wherein the disposable sensing element is connected to {TAIL ~ a plurality} of {HEAD ~ similar elements} to form a stack, and 
wherein the disposable sensing element is connected to { TAIL ~ a plurality } of { HEAD ~ similar elements } to form a stack , and
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH