UW CHEMISTRY NMR
Announcments & Equipment Logs
Usage
AV700 – UPDATE : LOGIN ISSUES
We are working on the login issues mentioned yesterday by users. In the meanwhile, a temporary solution is provided where users can login with a generic account and use the instrument. Please contact either of the facility staff for credentials to use this account.
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AV700 – UPDATE ! NEW BBO SOLUTIONS PROBE WILL BE READY FOR REGULAR USE SHORTLY
The 700 MHz instrument has a new BBO solutions probe installed that is capable of observing two nuclei at the same time. This is a state of the art probehead with Z-gradient capability and it can reach sample temperatures of 110 C, for prolonged runs. With the modern low VT system, the samples can be […]
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NOTE – NMR RESERVATION SYSTEM INTERRUPTION ON SUNDAY, Jan 4th
Our IT support has announced a maintenance schedule on Jan 4th from 7.00 am to noon that will affect the NMR reservation server. Users are encouraged to book their time before Sunday itself to circumvent this disruption.
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ALERT – DRX499 : WALK ON TIMING UPDATE
To bring the two 500 MHz instruments on par and to ease the load on the AV500 spectrometer, that is being heavily booked of late, users are informed that the walk-on duration on DRX499 is extended to a 3 hour limit from the current 1 hour limit. This should help users significantly. For instance one […]
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AV 700 UPDATE: Returned to use with TXI probe
The problems with the av700 pneumatics board have been resolved. The AV700 is available for use with the solution TXI probe. The av700 will be changing to solids in a couple weeks.
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DRX499 : UPDATE – OPERATIONAL WITH LIMITED FUNCTIONALITY
The spectrometer with the TXO probe is operational fully with 1H and 13C channels. The 19F is not yet ready for prime use as I write this and I will post an update once that issue is resolved as well. The instrument is open for regular use, with the above caveat.
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UPDATE: AV300, AV301, AND AV500 AVAILABLE FOR USE
The errors being seen on the av300, av301, and av500 from the power fluctuations yesterday have been resolved. The spectrometers are now available for use. Please contact the facility managers and use the logbooks should you find further problems. Thanks.
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AV500 – SHIM UPDATE
Some users had complained that they are not able to get good line shape for their sample and Topshim software did not help, apparently, either. My experience today has been different. The spectrum shown below is the result of a successful shimming operation with Topshim, for running this reasonably demanding 1D spectrum that suppresses 95% […]
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AV500 – TOPSHIM – NOTE ON AUTOMATIC SHIMMING
There are still some pending calibration operations with the TXO-19F probe that was put in yesterday and this makes the Topshim automatic shimming unusable currently. As you may be aware, there’s been an impact on available NMR time due to probe issues on other instruments. To minimize this, we will keep using the TXO-19F {1H,13C} […]
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