Devices for use in chemical test procedures
US4978503A · kind A · utility
171Cited by
7References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1988 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Sep 6, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A specifically-reactive sample-collecting and testing device possessing a cavity or cavities each having a dimension small enough to enable sample liquid to be drawn into the cavity by capillary action, wherein a surface of the cavity carries an immobilized reagent appropriate to the test to be carried out in the device, and wherein said surface is a surface of a transparent solid plate to act as a light-transmissive waveguide and forming a wall of the cavity, said plate having an edge which is substantially optically smooth and transverse to the plane of the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.