Patent ID: 8371743

Claim:
A method for suspending or re-suspending magnetically attractable particles comprising: Providing of at least one mixing vessel filled at least partially with a mixture comprising magnetically attractable particles which are at least partially precipitated at the bottom of the mixing vessel Providing of at least one mixing bar with a front end directed to the bottom of the mixing vessel, wherein the mixing bar has a magnetic field generating apparatus for the optional generation of a magnetic field at least in the front end area; Switching on an effective magnetic field acting at least in the front end area of the mixing bar by means of the magnetic field generating apparatus, while the mixing bar is immersed in the mixture; Moving away the magnetic field together with the mixing bar from a bottom of the mixing vessel with the movement of the magnetic field together with the mixing bar being such that at least a part of the magnetically attractable particles is raised from the bottom of the mixing vessel, and that a portion of particles sticking at the mixing bar is minimized; Switching off the magnetic field in a previously determined distance from the bottom which is greater than a distance from the bottom when switching on the magnetic field; Performing repeated mixing movements of the mixing bar without existence of a magnetic field switched on at the front end of the mixing bar in order to suspend or re-suspend, respectively, the magnetically attractable particles present in the mixture.