Method for producing size selected particles

A method for preparing specific sized particles, the method comprising:

• a. introducing reagent into a continuous stir reaction tank and allowing the reagents to react to produce product liquor containing particles;
• b. contacting the liquor particles with a centrifugal force for a time sufficient to generate particles of a predetermined size and morphology;
• and
• c. returning unused reagents and particles of a non-predetermined size to the tank.

A system for preparing a plurality of specific sized particles, the system including a plurality of particle producing modules, each module comprising:

• a. a continuous stir tank reactor adapted to receive reactants;
• b. a centrifugal dispenser positioned downstream from the reactor and in fluid communication with the reactor;
• c. a particle separator positioned downstream of the dispenser for collecting the specific sized particles;
• and
• d. a solution stream return conduit positioned between the separator and the reactor.