Headspace-sampling apparatus
US4351802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1980 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Sep 26, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a headspace-sampling apparatus and method, use is made of a sampling body which defines a sample chamber, first passage means extending from said chamber, means for connecting said passage means to the entry end of a chromatography column held in operative position in a gas chromatograph, second passage means extending to said chamber, and means for connecting a source of gas to said second passage means. When the first-named connection means is connected to the column, a gas flow can be established within the body from the second named connection means through the said chamber to the entry end of the column, whereby a headspace sample of said substance is swept directly from said chamber on to an entry end region of said column, the headspace sample being cumulatively trapped at said region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.