UW CHEMISTRY NMR
Announcments & Equipment Logs
Spectrometer
AV301 – QUICK UPDATE
Since the 19F probe will take more time to fix, the automated BBI probe is being primed to replace the ailing probe. Along with line shape optimization, an existing VT system issue is also being addressed at this time. Owing to these, it has taken longer than expected to bring the instrument back on line. […]
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AV301 : PROBE HEAD PROBLEM – SYSTEM DOWN
A possible breakage inside the probe makes the system unusable as of now. The matter is being looked into. An alternative solution will be provided as soon as feasible.
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AV700 : PROBE CHANGE ALERT
The current 3.2 mm MAS solids probe will give way to the TXI-HCN triple resonance solutions probe soon. The solutions probe will be ready for use by Monday, 10th March. Users are requested make plans accordingly.
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AV301 UPDATE : BROKEN PARTS IN PROBEHEAD
Most probably due to a combination of poor quality NMR tubes that were spun and a less than careful sample positioning in the sample spinner, by various users, the expensive quartz insert glass tubes inside the probe have been shattered. All the woes of the past few days, with the sample seating, difficulty in spinning […]
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DRX499 UPDATE : lineshape and standard shims
Although more work needs to be done, the reported high order shim distortion has been removed and the shim set is eminently useable. Users should get back to me if they find specific issues in shimming with respect to their samples. Please use the default start up shim set : stdbbi before you attempt your […]
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DRX499 : ALERT – Lineshape Optimization in progress
Following the feedback from several users about asymmetric lineshape distortion in spectra, the lineshape optimization routine is setup on the instrument, which will run overnight. If the problem persists after this, other possible causes to this issue will be explored. Users who have blocked the instrument today are requested to move to other instruments for […]
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AV700 : INSTRUMENT IS FUNCTIONAL
AV700 is fully functional and will be hosting a solids MAS probe currently. Probe change to a solutions probe will be announced here subsequently.
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FACILITY UPDATE : Help for Users – contacting facility manager
With the departure of Paul Miller from the NMR Facility to the new position, users are requested to direct all queries related to day to day NMR operations to the Facility Manager, Rajan Paranji i.e. the author of this note. I can be reached via the following means : Phone : 206 685 2581 […]
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