The invention concerns an NMR apparatus (1) comprising an NMR spectrometer (2) for sequential investigation of several samples in sample containers (6) of substantially identical geometrical design, at a measuring position (10) in the NMR spectrometer (2) comprising a supply line (8) for pneumatic supply of the sample containers (6) from a magazine (3) to the measuring position (10). The apparatus is characterized in that the magazine (3) is disposed within a temperature-controlled cabinet, in particular, a cold chamber (4) and the supply line (8) can be heated. This substantially increases the throughput of samples of the NMR apparatus (1) with simple technical means.