processing equipment. Size ' reduction brings about a degree of uniformity (a requirement of most mechan ical sorting systems) in terms of the maximum particle size of the diverse components of the incoming waste stream. Sizereduction equipment used in solid waste proc essing includes hammermills, shear shredders, flail
Separation of the sample takes place inside the column, a hollow tube tightly packed with extremely small porous beads, typically. polymer or silica, designed to have pores of well defined size. The columns vary in length from 50 mm to 300 mm, and internal diameters of to .