UW CHEMISTRY NMR
Announcments & Equipment Logs
Usage
AV500 : IMPORTANCE OF TOUCHING UP THE X,Y SHIMS
Dear Users Way back, I had highlighted the importance of touching up the so-called transverse shims a.k.a. X and Y shims, AFTER you have completed the Topshim command. I had shown a real-life example of the difference this simple step makes in getting a well resolved and great spectrum. Here is a link to that post […]
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AV301 : SYSTEM READY FOR USE WITH SURROGATE BBI PROBE
Dear Users The regular probe with a faulty ATMA motor assembly is pulled out for repairs. Do not underestimate the probe that is placed in the magnet as a backup, because it is called Surrogate. This is a newly procured “gently used probe” in excellent condition and gives beautiful spectra as I show below. […]
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AV500 : PLEASE NOTE THE TEMPORARY PROBE SWAP
Dear Users We swapped the probe today to BBO as a one time process to access a rare nucleus. Those of you who will use the instrument over the weekend, please note that, this a BBO Probe that includes 1H and X-nuclei coverage, that includes 13C. What you WON’T have is 19F capability. We will […]
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UPDATE ! AV300 – IS BACK TO NORMAL OPERATION – PLEASE BOOK TIME AS NEEDED
Dear Users The two seemingly small, but pesky problems have been sorted out, with our recent computer maintenance operations: You can comfortably “Drag and Drop” your datasets onto the ‘blue’ screen area, without freezing the screen now. In the login screen, when you type your password, it NO LONGER truncates it on its own and […]
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UPDATE ! BAGLEY ELECTRICAL SYSTEMS and NMRs UP
Dear Users All but one of the NMR systems as well as the FTP server phoenix have been revived after the Electrical System disruption. AV300 This system is not usable immediately, and this is not related to the power outage. An ongoing issue with the computer authentication software is preventing us from using it. We […]
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UPDATE ! AV301 : PROBE SWITCHED TO TXD-1H (13C,19F) – NO GRADIENTS
Dear Users As I announced last week, the ailing ATMA probe has been pulled out and in its place, the good old TXD probe is placed and primed up. This probe has three dedicated channels for 1H, 13C and 19F. THIS IS NOT A BROADBAND PROBE ! This means that you cannot observe anything other […]
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UPDATE ! AV500 – SYSTEM IS BACK TO NORMAL – WITH AN IMPORTANT REMINDER
Dear Users There was a network disruption between the computer and console, leading to a temporary failure of the system this morning. This has been since resolved and all the vital signs of the instrument looks good. PLEASE REMEMBER : But here is an important reminder to all users in the proper handling of the […]
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ALERT ! AV301 – SYSTEM DOWN DUE TO SAMPLE HANDLING PROBLEM
A user sample has broken inside the magnet and the sample Lift function is compromised. I will post an update once the broken sample is removed and the function tested to be normal again. NMR Facility Manager 10/28/2021
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NOTE ON GG500 : TBI PROBE (RE)INTRODUCED !
Dear Users Many of you might recall the look and feel of this Triple Resonance TBI probe when it was placed with the AV500 system, before GG500 was born. It won’t hurt to have a refresher and familiarize oursleves with this probe, which is now paired with GG500 console. 1H NMR : The picture below […]
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UPDATE ! AV301 : SAMPLE LANDING AND SPINNING ISSUES RESOLVED !
Hello Users ! We have done a ‘deep cleaning’ of the sample handling system yesterday and the results speak for themselves. The sample lands properly and it is detected correctly by the system. The Sample Spinning settles to its target rate pretty quickly now. We also have shimmed up the system and so it should […]
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