UW CHEMISTRY NMR
Announcments & Equipment Logs
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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ALERT ! POSSIBLE NETWORK ISSUES SLOWING DOWN NMR COMPUTERS !
We are aware of the facility wide network slow down that makes login and regular use difficult. We are looking into it. Please wait for further update before you plan to start the runs. Your unused times will be waived of any charges. NMR Facility Manager 5/23/16
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UPDATE ! AV500 – GOOD OLD BBI PROBE IS BACK…
We have managed to fix the X-channel in house and also replaced broken parts where the sample resides inside the probehead. Since things look pretty good with the probe (see image of water suppression : BBI_Sucrose_ES_after_fix ) we are releasing the instrument for use with BBI probe in place. We will check a few more […]
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UPDATE ! AV500 – OPEN FOR USE AGAIN – NOTE PROBE CHANGE
Please note that the probe that has been pu in is the BBO with Z-gradient. General: Similar to the BBI probe, you use the rotary tool to tune 1H channel. For the X-channel i.e. 13C, 31P, etc., you use the slider tool. Please be gentle with both of them. If this probe breaks in short […]
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UPDATE ! AV500 – PROBE CHANGE TAKING PLACE
The BBI probe X-channel needs extensive troubleshooting to fix the tuning/matching problem outlined earlier. In its place, we have put the BBO probe as a surrogate. Since this is the first time this probehead is being used in this magnet, it might take longer than usual to prep the probe with optimal shims etc. We […]
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ALERT ! AV500 – PLANNED DISRUPTION NEXT MONDAY
The BBI probe is observed to have some grounding issues on the X-channel, that makes tuning/matching difficult when you run ‘wobb’. We will remove the probe to take care of this on the bench on Monday forenoon, the 2nd May ’16. I expect this to be a short operation. NMR Facility Manager 4/29/16
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UPDATE ! AV500 – SYSTEM RELEASED FOR USE
The probehead is fixed. We are yet to complete some temperature stability tests after the repair but this will be taken up tomorrow or later. As of now, users are invited to start using the instrument.
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