Chemistry: analytical and immunological testing – Optical result – With reagent in absorbent or bibulous substrate
Patent
1998-08-04
2000-10-10
Alexander, Lyle A.
Chemistry: analytical and immunological testing
Optical result
With reagent in absorbent or bibulous substrate
436178, 422 58, 422 61, G01N 3348
Patent
active
061300977
ABSTRACT:
A process for detecting dust-associated substances wherein the dust to be analyzed is brought together with a solvent for eluting the substance to be detected from the dust. The particulate components are retained by means of a filter matrix while the solvent and the substances dissolved and/or suspended therein are transported through the filter matrix by capillary liquid transport. The solvent and the substances dissolved and/or suspended therein are transferred into a reaction matrix adjoining the filter matrix by capillary liquid transport. The substance to be detected is detected in the reaction matrix by means of a chemical and/or biochemical reaction or by the failure of a chemical and/or biochemical reaction to take place. A device for detecting dust-associated substances preferably contains, besides the filter matrix and the reaction matrix, a container for receiving the dust to be analyzed, wherein the container is in liquid connection with the filter matrix.
REFERENCES:
patent: 4806490 (1989-02-01), Bischoff et al.
patent: 4977095 (1990-12-01), Zaromb
Mahn Jessica
Polzius Rainer
Wuske Thomas
Alexander Lyle A.
Drager Sicherheitstechnik GmbH
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