Preferably {HEAD ~ the apparatus} of the invention is for removing impurities which have {TAIL ~ a relative volatility} between that of EO and water 
Preferably { HEAD ~ the apparatus } of the invention is for removing impurities which have { TAIL ~ a relative volatility } between that of EO and water
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH