UW CHEMISTRY NMR
Announcments & Equipment Logs
AV300 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 AV300 instrument by submitting an entry using the “Post Log Entry” box found below.
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305 Responses to “AV300 Log Book”
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Rajan,
Did you get this in an email?
OK. everyone on the NMRISSUES list, let me know that you are getting these comments that I am posting. These are comments that I’m posting directly to the WP site per normal, so I think we are in business. I assume you are getting these since I am getting them via the list as well.
Also is this enough information for you? There is a link to the comment as well as the content and the date and time.
Topshim failed 5 times in a row, message said to set shims, BSMS limit exceeded. Sample was in CD3CN.
Failed to topshim on CDCl3 five times in a row (took 10+ minutes and ended up having to switch machines), error message said signal to noise is too low.
Failed Topshim for 2 samples today. Both samples were in CDCl3 and reported error “low signal to noise”
VTU has an error and instrument won’t lock.
Topshim failed (in CDCl3)
Topshim failed twice
topshim failed on a molecular sample in CDCl3 at first, error was too many points lost during fit. I tuned and matched, then went back and tried to shim again and it worked this tim.
topshim failed 4 times