Magnetic stirring apparatus having low rotational speeds

Details Magnetic stirring apparatus having low rotational speeds Magnetic stirring apparatus having low rotational speeds

2005-11-08

2005-11-08

Soohoo, Tony G. (Department: 1723)

Agitating

Stirrer within stationary mixing chamber

Magnetic stirrer

Reexamination Certificate

active

06962433

ABSTRACT:
A magnetic stirring apparatus for achieving low rotational speeds is provided. The apparatus including a base for supporting a vessel containing a magnetic stir bar and a liquid to be stirred; a magnetic field generator for generating a rotating magnetic field to rotate the stir bar about an axis, the magnetic field generator including a plurality of coil pairs formed substantially in a circular manner, each coil of each pair being located diametrically opposite the other coil of the pair; a plurality of wedge-shaped tabs, each tab being coupled to a coil by a core, the wedge-shaped tabs forming a substantially circular plate; and a sine wave current generator for exciting each of the plurality of coil pairs by a predetermined phase shift resulting in the rotating magnetic field traveling along a circumference of the circular plate.

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