UW CHEMISTRY NMR

Few of the users have noticed a spike ridden baseline in the past several days, mostly in 1H spectra, apparently.  Evidently this is a sporadic issue since not all of them have reported this.  As I speak, the spectrometer is giving clean 1H spectrum, as shown below :

 

Multiple causes can account for the observed spikes, that include instability in the room temperature or a circuit board sporadically overheating.  If it is similar to the latter, we have to wait till the issue ‘precipitates’ before we can identify the part responsible and repair it.

I will keep you posted of further observations.

NMR Facility Manager

8/27/2018