For all applications where gentle stirring is required, such as biological suspensions and micro-carrier cell cultures. The unique stirring action uses a flexible "PTFE" shaft driven through a fully encapsulated rare-earth magnet to give even and complete mixing throughout the liquid. The height of the shaft is adjustable. Contact materials are "PTFE" and borosilicate glass only. The glass vessel has two side-arms with "PTFE" caps and the base is intended to aid mixing. Recommended for use up to 120 rpm max.