Nuclear Magnetic Resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic Resonance Spectroscopy (MRS), is a spectroscopic technique to identify mono-molecular organic compounds by observing local magnetic fields around atomic nuclei. Modern NMR techniques use liquid helium-cooled or cryogen free superconducting magnet for higher resolution as the results directly depend on magnetic field strength. Less expensive systems use permanent magnets and lower resolution.

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