UW CHEMISTRY NMR

Announcments & Equipment Logs

Usage

PLEASE READ !! – DRX499 IS BACK ! – REFURBISHED AND REINCARNATED

It’s Here !  The refurbished DRX499 with an excellent magnet on TMC anti-vibration legs is ready and at your service ! Thank you for patiently watching and enduring my milling around with the guts of the DRX499 spectrometer exposed bare for months on end.  At long last, the refurbished unit is ready for you to […]

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UPDATE : NMR LOGIN BACK TO NORMAL – RESERVATION SYSTEM STILL HAS ISSUES

Users should be able to proceed as usual. The reservation server is still not functioning correctly, at least as far as I could test it from my office desktop. I will post an update on this as and when available. NMR Facility Manager 12/7/18

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UPDATE ! : NMR RESERVATION SYSTEM BACK TO NORMAL

Please let us know if you have issues reserving time for any of the instruments.  The tests so far produced desired results. NMR Facility Manager 12/3/18 10.32 am

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ALERT ! : NMR RESERVATION SYSTEM MALFUNCTION

We are aware that you are not able to reserve NMR time via the usual webpage front end. We are looking into the reservation server as we speak. I will post an update as soon as the problem is resolved.  If it turns out that the problem will take longer than 30 minutes resolve, we […]

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IMPORTANT NOTE : UPCOMING TRAINING ON MANUAL SHIMMING AND TUNE/MATCH

Currently, we have only two spectrometers equipped with the ATMA facility and Topshim functionality.  Decidedly, both these features take the drudgery out of routine NMR run, especially short ones. If you are someone who come to totally rely on these features for your NMR runs,  you do have to face the following cons : You […]

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AV700 and DRX499 UPDATE : PLEASE READ – SOLUTIONS TO SOLIDS TRANSITION – PLANS

The AV700 NMR spectrometer will be receiving a new Solid State MAS NMR probehead within the next few weeks.  I will announce the finer details of this piece of equipment later. Please note that, currently the instrument is transitioned to solid state NMR mode to confirm its functionality before the new probehead is installed and […]

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ANOTHER UPDATE ! AV500 : TOPSHIM IS STILL NOT RELIABLE

I apologize for jumping the gun and announcing that Topshim is working ok.  The latest I checked with a CDCl3 sample, I had poor signal to noise issues which I need to investigate further. Alas, for the present the shimming has to be done by hand, I am afraid.  But, I am planning to tackle […]

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UPDATE ! AV500 – TOPSHIM FUNCTIONALITY IS BACK

You can use the Topshim shimming routine on all deutero solvents as before.  We will keep a close eye to see if anything is compromised again but, tests thus far indicate that the functionality is back on track. Please post a message in the log as soon as you notice something amiss and thanks. NMR […]

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ALERT ! AV300 : X – CHANNEL MALFUNCTION

The X-channel i.e. 13C and 31P, etc. is not functional.  We have identified the most probable cause to be a faulty circuit board but it’s fix may take some time. Most probably a replacement unit will need to be obtained and that might take a few days. Since the 1H is the predominantly used nucleus […]

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UPDATE ! DRX499 – CURRENT STATUS

Since there is still quite a few loose ends to tie up before the merged 500 MHz console is declared open,  the existing DRX499 is back in operation as before. After this note, I will proceed directly to introduce the merged console to you, once it is confirmed to be functional in every respect. Thank […]

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