Heating and cooling enclosure for a gas chromatographic column
US4096908A · kind A · utility
16Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1976 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Dec 15, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/3084
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The enclosure comprises an insulating and demountable sealed box unit fitted with a closure lid and placed around a chromatographic column consisting of a metal tube of constant cross-section, said tube being arranged in the form of a helix and supplied with electric heating current which is cut-off for cooling purposes. The heating and cooling air is supplied through a coaxial injection pipe and nozzle, circulated axially through and then around the column within the box unit, then discharged through the bottom wall of a collector casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.