UW CHEMISTRY NMR

Announcments & Equipment Logs

August, 2018

AV500 : WORKING NORMALLY

Few of the users have noticed a spike ridden baseline in the past several days, mostly in 1H spectra, apparently.  Evidently this is a sporadic issue since not all of them have reported this.  As I speak, the spectrometer is giving clean 1H spectrum, as shown below :   Multiple causes can account for the […]

Posted in Hardware, Spectrometer | No Comments »

ALERT ! AV700 – DOWN DUE TO HARDWARE FAILURE

We have a failing amplifier on this instrument (talk about coincidences – or more like resonance !) that makes it unusable currently.   Normally we hope to fix this kind of issue in house and we will attempt to do so in this case also. I will post an update at least by tomorrow that should […]

Posted in Hardware, Spectrometer | No Comments »

UPDATE ! DRX499 – SYSTEM IS BACK IN ACTION

The X-channel is looking pretty good after we replaced the faulty part with a back up amplifier unit.    Just to give a glimpse,  here is the result of 8 scans of 13C recorded on the solvent of lineshape standard.  Things look pretty good at this point.  PLEASE NOTE :  With the new amplifier in place, […]

Posted in Hardware, Spectrometer | No Comments »

ALERT ! DRX499 : SYSTEM DOWN DUE TO AMPLIFIER FAILURE

The X-channel amplifier is compromised and we are looking into alternatives. We will try to provide at least a workaround to revive the system immediately.  The reservation calendar will be blocked for further booking until the system is nominally operational. Look for updates from this space later. NMR Facility Manager 8/15/2018

Posted in Hardware, Spectrometer | No Comments »

ATTENTION USERS ! – SPECIALIZED TRAINING PLANS – PLEASE READ !

Over and above the simple but minimal training that is provided by the facility for the new users,  we always recognized the need for training you in some special tasks such as how to properly maneuver the Lock facility or how to Shim by hand when Topshim fails, to site as examples. We are finally […]

Posted in NMR Applications, Spectrometer, Usage | No Comments »

UPDATE ! DRX499 – BBO – Z Gradient probe is in place…

Please remember to load the default shim set : stdbbo  before setting up the experiment. NMR Facility Manager 8/6/2018

Posted in Hardware, Spectrometer, Usage | No Comments »

UPDATE : DRX499 -PROBE SWAP DELAYED..

Due to  unavoidable changes, the probe swap is going to be moved to Monday the 6th.  Sorry for the inconvenience. NMR Facility Manager 8/3/2018

Posted in Hardware, Spectrometer | No Comments »

AV700 : PROBE CHANGE SCHEDULED FOR NEXT WEEK

Currently placed probehead will give way to the TXI-1H{13C, 15N}-Z gradient probehead and the swap is planned for next Tuesday, the 7th, Aug.  After the calibration steps the probe should be available for regular by late in the afternoon. I will post an update once the swap is done successfully and if there are any […]

Posted in Hardware, Spectrometer | No Comments »

NOTE : DRX499 – PROBE CHANGE THIS FRIDAY

We will  swap the existing TXO-13C,19F {1H} Probe with the BBO-X {1H}-Z Gradient probehead, coming Friday, the 3rd of August.  As we all know by now, over and above 13C use,  this probe can serve the needs of 31P and other users as well, with much better sensitivity that is provided by the AV500 instrument’s […]

Posted in Hardware, Spectrometer | No Comments »