UW CHEMISTRY NMR

Announcments & Equipment Logs

June, 2016

NOTE : AV300 – PROBEHEAD HAS POSSIBLE ISSUES

We are aware of the inconsistency in tuning/matching the 1H channel for some users.  I will get to it as soon as I can. Since I am short staffed currently, I will request your patience while I line up this investigation in my list of todo things. NMR Facility Manager 6/30/16

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UPDATE ! AV300 IS BACK TO NORMAL

Please go ahead and make reservations. Unused time on both instruments due to the network issues, will be waived. NMR Facility Manager 6/20/16

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UPDATE ! AV500 IS UP AND READY. STILL WORKING ON AV300

AV300 will take a bit more time to be back on line.  Look for further update here.  

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ALERT ! AV500 AND AV300 DOWN DUE TO NETWORK ISSUES

We are looking into the network problems that is causing these two systems to fail login for users. It is possibly related to the UW IT authentication server and so it might take a while to fix.  Please stay tuned for updates. NMR Facility Manager 6/20/16

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NOTE : AV500 – VT system – OK for routine use

I am trying to satiate the possible curiosity of some of you who might be wondering what is the substance of  the ‘VT troubleshoot’ you have been observing on the calendar.  Observations show that, when we try data collection at extreme temperature limits such as +70 C,  the target temperature very slowly drifts down i.e. […]

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UPDATE ! AV300 – PROBE IS FIXED AND READY FOR REGULAR USE !

The broken glass components inside the probe has led to the tuning/matching issues, which is taken care of now.  If you had noticed difficulty in shimming in the past as well as a longer than usual pulse width, those are related to this internal mishap as well.   The system is tested to be stable and […]

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UPDATE ! AV301 : TXD PROBE IS IN PLACE AND READY FOR USE

The incoming probe is the one you are familiar with :  TXD 1H {19F, 13C} probe.  This probe has excellent lineshape characteristics and easy to shim. NOTE : You have to run ‘wobb’ command and then tune/match by hand, similar to what you do on AV300 and AV500 instruments. There is no automatic Topshim facility […]

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ALERT ! AV301 : PROBEHEAD DAMAGE – BACKUP PROBE CHANGE UNDER WAY

RF coils inside the PABBI probehead have sustained the brunt of shearing forces and the cause is not clear and being investigated.  The probe will be sent for repairs to Bruker, the manufacturer.   The backup probe that will go in place currently will be TXD-1H{19F,13C} triple resonance probe.  NOTE : THIS PROBE IS NOT AN […]

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ALERT ! AV300 – SYSTEM DOWN DUE TO PROBE ISSUES

The 1H channel tune/match is malfunctioning.  We will try to provide an alternative as soon as we can. Until further notice, the instrument is down.  Thank you for your cooperation. NMR Facility Manager 6/2/16

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ALERT ! AV301 : USER SAMPLE STUCK INSIDE

We will be doing the needful to safely eject the sample and bring the system to normal. Until further notice, the spectrometer cannot be used. Please look for updates on the issue later. NMR Facility Manager 6/2/2016

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