: 5556789 (1996-09-01), Graw et al.
patent: 5622871 (1997-04-01), May

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