Whenever anything happened like this, I remove the shim stack and carefully
collect the large pieces, clean the spinner turbine, and sometimes open the
probe assembly to look for tiny pieces near the coils. This was enough to
fix everything.
I never attempted Shop Vac through the magnet bore as I believe the constant
air flow in the system should be able to lift out small debris.
I am interested to know what you hear from others.
Dr. Gopal Subramaniam (718-997-4123)
Department of Chemistry & Biochemistry
Queens College - CUNY
Flushing, NY 11367
From: Smallbrock, Margaret A. [mailto:Margaret.Smallbrock_at_sdsmt.edu]
Sent: Tuesday, March 13, 2012 3:07 PM
To: ammrl_at_ammrl.org
Subject: AMMRL: Broken NMR tube in NMR - Help
Greetings all,
I have a Bruker AC300 NMR. This morning, one of my users broke an NMR tube
in the NMR. I can see the tubes lying at the bottom of the sample stack. The
spinner is not in the magnet, just the remains of the tube lying across
where the sample drops through into the shim coil. (I believe this is the
best way to describe where it is)
I am trying to determine the safest method to remove the broken glass from
the system. I found both the top and bottom of the tube and the pieces at
the bottom appear to be the right length to have not shattered into tiny
pieces. I have a Shop Vac that has a 20 foot hose that I can park in a
corner away from the system. I was considering adapting tubing that would
fit into the sample compartment to capture the glass. I however did not want
to attempt it without vetting the idea with people that are far more
knowledgeable about NMR in general than I am.
Any suggestions on how to remove the glass would be very helpful if my
initial idea is not a good one or if you can provide ideas to make it a
better solution.
Thank you all,
Margaret Smallbrock
Margaret Smallbrock
Chemical and Instrumentation Specialist
Department of Chemistry
SD School of Mines
501 East St. Joseph Street
Rapid City, SD 57701
(605) 394 - 1236 - Phone
(605) 394 - 1232 - Fax
Received on Wed Mar 14 2012 - 08:38:29 MST