UW CHEMISTRY NMR
Announcments & Equipment Logs
Spectrometer
ALERT ! AV300 – DOWN DUE TO PROBE ISSUE
Dear Users The ATMA function is not giving the expected result and it is being looked into. The instrument will be down until further notice. Please look for an update from me on this later today. NMR Facility Manager 8/13/21
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UPDATE : GG500 – WORK IN PROGRESS…
Dear Users But for the radio silence from my side due to a week long break I took, I wanted to assure you that I am aware of the bug you all reported about clicking ‘eda’ and the enusing inactive Topspin/IconNMR interface. I am working on this and will update you once a resolution is […]
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UPDATE ! AV500 – TXO -19F DEDICATED PROBE IS INSTALLED AND READY
Dear Users In continuation of my Imminent Probe Change announcement last, I would like to update the following. AV500 now has the 19F capability ! Installed Probe : TXO – 19F,13C {1H} – Z Gradient We all have been using this probe via the IconNMR interface in the recently retired DRX499 system. So, now […]
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UPDATE ! GG-500 IS OPEN FOR BUSINESS !!!
Dear NMR Users ! The long wait is over ! We are proud to present the Latest Additon to our family : GG500 Currently Installed Probe : BBO 1H {X} – Z Gradient (PLEASE NOTE : The 19F capability […]
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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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TIPS – GETTING THE MOST OUT OF YOUR SHIMS – AV500 AS AN EXAMPLE
The majority of lock solvents used in our facility are fully deuterated i.e. 99.0% or more 2H enriched. This means that the Topshim system performs what is called ‘1D gradient shimming’ or ‘Z-axis only’ shimming. This leaves the job half-done when it comes to shim optimization. The XY-plane or ‘transverse plane’ shims also need adjusting, […]
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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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