Patent ID: 7518371

Claim:
A MAS (magic angle spinning) NMR (nuclear magnetic resonance) apparatus or a HR (high resolution) MAS-NMR apparatus with automatic sample supply by a supply unit of an automatic sample preparation station, the apparatus comprising: a rotor storage structured to accommodate several rotors for receiving sample material soaked with NMR solution; a cap storage structured to accommodate several caps, wherein each cap is suited for closing a rotor, each cap having a central axial bore; means for accommodating several movable pins, each pin being insertable into the central axial bore of a cap to close the bore in an inserted state; and a cap handling unit having means for gripping a cap from said cap storage and for disposing the cap onto a rotor, a plunger for inserting a pin into the bore of a cap, and a suctioning device for suctioning excess NMR solution that escapes from the bore.