A high-pressure probe for high-resolution nuclear magnetic resonance1, 2

A probe for obtaining high-resolution proton NMR spectra with a Bruker WP-60 spectrometer at elevated pressures is described. The probe has been tested to 3.7 kbar, used between −10 and 80°C, and routinely gives a resolution of about 1 Hz. This probe is easily interchangeable with the commercial probe. We also describe a simple high-pressure sample tube made of inert materials.