Abstract: A pipette tip assembly is provided which includes one or more pipette tips, a tip support and a tip holder which is movable between a tip-holding and a tip-releasing position. The pipette tip assembly also includes a position-maintaining structure which is adapted to hold the tip holder in the tip-releasing position until the tip holder is selectively moved from that position. The position-maintaining structure thus eliminates or reduces the potential for inadvertent lifting of the tip holder relative to the assembly. The invention thus provides a pipette tip assembly that facilitates secure transport, minimal handling, and convenient and user-controlled operation.

Abstract: A pipette tip assembly is provided which includes one or more pipette tips, a tip support and a tip holder which is movable between a tip-holding and a tip-releasing position. Additionally, a pipette tip assembly is provided which includes one or more pipette tips and a tip holder which has tapered apertures therein. Methods of using such assemblies are further provided. The invention provides pipette tip assemblies that facilitate secure transport, minimal handling and convenient and user-controlled operation.