However, it is generally preferred that the polymer be dispersed in {HEAD ~ water} before contacting {TAIL ~ the polymer} with the other components 
However , it is generally preferred that the polymer be dispersed in { HEAD ~ water } before contacting { TAIL ~ the polymer } with the other components
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH