Pipetting device for an improved pulse-based pipetting of liquid
US11504708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | May 11, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0633
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipetting apparatus and method for pulsed dispensing of small metered-liquid doses of no more than 1 μl. The apparatus includes a pipetting conduit at least partly filled with working gas, a pressure-modifying apparatus for modifying the pressure of the working gas, and a control apparatus for applying control to the pressure-modifying apparatus. The control apparatus can control the pressure-modifying apparatus so as to generate in the pipetting conduit, with respect to a reference holding pressure in the pipetting conduit which is necessary for immovable holding of the metered-liquid quantity, an overpressure pulse having a pulse duration of no more than 40 ms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.