Paraformaldehyde can also be used if {HEAD ~ sufficient water} is added to the reaction to maintain all or a substantial portion of the curative in {TAIL ~ solution} 
Paraformaldehyde can also be used if { HEAD ~ sufficient water } is added to the reaction to maintain all or a substantial portion of the curative in { TAIL ~ solution }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL