EP 1614469 B1 20070919 - Method and apparatus for dispensing a liquid with a pipetting needle
Title (en)
Method and apparatus for dispensing a liquid with a pipetting needle
Title (de)
Verfahren und Vorrichtung zur Ausgabe von Flüssigkeiten mit einem Pipettiernadel
Title (fr)
Méthode et dispositif pour distribuer un liquide avec une aiguille de pipette
Publication
Application
Priority
- EP 04076436 A 20040514
- EP 05075977 A 20050425
Abstract (en)
[origin: EP1614469A2] A method and a micropipetting apparatus for dispensing a liquid volume into a vessel by means of a pipetting needle and without any contact between said needle and a liquid contained in said vessel. The method comprises forming a drop (17) at the delivery tip (22) of the pipetting needle (11), said drop being retained at the tip by adhesion forces, and ejecting said drop (17) from said tip (22) by focusing at the tip of the pipetting needle (11) a mechanical excitation wave applied to an excitation point at some distance from said needle. The apparatus comprises a pipetting needle (11), an electromechanical transducer (32) mechanically connected with said pipetting needle (11), electrical signal generating means (33) for generating an excitation pulse (26) signal and for applying this signal to said electromechanical transducer (32) for mechanically exciting said pipetting needle (11) with a pulse of mechanical waves that propagate through said needle.
IPC 8 full level
B01L 3/02 (2006.01)
CPC (source: EP)
B01L 3/0234 (2013.01); B01L 2400/0433 (2013.01); B01L 2400/0496 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1614469 A2 20060111; EP 1614469 A3 20060322; EP 1614469 B1 20070919
DOCDB simple family (application)
EP 05075977 A 20050425