Volume metering capillary gap device for applying a liquid sample onto a reactive surface
US4761381A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Feb 26, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0688
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for controlling a liquid volume flowing onto a reactive surface which includes a sample application port, two systems of capillary channels, a reaction chamber, and an overflow chamber. The liquid sample to be analyzed is applied to the sample application port which gives the liquid entry to a capillary channel leading to the reaction chamber which contains a material capable of detecting the component of interest in the liquid. When the reaction chamber is filled, the remaining liquid will flow through another capillary channel to an overflow chamber. The capillary channel leading to the overflow chamber is controlled so that liquid cannot flow back into the reaction chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.