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