UW CHEMISTRY NMR

Announcments & Equipment Logs

UPDATE : NMR RESERVATION PAGE IS OPERATIONAL

Please let us know if you see any more issues with the NMR web reservation system.

Posted in Host Computer, Operating System | No Comments

ALERTS : NMR RESERVATION SYSTEM IS TEMPORARILY DOWN

We have informed our IT support and they are looking into it.  An update will be posted upon restoration.

Posted in Host Computer, Operating System | No Comments

AV301 : PLEASE NOTE ! : SAMPLE INJECTION AND J-YOUNG TUBES

J-Young tubes tend to shift the center of mass once you place it in the spinner, compared to regular tubes. The tube tends to wobble as it rides the air cushion,  when it descends into the magnet and sometimes the sample seating can become problematic. In AV301 this problem is a bit exacerbated currently, since […]

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UPDATE ! NMR RESERVATION SYSTEM IS BACK ON TRACK

Please book the time as usual and report to me if you see anything unusual.   NMR Facility Manager

Posted in Host Computer, Operating System, Spectrometer, Usage | No Comments

ALERT ! RESERVATION SYSTEM WILL BE DOWN FOR MAINTENANCE

Users are requested to note that the Chemistry IT team will be taking the  NMR Reservation system computer offline for an urgent maintenance issue.  The outage might last as long as 2 hours from now.   An update will be posted once it is back on line. NMR Facility Manager

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AV301 – UPDATE : LOCK SYSTEM IS BEHAVING NORMALLY

The intermittent locking issue should be gone by now as I have reset the Lock system.  If you still see a problem, feel free to post the observations in the instrument log online.  Remember, if the shims are way off or if the Lock phase is not correct, you will have problem locking on your […]

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AV301 : ALERT – PROBE CHANGE TUESDAY, JUNE 2

The TXD-19F{1H} probe will be replaced with the PABBI probe by the afternoon of Tuesday, June 2.   After the calibration steps the instrument should be ready for regular use around noon of Wednesday, June 3.

Posted in Hardware, Spectrometer | No Comments

AV500 – UPDATE : VT SYSTEM ANOMALY RECTIFIED

The VT system had stability issues that led to sudden loss of temperature control.  The cause of this problem has been identified and dealt with.   Users are requested to always start the ‘edte’ program and ensure that the temperature is stabilized before they proceed with 1D or nD NMR.  Please let us know if you […]

Posted in Hardware, Spectrometer | No Comments

DRX499 : UPDATE – INSTRUMENT PERFECTLY NORMAL !

Some user had attempted (incorrectly) to route the 2H cable for a possible attempt of 2H NMR on the instrument. That led to the condition where subsequent users could not use the Lock system. This is remedied and the system is back to normal for locking on any solvent. If you are not sure of […]

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AV500 – UPDATE : THE INSTRUMENT IS NORMAL AGAIN !

The Lock resonance was set to a wrong Field value leading to no observable signal even though all the indications would have made you feel that there is no hardware problem anywhere.  The problem is rectified and you shouldn’t have any issues with acquisition.  If anyone is curious to learn more on the problem, please […]

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