By contacting the permeated wicking material with the substrate, controlled amounts of catalyst solution may be applied to {HEAD ~ delimited areas} of {TAIL ~ the substrate} 
By contacting the permeated wicking material with the substrate , controlled amounts of catalyst solution may be applied to { HEAD ~ delimited areas } of { TAIL ~ the substrate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL