UW CHEMISTRY NMR

The Lock resonance was set to a wrong Field value leading to no observable signal even though all the indications would have made you feel that there is no hardware problem anywhere.  The problem is rectified and you shouldn’t have any issues with acquisition.  If anyone is curious to learn more on the problem, please […]

The ATMA  BBI probe that is capable of computer controlled tuning/matching will take the place of the current TXD-19F probe. The probe should be ready for regular use by 4.00 pm, Tuesday the 7th of September i.e. tomorrow.  All the TOPSPIN user interfaces will have the Auto Wobb button that will help you automatically tune […]

The topspin environment is functional with the spectrometer, running on the new computer.  Compilation of Topspin automation scripts is not yet up and running and this will be addressed in the coming days.  But the spectrometer is usable in a normal fashion. Please keep the facility staff updated if you notice anything worthwhile.  If your […]

After creating a dataset of choice, users can simply enter the macro fluorine  to invoke the default 19F parameter set that includes  1H decoupling. Please remember to adjust O1P to your required offset to observe 19F signal.    Included below is a sample 19F spectrum.  Blue spectrum is with 1H decoupling and the Red spectrum is without 1H […]

System is tested to work fine.  Here is a solvent suppression snapshot done on the dummy sample i.e. 1:1 H2O+D2O.

It appears the storms this morning caused some fluctuations in the electrical and gas lines to the NMR spectometers leading to issues with the consoles, as is being reported to the facility by users using the error logbooks currently. For the time being, please consider the NMR spectrometers offline until an NMR Facility Manager can […]

Users had noticed that the lineshape on this instrument has been rather poor.  This is primarily due to the fact that the magnet is still taking its own time to settle down after the cryoshimming and B0 field adjustment approximately a month ago. Supercon Magnets are notoriously unpredictable when it comes to their expected duration […]

Facilities and services has announced a 2 hour window of compressed air disruption from 5.00 am to 7.00 am on Wedensday, 25th June ’14.  The walk-on users won’t be affected by this event but those who want to plan overnight runs should take note that the VT system will be non-functional during this event.  Please […]

Topshim automatic shimming can be used now on all solvent types.  You can use the following two methods to access this feature : Type topshim gui and bring up the Topshim Graphical User Interface.  If you have correctly locked on the solvent, the system will automatically optimize shims based on your lock solvent.  You just […]