FIELD: laboratory equipment. SUBSTANCE: axle is rigidly secured to the base. The rotor disk with the electric motor rotor is mounted on the axle for permitting rotation. The rotor disk is provided with symmetrically arranged sockets for vessels. The rotor of the electric motor is made up as an assemble of permanent magnets of alternative polarity. The top surfaces of the magnets are interconnected through a washer made of magnetic-soft material. The other washer made of magnetic-soft material underlies the bottom end face surface of the stator with a spaced relation and is connected with the top washer paramagnetic flange. EFFECT: enhanced efficiency.
