A pipette tip (30) for use in automated assay testing systems includes an annula r, protruding seal rings (78, 80) on the interior wall of the pipette for engaging sealing surfaces (114, 116) on a probe (100) to provide a resilient seal. The pipette tip also includes a positive stop (66) for assuring proper positioning and alignment of the pipette tip on the probe for facilitating mounting of the p ipette tip on the probe while minimizing variation in the loading and unloading forces required. Locator surfa ces (32, 48) are provided on the exterior of the pipette tip for precisely aligning the pipette tip in the system rack for positioning the pipette tip relative to the probe.

Title
Embout de pipette auto-alignable et auto-verrouillable
Pipette tip with self-aligning and self-sealing features
Publication Number
2122244
Application Date
October 29, 1992
Publication Date
May 13, 1993
Inventor
Pardinas Guillermo P
Agent
OGILVY RENAULT SENCRLSRL
Assignee
Abbott Laboratories
IPC
G01N 35/10
G01N 35/04
G01N 01/14
B01L 09/00
B01L 03/02
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