Patent ID: 7175813
Filing Date: 2007-02-13
Classification: B01L

Abstract:
1. A volume adjustable pipette ( 10 ; 10 ′; 10 ″) comprising a housing ( 12 ), a plunger ( 20 ) mounted for axial movement in the housing to and from a stop ( 32 s ; 32 s ′; 32 s ′) during aspiration of a fluid into and dispensing of the fluid from a tip extending from the housing, an axially moveable volume setting member ( 32 ; 32 ′; 32 ″) in the housing defining the stop ( 32 s ; 32 s ′; 32 s ′) for the plunger and a volume setting for the pipette, a turnable volume adjusting member ( 33 ; 33 ′; 33 ′) and volume adjusting means ( 22 ; 22 ′; 22 ″) for axially moving the volume setting member ( 32 ; 32 ′; 32 ″) in response to a turning of the volume adjusting member ( 33 ; 33 ′; 33 ′), characterized by: coarse volume setting means ( fine volume setting means ( one of the coarse and fine volume setting means ( means (