Programmable pipet apparatus
US5090255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Mar 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2300/027
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of automatically filling a pipet tube with a desired fill of liquid and automatically dispensing desired aliquots of liquid successively into wells in a tray or the like, comprises the steps of providing a syringe having a piston in a cylinder with the top of the cylinder connecrted to the top of a pipet tube by a flexible hose, moving the piston to its home position at the top of its travel in the cylinder and dispensing any liquid from the pipet tube, signalling a controller that the piston is in its home position and recording that information in the memory of the controller, drawing liquid into the pipet tube to a desired fill volume, signalling the controller that the desired fill volume has been reached and recording that fill volume in the memory of the controller, dispensing a desired aliquot of liquid from the pipet tube, signalling the controller that a desired aliquot has been dispensed from the pipet tube and recording the size of the dispensed aliquot in the memory of the controller, automatically dispensing successive aliquots of liquid from the pipet tube, automatically filling the pipet tube to the desired fill volume, and automatically dispensing successiv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.