{HEAD ~ Methods} for introducing a substantially uniform concentration of a functional agent into {TAIL ~ a flowing stream} of water using a shaped composition 
{ HEAD ~ Methods } for introducing a substantially uniform concentration of a functional agent into { TAIL ~ a flowing stream } of water using a shaped composition
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH