[Question from NMRWiki Q&A forum] poor signal to noise on 1H-15N heteronculear NOE
poor signal to noise on 1H-15N heteronculear NOE
I have recently attempted to run a 1H-15N heteronuclear NOE experiment in vnmrj (700 rt probe) using the standard sequence that comes with biopack, the signal to nose im getting compared to my standard HSQC is significantly reduced, is this normal? I do not recall this being the case when I ran this previously on a bruker 600 with RT probe? is this normal or does this suggest something is miss set? Also in the no NOE experiment I get very broad noise in the centre of my spectrum/water line.
regards
Tom
nmrlearner
News from other NMR forums
0
11-01-2011 01:52 AM
[Question from NMRWiki Q&A forum] What is the optimal sample length with Shigemi tubes?
What is the optimal sample length with Shigemi tubes?
Our coil area length is 16 mm. Should we be making samples exactly 16 mm long in the Shigemi tubes for the best sensitivity (assuming that we are limited on amount of material)?
For example, we use D2O matched shigemi tubes for samples in 90/10 H2O/D2O. Is susceptibility matching affected by switch from D2O to H2O?
Thanks!
nmrlearner
News from other NMR forums
0
08-22-2010 02:30 AM
[Question from NMRWiki Q&A forum] How much benefit to expect from best NMR tubes?
How much benefit to expect from best NMR tubes?
Hello, how much benefit in resolution and signal-to-noise will we get when using 800 MHz rated tubes (on the 800 MHz instrument) vs 500+ MHz rated tubes?
Is it worth spending the extra money on ultra-high quality tubes for routine work at 800 MHz?
Thanks.