The complexing agent can be added to {HEAD ~ either solution} provided the final mole ratio of complexing agent to {TAIL ~ zirconium} is greater than or equal to 1 
The complexing agent can be added to { HEAD ~ either solution } provided the final mole ratio of complexing agent to { TAIL ~ zirconium } is greater than or equal to 1
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH