Another feature of the present invention is that {HEAD ~ the weakened portion} of {TAIL ~ the seal} or member separating the two reagents is located to direct one reagent toward the other 
of
Another feature of the present invention is that { HEAD ~ the weakened portion } of { TAIL ~ the seal } or member separating the two reagents is located to direct one reagent toward the other
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH