Lower sealing means for chromatographic column
US4309286A · kind A · utility
22Cited by
6References
2Claims
0Family size
Inventors
Key dates
| Filing date | May 20, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | May 20, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/603
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved lower sealing means for a chromatographic column including a disc of phase separation paper transversely disposed within the column at its bottom portion and a flanged retaining ring in contact with the paper disc at its periphery and sealingly engaging the interior walls of the column. Preferably, both the column and the retaining ring are formed of polyolefin material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.