UW CHEMISTRY NMR
Announcments & Equipment Logs
AV301 Log Book
Welcome to the Chemistry NMR Online Log Book – your One Stop portal to communicate about the spectrometer to the Facility Staff in a timely manner.
Please record your comments and relevant observations about AV301 instrument by submitting an entry using the “Post Log Entry” box found below.
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261 Responses to “AV301 Log Book”
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Cannot get sample to eject on console or by typing ej
Cannot lock on D2O
The issue with the lock system has been resolved. Lock should occur as normal. Please contact a facility manager if you encounter any problems. Thank you.
Can’t lock on c6d6
A temporary fix to the lift air line has been put into place. Please be careful of the clear plastic tubing running from the console to the magnet until it can be better located.
At this time, there should be no issues with the lift system.
There is a leak in the lift air line. Because of the nature of changing the plumbing, time has been reserved for tomorrow afternoon to fix this issue.
In the meantime, if you are having troubles getting the decoy or sample after pressing the lift button, plug the hole (it is noisy and apparent when the air is flowing). Once the sample is up, it will stay up.
There is no other issue with 301 operation.
The phasing of peaks over the last few days – since the PABBI has been in, actually – has been terrible. It is so messed up that accurate integrals cannot be determined, making the data of limited use at best.
The baseline of spectra is very noisy. It looks almost as if the gain is too high. This has happened on multiple days with multiple samples. Taking spectra of the same samples on the AV300 does not show this “noise.”
DRX 499 computer display screen isn’t working
Can’t wobb the 301, 300, or 500. Error message pops up saying the wobb signal is too weak.