The sensor 19 wherein said nonconductive organic polymer in one of said chemically sensitive resistor in said array is different from {HEAD ~ said nonconductive organic polymer} in {TAIL ~ at least one other chemically sensitive resistor} in said array 
in
The sensor 19 wherein said nonconductive organic polymer in one of said chemically sensitive resistor in said array is different from { HEAD ~ said nonconductive organic polymer } in { TAIL ~ at least one other chemically sensitive resistor } in said array
OTH OTH 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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH