Prior to reaction, {HEAD ~ the reaction mixure} is given {TAIL ~ an effective amount} of a non ionic detergent, and agitated 
is given
Prior to reaction , { HEAD ~ the reaction mixure } is given { TAIL ~ an effective amount } of a non ionic detergent , and agitated
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH