Device for transporting as well as for the precise positioning of a sample vial in a high-resolution nrm - spectrometer

摘要

A device for the transport of an elongated sample tube (8) into the measuring space (22) of an nmr - magnet system with a spinner which has an axial through bore, through which the sample tube, together with the rotating on a cushion of air into the measuring space and there relative to the vertical axis of the nmr - receiver coil system (9) is positioned, is distinguished by a nonslip manner of a collar and radially around the sample tube is attached around the fastening sleeve (17) which, in the operating position of the sample tube, by a terminating element on a horizontal abutment surface (18) in the bottom region to the inner side of a two-stage axial bore (20) of the spinner (7b) is flat, with the bore (20) in a first step in the upper region an inner diameter larger than the outer diameter of the fastening sleeve, in a second step in the bottom region of the spinner an internal diameter, which is smaller than the outside diameter of the fastening sleeve, but is greater than the outer diameter of the sample tube. Thus, with simple technical means and a transport device for nmr - measuring capillary be modified in such a way that the one hand, it is less critical than the known devices, and thus leads to less glass breaks.