Pipette tip for an automated pipetting device and production method thereof
AssigneeTecan Trading AG
InventorPhilipp Ott
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AssigneeTecan Trading AG
InventorPhilipp Ott
Estimating the term…
The present invention relates to pipette tips for connecting to a pipette tube of a pipetting device that is used for taking up and dispensing fluids. A pipette tip is shaped as a long tube that forms a pipette body with an opening on one of its ends and the other end is designed to connect to the pipette tube. The pipette tip is characterised in that it has an electrode as a volume measuring electrode of a measuring capacitor. The present invention further relates to pipetting devices with a pipette tip, methods for determining the volume of a fluid sample in such a pipette tip, methods for recognising such a pipette tip on a pipetting device, methods for producing such a pipette tip, uses for such a pipette tip and a set of pipette tips.
Pipette tip (1) for connection to a pipette tube (2) of a pipetting device (3), wherein the pipette tip (1) comprises an elongated tube, which forms a pipette body (4), which has at its one first end an opening (5) for aspirating and/or dispensing liquids (6), and is formed at its other end for connection to the pipette tube (2), wherein the pipette tip (1) further comprises a first electrode (7) as a volume measuring electrode of a measuring capacitor, which further comprises at least a part of a sample liquid receivable in the pipette tip as a counter electrode, and wherein the first electrode (7) is in the form of a strip, extends axially along the pipette tip (7), and sectionally has different widths, wherein the first electrode (7) has a stepped width profile in the axial direction, wherein the width of the first electrode (7) is smallest at the first end and the width becomes greater in steps in the axial direction, and wherein the pipette tip (1) further comprises a second electrode (10) as an immersion detection electrode, wherein the second electrode (10) extends up to the opening (5) at the first end.
Dependencies are inferred from the claim text.