A magazine insert for a pneumatic tube conveyor capsule, for receiving sample tubes filled with bodily fluids, the magazine insert comprising:
- a magazine drum having a plurality of receiving chambers for the sample tubes which are arranged annularly about the longitudinal axis of the magazine insert, and each extends through the magazine drum in a direction axial to the longitudinal axis;
- a fastening unit which is pivotable about the longitudinal axis from a fastening position to a release position, wherein a sample tube arranged in the respective receiving chamber is held solely in a fixed position relative to the magazine drum by means of the fastening unit arranged in the fastening position;
- a slider which is arranged in the central recess of the magazine drum, and which is slidable in axial direction from a first functional position bidirectionally to a respective second functional position relative to the magazine drum;
- and
- a catch element which is fastened to the slider and extends in radial direction into a control cam of the fastening unit, and so a pivoting of the fastening unit from the fastening position to its release position can be effected by transferring the slider to its corresponding second functional position.