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