[3dem] pumping down liquid nitrogen dewars

[Tobias Furstenhaupt]

Dear colleagues,

we have about 8 dewars to store our cryo samples. Some are rather old (10+ years) and insulate badly (=large consumption of nitrogen).
Each of the dewar has something that looks like a valve (see attached foto) to pump the vacuum between the two walls.
Does anybody of you know the name of the corresponding connector and where to buy it (europe/US)?

cheers 
Tobias 


----------------------------------- 
Tobias Fürstenhaupt, PhD 
head of Electron Microscopy 
Max Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG) 
Pfotenhauerstrasse 108 
01307 Dresden, Germany 

mail: furstenh at mpi-cbg.de 
phone: (+49) (0)351 210-2690 
cell: (+49) (0)176 / 44498706 (NEW!)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: vacuum-connector.jpg
Type: image/jpeg
Size: 69744 bytes
Desc: not available
URL: <http://mail.ncmir.ucsd.edu/pipermail/3dem/attachments/20240222/ebc57c10/attachment-0001.jpg>