Nalge Nunc International Corporation

Daniel J Dwyer

John M Staton

Described are pipettes capable of dispensing both high volumes of liquid and highly accurate smaller volumes of liquid wherein the accuracy of the volume of liquid delivered increases along the length of the pipette. Embodiments of the pipette include an elongated body with an outer surface, an inner surface defining a lumen within the elongated body, a proximal orifice at a proximal end, a distal orifice at a distal end. The intermediate portion includes a first generally frustoconical-shaped portion defined by a first inner diameter proximate the proximal end of the elongated body and a second inner diameter proximate a second end thereof. In an embodiment, the intermediate portion includes a second generally frustoconical-shaped portion defined by a third inner diameter proximate the transition to the first portion and a fourth inner diameter adjacent the distal end of the elongated body.

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Macedon, NY, United States of America

Daniel J Dwyer