UW CHEMISTRY NMR
Announcments & Equipment Logs
AN IMPORTANT APPEAL ! – PLEASE TAKE NOTE
Dear Users ! With the weather turning colder and winter knocking on the door, the toasty environs of the NMR Lab (Bagley 037 and 033) perhaps offers a tempting invitation to cuddle up with a hot mug of coffee and a snack….I understand. Unfortunately, the regulations stipulate that there should be NO FOOD OR DRINKS […]
Posted in NMR Facility Usage | No Comments
ALERT ! AV301 : SYSTEM WILL BE OUT OF ACTION…FOR A DAY OR SO
Dear Users I have been receiving sporadic complaints that the Locking operation is not reliable as well as Topshim is giving ‘iffy’ results. I briefly looked at the issue this morning and I am also not very happy at the shim results. Since there are a few moving parts to this subtle problem (the failure […]
Posted in Hardware, Spectrometer | No Comments
UPDATE ! PHOENIX FTP SERVER IS BACK ON LINE ! …PLEASE TAKE NOTE
Dear Users Thank you for your patient waiting. The FTP server is revived and online. You can access data from GG500 and DRX200 as before. (The other hosts are there only as a backup, since you are accessing routine data from your UDRIVE storage. But they will also come online soon). Please contact me with […]
Posted in Uncategorized | No Comments
AV500 : TEMPORARY SAMPLE HANDLING GLITCH RESOLVED…
System back to normal. Lock system and other vitals are normal. NMR Facility Manager 10/21/22
Posted in Hardware, Spectrometer | No Comments
UPDATE ! AV300 – SYSTEM BACK IN ACTION…WITH THE ATMA PROBE !
Dear Users Despite my ominous message earlier about putting a backup probe in place with manual operations, I am glad to report that we managed to fix not only the ATMA probe in-house but also the original issue in the console electronics, which drove this venerable Probehead crazy. I have released the instrument for regular […]
Posted in Hardware, Probeheads, Spectrometer, Usage | No Comments
ALERT ! AV300 – SYSTEM DOWN DUE TO PROBE ISSUES
The ATMA Probe is repeatedly failing in both tuning/matching and gradient shimming parts. Though we will first attempt to find an in-house remedy for the above, the chances are slim that it will be successful, given the history of this probe. We will do what we can to provide a backup probe in the system, […]
Posted in Hardware, Spectrometer, Usage | No Comments
GG500 : UPDATE ON LOCKING – INCONSISTENCIES ADDRESSED
Dear Users Thank you for those of you who brought the following intermittent issue to my attention : Locking fails sporadically, but mostly on solvents with a weak lock signal, such as CDCl3. The autolock failure has been observed, sometimes after Topshim completes and at other times, even during initial locking attempts. The good news […]
Posted in Hardware, Spectrometer | No Comments
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 […]
Posted in Hardware, Spectrometer, Uncategorized, Usage | No Comments