UW CHEMISTRY NMR
Announcments & Equipment Logs
Spectrometer
Alert: NMR Facility available after power outtage
According to UW Alerts, the UW lost power about 11 am this morning and it was returned by 1 pm. As of the posting of this announcement, the instruments in BAG 37, the av300, av301, av500, and drx499 are currently operating normally. If there is another power outtage due to weather or a tree branch, […]
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AV700 : UPDATE – TRANSITIONS TO SOLIDS POSTPONED TO NEXT WEEK
As the solids NMR user base has sample preparation issues, the instrument will remain in solutions mode until next Wednesday, 26th of August ’15. The migration to Solids is expected to be complete by the end of that day.
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AV700 : SYSTEM WILL MOVE TO SOLIDS FROM TOMORROW
As announced about three weeks ago, the system will move to solids and serve the solids community for about six weeks, beginning Wedensday, August 19th, evening. Any change in this schedule will be updated.
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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.
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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 […]
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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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AV300: Tune and Match restored
The av300 tuning has been restored. Users must always and only use the tune tool when tuning and matching any probe! This is especially important on the BBI probes. Please also only apply pressure vertically and never at an angle.
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ATTENTION : DRX499 – USERS’ COOPERATION NEEDED
As we all know, the DRX499 magnet takes involved effort to shim up to get usable lineshapes. Duration of 24 hours or more for shimming all the 28 shims is not uncommon. All this effort gets wasted when users inadvertently turn the wrong ‘knob’ under the magnet while they are trying to tune and match […]
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AV301 : ALERT – PROBE CHANGE THIS FRIDAY
The BBI probe will be replaced with the TXD-19F {1H} probe by the afternoon of this Friday, the 17th. After the calibration steps the instrument should be ready for regular use around noon of Saturday, 18th April. Further updates will be posted in this space.
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