The amount of ester used will be in {HEAD ~ the range} of from about 0.3% to {TAIL ~ about 3%} 
The amount of ester used will be in { HEAD ~ the range } of from about 0.3 % to { TAIL ~ about 3 % }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL