Announcments & Equipment Logs

AV500 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 AV500 instrument by submitting an entry using the “Post Log Entry” box found below.

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187 Responses to “AV500 Log Book”

  • Travis says:

    The wobb curve for 31P looks like back of an upside-down camel with two humps.

  • grierson says:

    Used AV500 on sat and Sun. Spurious, sharp peak at 3.5 ppm,not from sample. Any comments?

  • Mary says:

    Wobb for 1H NMR is not stable.

  • Yilin Li says:

    I did several 13C NMR recently (in CDCl3) and found that the S/N was very high, even for a 1 hour scan. Peaks can hardly be identified. This is abnormal compared to my previous experience using this instrument. By the way, 1H NMR works well.

  • grierson says:

    Fri 12-22-17 at the 500 MHz instrument, the sample eject of the dummy tube will not happen. Topspin gave an error message that there is a spin rate error. Logging out then in does not fix the problem.

  • grierson says:

    Wobb not stable enough for T/M (18:45)

  • grierson says:

    Wobb not stable enough to T/M

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