I've got another interesting challenge with our Bruker Avance 300.
We need to do a liquid N2 fill, but our building elevator is out of order, so our dewar is not able to be brought up to the NMR. We need to come up one floor. I've let facilities know of the urgency of the situation, but it may not be repaired this week. We're pretty low, and I'm really afraid to let it go until Monday.
So far we've got two ideas for filling the magnet.
1. Leave the dewar in our loading dock and run tubing from the dock through the window to the NMR (which is immediately above the dock). The amount of N2 we'll lose in the warm temps is concerning.
2. Use the small dewar that is with our system for low temp experiments and use that to shuttle N2 up the stairs and pour it into the magnet using a large funnel attached to the rubber tubing that we usually attach the dewar to.
Any other ideas?
Janet A. Asper
Assistant Professor, Chemistry
University of Mary Washington
1301 College Avenue
Fredericksburg, VA 22401
540-654-1143: 540-654-1081 fax
jasper_at_umw.edu
Received on Thu Jul 07 2011 - 09:21:56 MST