An ampule is molded with an enlarged nozzle and a separate orifice is installed in {HEAD ~ the ampule} to provide {TAIL ~ the desired nozzle opening} 
to provide
An ampule is molded with an enlarged nozzle and a separate orifice is installed in { HEAD ~ the ampule } to provide { TAIL ~ the desired nozzle opening }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL