Levo is an easy to use graduated pipette controller for use with 1-100ml pipettes. Simply attach a graduated/serological pipette into the silicone holder and squeeze the bulb and you are ready to pipette. The thumb lever controls both the aspirate and dispense speed. A press of the central button blows-out any remaining drops in the pipette. An easily replaceable 3um hydrophobic filter prevents liquids from contaminating the inside of the Levo. 50ml of liquid can be pipetted from one squeeze of the bulb.