Pipette device

摘要

A pipette for use with disposable tips and having ejector and actuating devices for detaching the disposable tips from the pipette. The actuating device includes at least one cam element for interacting with the ejector, connected to the pipette body by a pivotal joint. The mechanism makes it possible to vary the torque conversion ratio of the cam element throughout the operation cycle of the actuator. It is particularly well suited for use with a multi-tip device in which the force required for tip ejection is larger than in single tip devices.