Method and apparatus for pipetting liquids
US4967606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Apr 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method for pipetting multiple aliquots of liquid employs a preliminary back sip prior the first expression of an aliquot of the liquid; an adjustable back sip between each expression of aliquots of liquid; and a blow out volume of air, aspirated into the pipette prior to the initial aspiration of liquid, for blowing out residual liquid after the expression of the last aliquot of liquid. The improved method for pipetting liquid may be performed on an improve apparatus which includes a microprocessor having within its memory a schedule or correlation for the optimal back sip to execute after the expression of any given aliquot. The microprocessor may also include means for driving the apparatus so as to perform the preliminary back sip and the aspiration of the blow out volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.