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