Patent ID: 6074611
Filing Date: 2000-06-13
Classification: B01L

Abstract:
A pipettor operable by a lateral pushing movement of a thumb of a user, comprising:a non-tubular body having an operating surface and a supporting surface, said body configured to be grasped between the thumb placed on said operating surface and at least one finger placed on said supporting surface in an opposing manner, said body defining an air channel having an end open to the exterior of said body;a tip holder coupled to said body at said end of said air channel, wherein an end of said tip holder remote from said body is configured to mate with a pipette tip;a pick-up poppet disposed on said operating surface of said body, wherein deflection of said pick-up poppet by the lateral pushing movement of the thumb displaces a first volume of air in said air channel so that, upon release of said pick-up poppet, a calibrated volume of fluid is drawn into the pipette tip; anda dispense poppet disposed on said operating surface of said body, wherein deflection of said dispense poppet by the lateral pushing movement of the thumb displaces a second volume of air in said air channel greater than said first volume of air so that the calibrated volume of fluid is dispensed from the pipette tip.