In one configuration, the sample holder may be rotatable with respect to the closure to maintain the sample holder in a substantially stationary position within the first chamber during {TAIL ~ engagement} of {HEAD ~ the closure} with the housing 
In one configuration , the sample holder may be rotatable with respect to the closure to maintain the sample holder in a substantially stationary position within the first chamber during { TAIL ~ engagement } of { HEAD ~ the closure } with the housing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH