High-resolution NMR spectroscopy allows statements to be made about the chemical structure of primarily diamagnetic compounds. At the IOM, we do not conduct our own research in the field of NMR spectroscopy, but rather support the activities of the other departments. At the institute we have a 600 MHz NMR spectrometer with a broadband probe head. In addition, a C,H,N triple probe head can be used. Routinely, ²⁹Si, ³¹P and ⁵¹V NMR experiments are carried out in addition to ¹H, ¹³C and 2D experiments. EPR spectroscopy is used to characterise paramagnetic species. At the institute we have an X-band EPR spectrometer. The samples can be cooled down to a minimum of 77 K. The sample spectrum ranges from paramagnetic lanthanoid complexes to radical polymer fragments and reactive oxygen species, which can be made accessible to EPR spectroscopy by means of spin traps.