The Sturtevant MicronizerŽ is a jet mill employing compressed air or gas to produce particles less than one micron.  Product Details...

The Sturtevant PowderizerŽ is a "classifying impact mill" capable of reducing powders down to 5 microns.   Product Details...

The Sturtevant SimpactorŽ is a centrifugal, pin-type impact mill that reduces low- to medium-density materials to uniform fine particle sizes of 50-200 mesh.  Product Details...