The apparatus includes {TAIL ~ an absorbent, wicking material} that is permeated with {HEAD ~ catalyst solution} 
The apparatus includes { TAIL ~ an absorbent , wicking material } that is permeated with { HEAD ~ catalyst solution }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD