System for dispensing microvolume quantities of liquids
US5927547A · kind A · utility
235Cited by
81References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low volume liquid handling system is described which includes a microdispenser employing a piezoelectric transducer attached to a glass capillary, a positive displacement pump for priming and aspirating liquid into the microdispenser, controlling the pressure of the liquid system, and washing the microdispenser between liquid transfers, and a pressure sensor to measure the liquid system pressure and produce a corresponding electrical signal. The pressure signal is used to verify and quantify the microvolume dispensed and is used to perform automated calibration and diagnostics on the microdispenser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.