{TAIL ~ Reflux} times less than 6 hours can result in lower than desirable {HEAD ~ A/B mole ratios} in the product powder 
{ TAIL ~ Reflux } times less than 6 hours can result in lower than desirable { HEAD ~ A / B mole ratios } in the product powder
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH