consequent laminar plating; in extreme cases, it can cause the work rack to walk out of its
proper position.
Propeller-type mixers, commonly used in pollution control reaction tanks, can dice up the
precipitated floc and impede its settleability/filterability. Circulation pumps can, through
cavitation, wreak havoc by volatilizing solution components.
Despite these potential problems, agitation is usually a requirement--and a surfeit more
generally acceptable than a shortage.