Zero-dilution split injector liner gas chromatography
US6494939B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Sep 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/127
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas chromatography split injector including a housing having a carrier gas inlet port and a vent port and an injector liner is provided. The injector liner includes a substantially cylindrical outer liner member disposed within the housing and an inner liner member disposed within the outer liner member. The inner liner member has substantially cylindrical upper and lower portions and a constriction therebetween. The constriction includes an inner surface having an inner diameter smaller than a diameter of inner surfaces of the upper and lower portions. The injector also includes a chromatographic column passing through the lower portion of the inner liner member and is in sealing engagement with the constriction of the inner liner member. A transfer line passing through the upper portion of the inner liner member and has an end located proximate to the constriction of the inner liner member. A sealing member is disposed between the outer liner member and the housing at a position between the carrier gas inlet port and the vent port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.