UW CHEMISTRY NMR
Announcments & Equipment Logs
Hardware
ALERT ! AV301 – SYSTEM DOWN DUE TO PROBEHEAD ISSUE
Hello All Many of you might have noticed and some of you have given feedback about the rather poor S/N on this system in the recent past. Especially, today people have noticed that ATMA is not working as expected. Further investigation shows that there is indeed a hardware issue with the probehead on the 1H […]
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UPDATE ! AV301 – SHIMMING ISSUES
Hello All A primary reason for the horrendous lineshape and difficulty in getting a decent shim-set on this instrument, of late, was due to a really dirty and grimy interior of the probehead i.e. the part where the RF coil wraps around the NMR sample tube, when you land the sample. This goopy resin sticking […]
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UPDATE ! AV500 – BACK IN ACTION !
Pneumatic system is working properly now i.e. both the Sample Lift and Sample Spin functions are behaving as expected. But, from the looks of it, I won’t be surprised if the problem recurs again. Of course, we shall keep a hawkish eye on the developments and swoop down to fix it asap, when that happens […]
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UPDATE ! AV301 – SYSTEM REVIVED FOR REGULAR USE
This is how the sample looked on top of the Probehead when User dropped it without spinner (WRONG !) _______________________________________________________ This is how it is SUPPOSED TO BE on top of the Probehead ( RIGHT !) Happy Friday ! NMR Facility Manager 2/28/20
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ALERT ! AV500 – SYSTEM DOWN…PNEUMATICS PROBLEM
Sample injection/ejection and spinning is not working. Not sure if this is a simple fix or a delayed one as I write this. Hunker down and wait for updates ! NMR Facility Manager 2/28/20
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ALERT ! AV301 NOT USABLE UNTIL TOMORROW…PLEASE READ
User has accidentally dropped a sample tube without the spinner turbine into the magnet. This means that the probehead has to be removed to remedy the situation, which will not happen until tomorrow morning. Until this is taken care of, the instrument is not usable. The reservation calendar should reflect this and we will update […]
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ALERT ! AV301 : IMMINENT PROBE CHANGE
The automatic tuning/matching part seems to be malfunctioning for the X-channel on this probe. We are planning to pull the probe out tomorrow afternoon i.e. Friday the 7th and see if its a quick fix. If this is not the case, then be prepared to say hello to the old fashion Broadband probe, that needs […]
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NOTE ! : DRX499 – (HOPEFULLY) USEFUL EMBELLISHMENT
Hello after a long break and Happy Wednesday and Happy New Year 2020 ! DRX499 Since we all still have to tune/match the TXO-19F,13C {1H} NMR probehead by hand by crouching under the magnet, we are throwing some light on the process. We have provided a corded LED lamp to light up the probehead space under […]
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UPDATE ! DRX499 – SYSTEM BACK TO NORMAL
Acquisition hardware issue has been resolved. System tested and back to normal. Please let me know, if it is otherwise. NMR Facility Manager 10/8/2019
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UPDATE ! AV500 – SYSTEM BACK TO NORMAL OPERATIONS
There are two updates to be highlighted here : AV500 is back to a three channel configuration after an (expensive) replacement of a failed circuit board. You can therefore plan {1H, X, Y} type experiments. The TBI-1H {13C,X} – Z gradient probe has been placed back in the magnet. This probe has a dedicated 13C […]
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