Protective device for the chromatographic bed in dynamic axial compression chromatographic columns
US7132053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2002 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Apr 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/522
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention concerns a chromatographic device including a column (12) for receiving a chromatographic bed (14) through which flow a first fluid; a piston (36) sliding inside the column (12) an exerting pressure on the bed (14), a chamber (28) containing a second fluid exerting pressure on the piston (36); a regulator (52) for the pressure exerted by the piston (36) on the bed based on the pressure inside the chamber (28), on the flow pressure on the first fluid at the intake of the column (12) and on a reference pressure of the bed (14). Said device enables to separate at least two compounds to be subjected to chromatographic analysis, while adjusting the pressure exerted on the chromatographic bed. The device efficiently uses the chromatographic bed while protecting it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.