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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Magn Reson Med. 2015 Oct 7;76(3):1007–1014. doi: 10.1002/mrm.26002

Figure 2.

Figure 2

Images 1-3 depict the steps to prepare the gaseous sample. A. 5-mm NMR tube containing 1-propanol-radical mixture B. Small magnetic stir bars C. Pure gas tank valve D. Glass syringe E. Sealed pressure vessel F. Sample tube valve G. Vessel pressure release valve H. Nitrogen/Air gas valve for pressurizing the vessel I. Pressure Gauge J. Liquefaction bath (ethanol/dry ice) K. Magnetic stirrer L. Small permanent magnet to retrieve the stir bars M. Liquid nitrogen bath. The panel on the right shows the phase trajectory on the phase diagram during the sample preparation.