Nine independently controlled fill and empty speed range options for liquids of varying viscosities. Fill and dispense both have fast, medium and slow settings. Can be used with glass and plastic serological pipets, 1 to 100mL. Provides over eight hours of continuous pipetting without recharging. Easy access battery compartment. Locking tissue culture nosepiece filters unwanted contaminants. Supplied with recharger for 110V plus four replacement filters. Size: 5.5"; weight: 7.5. Power requirements: standard Ni-MH battery. Color nosepieces available to aid in identifying Pipet-Aids by location, function, department or individual user.