Patent ID: 6532837
Filing Date: 2003-03-18
Classification: B01L

Abstract:
A pipette for use with a pipette tip to repeatedly aspirate and dispense a predetermined quantity of liquid comprising a hollow housing, the housing having first and second extremities, the second extremity being adapted to removably receive the pipette tip, an ejector carried by the housing and having a first extremity disposed within the first extremity of the housing and a second extremity movable vertically about the second extremity of the housing, the ejector movable from a first position for permitting the pipette tip to be securely mounted on the second extremity of the housing and a second position for pushing the pipette tip off of the second extremity of the housing, a spring carried within the housing, means carried by the housing for compressing the spring so as to store energy in the spring, locking means carried by the housing for retaining the spring in the compressed position and release means for releasing the locking means so that the ejector is driven by the spring to the second position to move the pipette tip distally on the second extremity of the housing.