{HEAD ~ A breakable membrane}, such as a piercable foil, extends within the container and separates {TAIL ~ the two chambers} 
{ HEAD ~ A breakable membrane } , such as a piercable foil , extends within the container and separates { TAIL ~ the two chambers }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL