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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257 Responses to “AV301 Log Book”
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When I tried ‘ efp’ , it says ‘ disk quota exceeded’ , and I can’t see the spectrum.
Delwin
I shall take a look with my standard today and do the needful.
The standard shims on the AV301 are way off (for organic solvent). I ran three samples this morning on AV301 then ran them on the AV300. The lines were broad and misshapen on the AV301 with quite a bit of shimming and looked sharp and symmetrical on the AV300 with minimal shimming.
It took over 30min for the temperature to equilibrate up to 323. It looks like it needs to be re-tuned.
Tried acquiring 19F data tonight. When I went to wobb, the “matching” knob was non-responsive. When trying to adjust, the knob was making noises, and sounds broken. When I initially opened the wobb the frequency was way off.
Spinner not working (bsms display shows the spinner as red). When try to turn it on, get a funny noise that stops when you turn it off.
On the AV301, sample spinning is not stable. The spin button keeps flashing and it sounds as if there is a high nitrogen flow when spinning is turned on.
The paddle says the sample is missing, had some trouble ejecting and putting my sample in. The measurement still worked though.
Also had a problem with lock. The program went through the process of locking but the lock light never came on and the sample didn’t actually lock.
The sample wouldn’t lock to CDCl3 or DMSO. The lock light would either be off or blinking.