| abstract |
Described herein are pipette tips that include rigid axial projections circumferentially disposed around the exterior surface of a relatively more compliant annular member. The rigid, axial projections may enable improved, and often optimal, sealing engagement with a dispensing device by (i) allowing deformation of the annular member between the projections, and (ii) restraining overall deformation of the annular member. Pipette tip embodiments described herein readily form a desired seal with a dispensing device, and permit ejection after use without modification to the dispensing device. |