A tube for drinking liquids has two opposite ends, an inner wall, an outer wall, a central part provided with a bend formed as a sylphone and having a throughgoing opening extending between the outer wall and the inner wall of the tube, one of the opposite ends of the tube being closed, and a throughgoing opening being provided in one of the walls of the tube near the dosed opposite end of the tube.

An embodiment of the present disclosure provides a hand held pipette for aspirating and dispensing liquids including, a stirring device assembly, including a vibration inducing unit, a power source for the vibration inducing unit, and a control for the vibration inducing unit. Another embodiment of the present disclosure provides a microplate stirring device including, an orbital plate module having a proximal and distal side; at least one vibration inducing unit attached to the proximal side of said orbital plate module; and a base plate for receiving the microplate. Another embodiment of the present disclosure provides a liquid handling system used for aspirating and dispensing liquids including, a stirring module assembly. Another embodiment of the present disclosure provides a manual stirring device including, a vibration inducing unit; a power source for the vibration inducing unit; and a control for the vibration inducing unit.