Test device with novel control symbolism

Details Test device with novel control symbolism Test device with novel control symbolism

1991-02-28

1992-07-21

Lacey, David L.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 56, 422 57, 422 58, 422 59, 422 60, 422 61, 435288, 435293, 436169, 436809, G01N 3353, G01N 33543, G01N 33545, C12M 112

Patent

active

051320851

ABSTRACT:
There are described assay devices having a control surface on which controls are deposited to produce a representational symbol that preferably indicates a satisfactory test procedure, or a failure in the test procedure. In one aspect of the invention, the symbol comprises exclusively the positive control areas and the negative control area, so that the negative control area will convert the "satisfactory" symbolism into "unsatisfactory" symbolism. In another aspect, the symbols that are formed are "OK" and "OK", respectively.

REFERENCES:
patent: 4046513 (1977-09-01), Johnson
patent: 4073623 (1978-02-01), Bodart
patent: 4523852 (1985-06-01), Bauer
patent: 4877580 (1989-10-01), Aronowitz et al.
patent: 4916056 (1990-04-01), Brown, III et al.
patent: 4920046 (1990-04-01), McFarland et al.
patent: 4923800 (1990-05-01), Ly
patent: 4943522 (1990-07-01), Eisinger et al.

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