Profile: Dispersion Technology, Inc. is engaged in developing analytical instrumentation suitable for characterizing particle size distribution and zeta potential in concentrated complex liquid systems, such as pharmaceuticals, cement, ceramics, paints and emulsions. Our Model DT-1201 uses acoustic spectroscopy for measuring particle size in concentrated dispersions and emulsions. Model DT-300 is a zeta potential analyzer that can be used for characterizing not only liquid particulates, but porous bodies as well; that is, it is capable of determining zeta potential of particles in liquids.