Patent ID: 11931731
Assignee: TECAN TRADING AG
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 11:
12. An assembly comprising:
a pipette tip for aspirating and/or dispensing a liquid,
a pipette tip extension attached to the pipette tip, the pipette tip extension comprising:
a proximal end, a distal end, and an exterior wall extending between the proximal end and the distal end, the exterior wall having an outer side and an inner side and forming at the proximal end a reception aperture for inserting the pipette tip,
a bottom at the distal end,
an inner cavity enclosed by the inner side of the exterior wall and the bottom,

one or more distance elements for spacing apart the pipette tip from the attached pipette tip extension, the one or more distance elements being dimensioned to establish a fluid uptake area adjacent to the inner side of the exterior wall, the bottom and the inserted pipette tip, the fluid uptake area extending from the bottom up to the reception aperture and being in fluid connection with the surrounding atmosphere at the reception aperture,
a constriction element configured to control an insertion depth of a pipette tip within the pipette tip extension, the constriction element defining a gap height between a distal end of an inserted pipette tip and the distal end of the pipette tip extension, and
a coating for interacting with a fluid present in the fluid uptake area.