Compact, low-profile chromatograph
US5804701A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Oct 22, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/8881
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analytical instrument includes a control system, including a computer and a pneumatic controller responsive to the computer, and a planar chromatographic assembly. The planar chromatographic assembly includes a planar pneumatic manifold, a heater/fan assembly for establishing a temperature-controlled zone, an insulating enclosure for confining the temperature-controlled zone to an oven cavity and certain zones of the planar pneumatic manifold, a separation column having inlet and outlet ends attached to couplers at selected internal fluid-bearing conduits in the pneumatic manifold and located closely adjacent the planar manifold and within the temperature-controlled zone, and one or more fluid-handling functional devices attached to the pneumatic manifold for fluid-tight communication with respective internal etched channels provided within in the planar pneumatic manifold. The fluid-handling functional devices may be surface-mounted or edge-mounted to certain ones of the etched channels in the planar pneumatic manifold. The fluid-handling functional devices may include: a) passive devices such as an injector section, a fluid coupler, or a vent for coupling a fluid stream to or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.