Patent ID: 6774634
Filing Date: 2004-08-10
Classification: G01R

Abstract:
A method of selecting sample tube-solvent pairs for performing nuclear magnetic resonance measurements, comprising:determining a first frequency shift introduced by a first sample into a resonant circuit of a nuclear magnetic resonance spectrometer, the first sample including a first sample tube containing a first sample solvent and a first compound of interest, wherein the first solvent has a first solvent dielectric constant and the first sample tube has a first effective sample tube dielectric constant; determining a second frequency shift introduced by a second sample into the resonant circuit of the nuclear magnetic resonance spectrometer, the second sample including a second sample tube containing a second sample solvent and a second compound of interest, wherein the second solvent has a second solvent dielectric constant different from the first solvent dielectric constant, and the second sample tube has a second effective sample tube dielectric constant different from the first sample tube dielectric constant; and selecting the first sample and the second sample for performing nuclear magnetic resonance measurements on the first compound of interest and the second compound of interest when the first frequency shift and the second frequency shift have a predetermined relationship.