UW CHEMISTRY NMR
Announcments & Equipment Logs
May, 2018
ALERT ! AV700 USERS : IMMINENT PROBE CHANGE – Monday, 4 June ’18
The current 1H sensitive TXI-HCN probe will give way to the BBO-Z-gradient probe. This probe is optimized for X-nuclei but also capable of 1H observe. The probe swap will occur on Monday the 4th of June 2018 forenoon. After the preliminary checks, the system should be ready for regular use by noon. Please contact me […]
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UPDATE ! AV700 – SYSTEM BACK IN OPERATION – NEW BASE FREQUENCY ! PLEASE READ
The Lock system is back to normal. PLEASE NOTE THE FOLLOWING IMPORTANT CHANGE ! New System Base Frequency : 699.962448 MHz. This reconfiguration is needed to compensate for the long term loss of energy by the Supercon Magnet. How does this affect you ? If you simply open your existing data set and start copying […]
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ALERT ! 700 USERS – SYSTEM DOWN
The Lock system has developed an issue and we are still in the diagnostics stage. Until this is fixed, the instrument is not available for use. I will post any useful updates as it becomes available. Thank you for your understanding. NMR Facility Manager 5/16/2018
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UPDATE ! AV700 – BACK UP VT SYSTEM IS OPERATIONAL – WITH A LIMITED RANGE
The backup chiller is provided in the interim, with which you can reach about -10 C on the lower side and the high T limit remains as before. Further updates will be provided once we make progress on the original chiller problem. NMR Facility Manager 5/11/2018
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ALERT ! AV700 – SYSTEM DOWN DUE TO VT ISSUES
We will try to either revive or provide an alternative solution to the VT problem and release the instrument for use soon. Please wait further updates. NMR Facility Manager 5/11/2018
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UPDATE ! AV700 USERS – INSTRUMENT IS OPERATIONAL WITH SOLUTIONS NMR PROBEHEAD
The current probehead is TXI-1H {13C,15} with Z-gradient. The nominal VT range is -60C to +70C without any special care or considerations. The probehead is capable of reaching to a larger VT limits but there will be an accompanying reduction in the continuous NMR observation time to protect the magnet and shim electronics. Please contact […]
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UPDATE ! AV700 USERBASE : INSTRUMENT WILL MOVE TO SOLUTIONS BEFORE WEEKEND
Currently, we are testing the VT and chiller system. As per current estimates, by Friday we should be able to release the instrument with a solutions probe in place. Please wait for further update on this. NMR Facility Manager 5/1/2018
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