The membrane may be broken through an activator on the closure, such as a depressible member or a rotatable carrier, causing {HEAD ~ the sample holder} to break through {TAIL ~ the membrane} 
The membrane may be broken through an activator on the closure , such as a depressible member or a rotatable carrier , causing { HEAD ~ the sample holder } to break through { TAIL ~ the membrane }
OTH OTH 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 REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL