Longer pulse length for conducting samples?

3 0 5k
answers votes views
Hi, my 1H 90 deg pulses are always longer when I work with my samples that are electrically conducting. Is this a/the re...
Posted: Santhosh 1 / Updated: glass lizard 31 Aug 12 '12 at 12:24

Chemical shift evolution compensation for delays flanked by hard or soft pulses

0 1 1k
answers votes views
Hello all, In a typical 2D experiment, the delay "d0" (t1 increment delay in Bruker) is compensated for the chemical sh...
Posted: Jana 31 Aug 02 '12 at 10:33

Observing protein-ligand interaction using weakly soluble compounds

1 0 8k
answers votes views
I am trying to setup an experiment using HSQC with titration of a compound to determine the Kd of the protein-ligand int...
Posted: Patrick Bartlow 1 / Updated: Justin Frank 1 Jun 29 '16 at 19:39

Does anybody know techmag spectrometers?

1 0 3k
answers votes views
Hi, Techmag (http://www.tecmag.com/index.html) argues to have quite good spectrometers (redstone, discovery 3, scout .....
Posted: fid 139 / Updated: Jeffreyyyy 1 Feb 27 '15 at 12:32

Spectral Binning

0 0 2k
answers votes views
Hey all-- I've noticed that many metabolomics papers use principal components analysis of the data, involving spectral ...
Posted: DVigneault 3 Jul 23 '12 at 13:47

centrifuge or porous-plate

0 0 1k
answers votes views
centrifuge or porous-plate; which of these techniques is better for estimation of T2 cut-off in NMR core measurements ...
Posted: jk 1 Jul 19 '12 at 03:03

How long is too long a pulse?

3 0 4k
answers votes views
I recently calibrated the 90 for 11B on a Agilent 400MR. The 1H 90 was about 6.8us at 59dB... It turns out to be 22.6u...
Posted: Javaslinger 53 / Updated: Thomas barbara 11 Oct 16 '12 at 15:36

How to set up an instrument for 11B NMR?

1 0 4k
answers votes views
Ok, on this particular Agilent MR400 we have a OneProbe with a ProTune module. It's presently set up and calibrated for...
Posted: Javaslinger 53 / Updated: jkurutz 131 Jul 19 '12 at 05:54

Chenomx Libraries

1 0 3k
answers votes views
Hey all-- I've been using Chenomx Suite for metabolomics research. Chenomx allows the user to create custom compounds ...
Updated: DVigneault 3 Jul 19 '12 at 13:37

Locking in new solvent

2 0 7k
answers votes views
Hello, I am trying to determine solution structure of a peptide in 50% trifluoroethanol(TFE) solution. I dissolved my p...
Posted: GlennG 1 / Updated: JohnW 1 Jul 16 '12 at 15:18
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