| 主权项 |
1. An apparatus constructed and arranged for mixing and separating magnetic particles in a liquid, the apparatus comprising:
a rotatable holder configured to hold a plurality of regularly spaced containers in a circular configuration in a horizontal plane; a plurality of containers, each container being capable of receiving liquid containing magnetic particles; a plurality of magnets disposed on a rotatable support and arranged relative to the containers so as to produce at least one magnetic field in each container, said magnets or said containers being rotatable between a first position and a second position so as to alternately subject opposite lateral sides of the container to magnetic field thereby changing the relative angular position of the magnets and the magnetic particles in the containers; a drive mechanism for rotating either the magnets or the containers in a repetitive motion between the first and second positions with a delay between such movements so as to stop the rotation at a first position for a first time interval before moving to the second position, and to stop the rotation at said second position for a second time interval before moving the magnets back to the first position; means for stopping the rotary motion so as to position a magnet on one lateral side of the container to separate the magnetic particles as a relatively compact mass. |
