UW CHEMISTRY NMR
Announcments & Equipment Logs
Usage
AV800 UPDATE : INSTRUMENT FUNCTIONAL
Users are welcome to contact me for NMR time during the walk-on period on the 800 instrument. The next slot begins on Monday, the 8th of April ’13.
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AV301 UPDATE : INSTRUMENT READY FOR USE (AGAIN…)
Users ! Please take a few moments to focus on sample insertion sequence, confirm that the sample is seated properly in the NMR magnet and then start zipping off with your experiments. Remember, one person’s haste can cost lot of lost instrument time for the entire user base. Thank you for your cooperation.
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AV500 : INSTRUMENT READY FOR USE
Users can start booking time on this instrument. The probe is : 1H {19F, 13C} – Z gradient. Temperature range (without LN2 evaporator) : +10 C to +70 C. Standard Shim File : stdtxo
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ALERT : AV301 DOWN DUE TO USER ERROR
A user has dropped a NMR sample tube without the spinner and lift air, into the magnet bore. As a result the spectrometer is not immediately useable. The issue will be resolved by Tuesday, April, 2nd and a follow up will be posted here.
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ALERT ! AV301 UPDATE : SYSTEM READY FOR USE
The AV301 instrument is ready for use after a long hiatus. It will be hosting the Automated BBI probe that completely eliminates the need to tune and match by hand. For any given experiment or parameter set, you need to just enter the command “atma” on the command line. The ‘wobb’ will be automatically performed […]
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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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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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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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