Pipettes and a pipette actuating system

H:\m\intIeov enNRPrbl\DCC\MAS\7231712_l doex-12/8/2014 A pipette includes a dispensing piece and a separately formed and attached discrete bellows piece. The dispensing piece includes a dispensing end through which liquid enters 5 or leaves the interior of the dispensing portion and a connecting portion which receives a corresponding connection portion at the lower end of the bellows piece. The bellows piece includes a bellows portion having a plurality of circumferentially extending folds at intervals along the axis of the device. The bellows portion defines a closed end wall against which an axial force may be applied to compress the bellows portion. The bellows 10 portion does not extend the entire length of the bellows piece. The pipette is arranged such that liquid may enter not only the dispensing piece but also the lower part of the bellows piece in use. The folds of the bellows piece are arranged to avoid liquid being trapped in the folds when the bellows piece is compressed axially.