UW CHEMISTRY NMR

Dear Users

I managed to get hold of six sample tubes of same compound in CDCl3, (thanks to the kind help from Chem Lab Techs, David and Lance) to test the Topshim consistency.

In my experience, the shimming is consistent and reliable.  Below is a snapshot of the aliphatic region from all the six samples after shimming, to give you a feel.

 

my2c tip of the day : 

  As part of the testing,  I rigged up a simple automation script called “quickrun”.   If you happen to start from an empty dataset from your earlier data,  you can simply run ‘quickrun’ on the command line.  It will do everything including, locking, atma, shimming, RGA, Acquisition, Processing with baseline correction. Might find it handy.   It will also give you a Topshim report card like this, giving you the confidence that the shimming worked.  (Look at the Results: part closely)