UW CHEMISTRY NMR
Announcments & Equipment Logs
UPDATE: AV500 – SYSTEM IS UP AND RUNNING
Users are requested to resume data collection. Please inform us of anything unusual. Thank you for your patience.
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ALERT : AV301 – BROKEN PROBE INSERT
The AV301 instrument is not available for immediate use owing to the following. The shim set that gave good lineshape last week gives a poor lineshape today. This is indicative that the insert quartz tube is broken once again. If this turns out to be the case, we will replace the same asap and return […]
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NOTE : POWER FLUCTUATION TODAY MORNING
A voltage fluctuation that occurred today morning disrupted the normal functioning of some of the NMR consoles. As I write this, all the consoles are restored to normalcy, except for the AV500 console. An update will be posted in due course about AV500.
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ALERT ! : AV500 DOWN
A power fluctuation today morning has led to widespread disruptions in several NMR consoles. As of now, the AV500 console is down and it might take the better part of today before it is up again. Please plan accordingly.
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AV301 : UPDATE ON LINESHAPE PROBLEM – BROKEN PROBE PART REPLACED
The deterioration of lineshape noted by users is traced to a broken insert glass. This has been replaced and the line shape is adequately restored for the routine runs. A further fine tuning will be done in a few days to bring it to the optimum.
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All Instruments: Reservation System is up
Please use the reservation system per usual for all time after 10:45 am.
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All Instruments: Reservation System
We are aware the instrument reservation online system is down. It is currently being worked on. Until the reservation system is up, you can reserve your NMR time by using the sign-up sheet next to the NMR instrument you want to use.
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AV500 : 31P MACRO FUNCTIONAL
Users who are used to typing ‘phosph’ and load the standard 31P {1H} decoupled parameter set are invited to use the same once again. The glitch that was preventing the pulse widths and power levels being loaded is remedied. Any observation you make to the contrary will be much appreciated as a log post.
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AV301 UPDATE : LINESHAPE OPTIMIZED
The lineshape distortions following the probe swap are addressed now. Users are requested to load the default shim file ‘stdtxd’ before they run their NMR. It is important to note that you must shim at the minimum the Z, Z2, X, Y gradients to get an acceptable lineshape. The default shim file only guarantees the optimum […]
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ALERT ! AV500 UPDATE : UWNetid FUNCTIONAL – AGAIN
Users are requested to note that they can user their UWNetid login as before to operate the NMR spectrometer. A new operating system platform has been installed to address the vexing problem of Netid login failure. This transition should provide trouble free UWNetid login as well as a smooth execution of all the Topspin automation […]
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