UW CHEMISTRY NMR
Announcments & Equipment Logs
Hardware
ALERT ! AV500 – IMMINENT PROBE CHANGE TO 19F-TXO
Dear Users Concurrent with the ongoing deployment of new GG500 console (replacement for old DRX499), we are working to move the 19F capability to AV500. The unique hardware configuration of GG500 doesn’t allow us to run the TXO-19F probe with this console. AV500 has the necessary capability and we had used this probe with AV500 […]
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UPDATE ! GOOD BYE DV500 :-{ HELLO ! GG500 :-)
Dear NMR Users Though embarassing , I must admit that this is the shortest life span of an NMR instrument that I had the privilege of handling as a Facility Manager thus far, which is of course entirely my own making. Just after I announced the new instrument’s identity and the rationale behind it, I […]
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Exciting News ! Console Upgrade -GOOD BYE DRX499 ! PLEASE READ…
Dear NMR Users I am excited to announce that our venerable and long serving DRX499 NMR console is finally going to be retired after almost 30 years of service. In it’s place steps in, a Bruker AVANCE III vintage console, which will be paired with the original magnet of DRX499 with its excellent B0 […]
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ALERT ! AV500 OK – WITH IMPORTANT CHANGE – PLEASE READ !
CURRENT STATUS : First I will highlight that the sporadic Topshim problem is gone now and the shimming is behaving as expected. That should come as a relief to all of you who exclusively use 2H lock solvents other than (H2O+D2O) or (CH3OH+D2O). IMPORTANT – PROBEHEAD CHANGED TO BBI In the process of system troubleshoot, […]
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ALERT ! AV500 – TOPSHIM OCCASIONAL ISSUES
Since the majority of lock solvents used for routine NMR on this instrument are fully dueterated, for those users, the Topshim routine heavily relies on the ability to get good 2H NMR signal response from the hardware. Following reports of sporadic failure of Topshim, I have done a bit of deeper digging and there is […]
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UPDATE : AV500 – SAMPLE HANDLING IS FINE – NO PROBLEMS DETECTED
This is the second instance where I saw a post saying that sample couldn’t be ejected. But I didn’t detect any issues per se and all the vitals of the instrument are normal. If users need some clarification and refresher as to how the sample eject/inject sequence works and what are the possible ways one […]
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UPDATE ! : AV500 – SAMPLE HANDLING IS NORMAL
Sample eject anomaly reported by folks today morning is resolved now. Along with it, I have also checked the general health of the instrument and all vital signs are normal. NMR Facility Manager 6/8/2021
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UPDATE : AV500 – IS BEHAVING NORMALLY
In continuation of today morning’s instrument log post, I can confirm that the ‘wobb’ function as well as the ‘Topshim’ functionality works just fine. I will also add that the probehead is tuning as expected as well for the 1H channel. I have also run some test runs and the overall behavior of the probe […]
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UPDATE : AV301 – SAMPLE HANDLING ERROR FIXED
The sample eject/inject issue has been resolved. In the process of checking other BSMS related functions, I have also updated the optimal default shim file : stdpabbi. When you are in doubt, always use : rsh stdpabbi to take advantage of the best higher order shims that will give you the best lineshape for all […]
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UPDATE : DRX499 – IS BACK TO NORMAL
The acquisition error reported in the log is fixed now. NMR Facility Manager 3/29/2021
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