The positive-displacement pipettes provide the highest precision when pipetting viscous, non-aqueous liquids such as oils, blood and glycerol. Only the disposable piston within the capillary piston tip is in direct contact with the liquid, preventing contamination and protecting the sample, the user and the pipette. Easily eject the capillary piston tip by pressing the push button and avoiding any contact with the disposable capillary piston. The volume control switch allows easy volume adjustment and minimises the risk of accidentally changing the volume during pipetting tasks.