Volumetric pumping apparatus and method for supplying fluids to sheath stream flow cells
US4695431A · kind A · utility
28Cited by
8References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Aug 16, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/117497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method are provided for the precisely controlled and coordinated supply of sample and sheath stream fluids to a sheath stream flow cell, and comprise the use of positive displacement differential pumping means which are operable to insure consistent sample and sheath stream fluid diameters, velocity and volume flow conditions within the flow cell, thereby maximizing the accuracy and reproducibility of successive analyses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.