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