{HEAD ~ a hydrophobic, porous, oxygen permeable layer} positioned between said reagent layer and said {TAIL ~ support}, such that oxygen can permeate to said layer containing oxidase from both surfaces of said layer containing oxidase 
positioned between
{ HEAD ~ a hydrophobic , porous , oxygen permeable layer } positioned between said reagent layer and said { TAIL ~ support } , such that oxygen can permeate to said layer containing oxidase from both surfaces of said layer containing oxidase
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH