Flow tube for NMR probe
US5867026A · kind A · utility
15Cited by
7References
46Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/307
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A three-piece NMR detection cell comprises an inlet tube having a conically, tapered outlet nozzle, leading to an analysis tube, in turn leading to an outlet tube having a conically tapered inlet nozzle. The inlet and outlet tubes are inserted into the analysis tube at a distance from their inserted ends and sealed in a manner appropriate to their composition. When the detection cell is used in a coupled HPLC-NMR apparatus, increased NMR sensitivity and improved lineshape are obtained at low injection volumes while maintaining a low level of chromatographic band broadening and a high level of magnetic field homogeneity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.