UW CHEMISTRY NMR
Announcments & Equipment Logs
Usage
UPDATE – AV500 – VT SYSTEM OK !
It turned out that there were lose connections in the cables to the VT sensor as well as heater in the probehead, that led to observed symptoms. These were sorted out and the VT system is functioning ok now. please proceed to setup your temperatures as usual.
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UPDATE ! AV500 — SYSTEM IS FULLY OPERATIONAL
Users can start booking time on the instrument immediately. The probehead is the same as before i.e. BBI – Z-gradient. The issue with this probe has been resolved. Topshim has been tested and working correctly both in 1D and 3D modes. Please contact Adrienne or myself, if you have any questions. Sorry of this long […]
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NOTE ! AV500 – LOCK IS WORKING OK
The lock problem noticed by users is because of a non-optimal value of lock phase. Normally the AutoLock routine tries to adjust this value within a range but once it falls outside of this, lock fails and manual intervention is necessary. That is done now and everything should be normal. Please note that Topshim on […]
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AV300 – UPDATE ! DATA STORAGE PARTITION IS MOVED
If users recall, we place special emphasis on the fact that you should download your datasets then and there and don’t leave it on the NMR computer. A good validation of that occurred yesterday as I found that the external hard drive storing NMR data crashed with mechanical failure. As a result, you won’t see […]
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ALERT ! AV500 – PROBE CHANGE ON THURSDAY, 11TH FEB ‘ 16
The BBI Z-gradient probe has been repaired and is ready to be installed and field tested. We will put in the probe by the afternoon of Thursday, 11th February ’16. Hoping that everything turns out right, the spectrometer should be ready for regular use by that evening.
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AV300: BBI PROBE INSTALLED
The BBI 1H{X} probe has been installed on the av300. It is released for use. We are still observing some noise on the wobb for both channels, which we are working on resolving. Thank you for your patience.
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USERS NOTE ! AV301 AND OTHER INSTRUMENTS – NEED YOUR HELP
Those of you who change the temperature to anything other than the room temperature i.e. 298 K are requested to be considerate to the next user. Please change the default temperature to 298K before you logout. Inadvertently, you might be freezing the next user’s sample or killing the molecule that may not be cozy at […]
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ATTENTION ! AV301 UPDATE : GRADIENTS AND TOPSHIM OPERATIONAL
The new gradient capability is fully functional. Combined with the ATMA feature of the porbehead, users can do everything from the computer desktop, including shimming using TOPSHIM. PROBE TUNING : After inserting sample and setting up the correct dataset, just enter atma on the command line. Wait for the auto tuning/matching to complete. SHIMMING : Topshim […]
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NOTE ON AV301 – PABBI PROBEHEAD AND SHIM
As already mentioned, the new gradient upgrade is designed to function with only the ATMA-BBI probe, as currently there are no other 300 MHz probes that feature gradient capability. So, the probehead has been changed to PABBI and the probe ID card on the console lists the shim file to load and use along with the […]
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UPDATE – DRX499 – INSTRUMENT RELEASED FOR USE WITH TXO PROBE
The BBO probe has been found to have multiple hardware issues which are being addressed. To get to back to productive runs, we have placed the earlier TXO – 19F,13C {1H} – Z gradient probe for regular use. I would like to point out that the non-spinning shims are not upto the best spec but […]
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