Variable flow rate injector
US6962658B2 · kind B2 · utility
10Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2003 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Feb 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A variable flow rate injector provides accurate, precise, and reproducible injection volumes that have low dispersion. The invention is particularly well-suited for HPLC injection volumes <500 nL but can be used to inject larger volumes and in different applications as well. Injections are performed at a first flow rate and separations are performed at a second flow rate. For improved HPLC system performance, the first flow rate is less than the second flow rate. The injector uses a variable flow rate fluid supply that allows rapid switching between flow rates desired for injection and flow rates desired for separations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.