Method of and apparatus for dispensing liquid
US4574850A · kind A · utility
38Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1985 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Jan 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid pipetting system for aspirating and dispensing small samples of fluid and diluents. The pipetting system consists of a coaxial needle serving as the pipette tip and a metering system to control the fluids. Precise dispensing of small amounts of liquid from the inner needle is made possible by surrounding the sample liquid with a miscible diluting liquid thereby establishing a controlled interface and conveying the sample liquid into the receiving chamber with that miscible diluting liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.