Abstract: Modified radial-flow rotor-stator mixers 10 comprise: A. A housing 13 comprising a first stator 16 and a second stator 17; B. A rotor 12 positioned between the first stator 16 and the second stator 17 so as to form a first chamber and a second chamber within the housing and to provide fluid communication between the first and second chambers, the rotor 12 connected to a rotatable shaft 11; C. A primary inlet 24 positioned within the first chamber at a low shear region; D. Two or more secondary inlets 30A, 30B positioned within the first chamber at one or more regions of higher shear than that of the primary inlet 24; and E. An outlet 26 positioned within the second chamber.