Preferably, {HEAD ~ the substrate} is exposed to the solution for {TAIL ~ between approximately 1 minute} and 24 hours and, more preferably, for approximately 30 minutes or less 
is exposed for
Preferably , { HEAD ~ the substrate } is exposed to the solution for { TAIL ~ between approximately 1 minute } and 24 hours and , more preferably , for approximately 30 minutes or less
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH