{TAIL ~ The size} and {HEAD ~ number} of modules in each set and the flow configuration is dependent upon the degrees of concentration achieved, the permeate fluxes attained through the membrane, and module cost 
{ TAIL ~ The size } and { HEAD ~ number } of modules in each set and the flow configuration is dependent upon the degrees of concentration achieved , the permeate fluxes attained through the membrane , and module cost
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH