Hello All,

I have had an odd thing happen with one of our CX100 shipping dewars.  It 
became obvious that it had lost its vacuum, cold outside, LN2 boiling off 
quickly.  I pumped the dewar down, vacuum was not great but I figured I would 
test to see if it was holding vs. warming up immediately.  It did not hold but 
when I went to mark it as bad I noticed the plug for the vacuum jacket was 
missing.  It was not still on the vacuum connection and I know it was in there 
after pumping it down.  I found it on the floor a fair distance from were the 
dewar was so I think it popped out on its own

Curious if anybody has had a similar experience.  I am not sure whether it is 
worth the time to pump it down again or just surplus it  and buy a new one.

Best,
Len

Leonard Thomas, Ph.D.
Biomolecular Structure Core, Director
Oklahoma COBRE in Structural Biology
Price Family Foundation Institute of Structural Biology
University of Oklahoma
Department of Chemistry and Biochemistry
101 Stephenson Parkway
Norman, OK 73019-5251
Office: (405)325-1126
lmtho...@ou.edu<mailto:lmtho...@ou.edu>
http://www.ou.edu/structuralbiology/cobre-core-facilities/mcl


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