Abstract: A queue of samples for NMR analysis is disposed within a thermally isolate NMR magnet bore and distal elements of the queue approach thermal equilibrium concurrently with NMR analysis of a sample within the sensitive volume. In one embodiment, a sequence of NMR sample cells within a barrel coaxial with a vertical bore NMR spectrometer are maintained at a selected temperature by a heated gas and the queue of sample cells advances to the analytic position under gravity when the lowest sample cell is displaced from the queue in response to an end-of-analysis signal generated by said spectrometer.

Abstract: Improved solvent suppression in NMR data is achieved using pulse sequences wherein each of a series of selective excitation pulses are followed by a magnetic gradient pulse and a delay, where the magnetic gradient pulse amplitudes monotonically decrease by a selected fraction of the preceeding gradient pulse. Decoupling a second nucleus during selective excitation pulses has been shown to be efficacious for suppression of organic solvents.