The Pipette Controller provides precise fluid control at your finger tips. Comfortable to hold and easy to use, the manual inline pipette controller was designed with an ergonomic grip and bulb for simple and precise operation. A T-bar thumb lever controls the aspirating and dispensing speeds from serological pipettes from 1 to 100 mL in size. Operation is simple: Squeeze the bulb to create a vacuum to draw up fluid. Push the control lever backward (upward) to aspirate liquid through a pipette, or push the lever forward (downward) to dispense the liquid. A press of the central bulb on the unit blows out any remaining fluid if necessary.