Also to the this end, the ampule nozzle may be cast in {TAIL ~ a secondary operation}, or the nozzle can be formed by inserting or attaching {HEAD ~ a separate orifice} to the ampule 
Also to the this end , the ampule nozzle may be cast in { TAIL ~ a secondary operation } , or the nozzle can be formed by inserting or attaching { HEAD ~ a separate orifice } to the ampule
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH