A benchtop NMR with a cryogen-free permanent magnet that can obtain NMR spectra for both 1 H and 13C nuclei, allowing for the routine structural elucidation of small molecules and polymers. The probe must have an adjustable temperature control up to 60°C The field strength of the magnet must be at least 1.4 T or have an operating proton frequency at a minimum of 60 MHz The magnet must be ‘permanent’, meaning that it is cryogen free. The permanent magnet must not require liquid nitrogen nor liquid helium nor water cooling nor additional venting to operate Probe(s) within the NMR must be able to acquire multinuclear spectrum Probe(s) must be able to acquire spectra from 1H, 19F and 13C nuclei The 1H resolution of the probe must be less than 0.4 Hz (@50% signal height) The spectral window must be over the range of δH −5 to +15 ppm (relaƟve to (CH₃)₄Si in CDCl₃) for 1H spectra The spectral window must be over the range of δF +100 to -250 ppm (relative to CCl₃F) for 19F spectra The spectral window must be over the range of δC 0 to +200 ppm (relative to (CH₃)₄Si in CDCl₃) for 13C spectra The probe(s) within the NMR must be able to have a 1 H sensitivity (1% ethyl benzene in CDCl3) of a minimum of 160:1 (SNR) The instrument must have an automated and/or manual shimming for the magnet Shimming must be verified by software The instrument must utilize standard sample tubes, consisting of 5 mm OD and 7 inches long. The instrument must have an external frequency lock The instrument must not require deuterated solvents for frequency locking The instrument must have an adjustable temperature that operates in the range of 25°C-to-60°C.
