Single Clamp Micronizer® jet mill combines operation with narrow particle-size distribution in the production of fine powders for pharmaceuticals. A single clamp encircles the mill's 4" chamber, sealing it during operation and permitting easy disassembly, even in a glove box. Turning out spherical particles with diameters as small as a few microns for testing or preparing batches of formulations, mill can process up to 40 lbs/hr. It accepts raw materials of various particle sizes through a feed funnel and a replaceable venturi. As centrifugal force retains larger particles at the perimeter of the chamber, fins move toward the center where they are discharged for collection. Sturtevant Inc. 348 Circuit St. Hanover, MA, 02339