Each of the high-capacity VIBROSCREEN units can screen up to 36 tons/hr. The rate at which material passes through the screeners depends in part on the last time they were cleaned. In conformance with GMP requirements, SBS cleans the screeners with steam and hot water either once a week or after a load. Personnel inspect the screeners after every loading operation to see if immediate cleaning is required. All material contact surfaces are of 304 stainless steel.