Portable automated pipette for accurately pipetting and/or titrating liquids

摘要: A hand held self-contained automated pipette for portable operation having an electrically operated digital linear actuator. The actuator preferably includes a stepper motor driving rotor. threaded screw is coaxially positioned within the rotor and connected to shaft elongate grooves slidable in guide preventing rotation so that precise motion imparted shaft. pipetting displacement assembly one of various sizes removably attached actuation by common including programmed movement displacing piston cylinder optimize air interface volume, neutralize variations vacuum effects, provide accommodated stroke readout improved accuracy while and/or titrating different ranges volumes. Upon calibration undertakes immediate excursion end travel limit after slippage retracted home position. This position chosen optimum preservation volume between drawn liquid tailored with particularity being used. Multiple precision modes, pipetting, multiple dispensing, titration, dilution, measurement, are provided. Other features also disclosed.