premiers workhorse for the lab, widely used for the processing of small batches in the lab or pilot plant. with mechanical speed drive and 1.5 or 2.0 hp explosion proof motor, this unit has the power to satisfy a wide ra......premiers workhorse for the lab, widely used for the processing of small batches in the lab or pilot plant. with mechanical speed drive and 1.5 or 2.0 hp explosion proof motor, this unit has the power to satisfy a wide range of applications where mixing problems exist. the 2500hv breaks up agglomerates and reduces particle size. increase your mixing efficiency with premiers line of interchangeable mixing heads. hi-vis head simplex head duplex head rotor/stator head heads are also interchangeable with premiers model 2005 lab dispersator mixer.