Abstract: An apparatus for treating a particulate material comprising a container, which has a base, an upright wall, extending from bottom to top, and, in an upper region, a deflecting element, to deflect the material rising up along the wall in its direction of movement in such a way that it can return again to the base, it being possible for at least the wall to be driven in rotation about a vertical axis of rotation. In the upper region of the container there is at least one container element which can be driven in rotation in the same direction as the upright wall, but with lower rotational speed, about the vertical axis of rotation.

Abstract: A laboratory apparatus, in particular a magnetic stirrer (1) or a shaker, has a receptacle (2) for a stand rod (3), the receptacle being provided in a separate stand-rod holder (4) which can be fastened to the laboratory apparatus in such a way that it is adjustable and can be fixed into position. As a result, the stand rod (3) can be fixed at various locations on the apparatus, so that each of the accessory devices connected to it, in particular sensors, dosing devices, or tubes, can be better fixed in their desired position. In addition, several stand-rod holders (4) with one stand rod each can be fastened at various locations on the laboratory apparatus at the same time, so that even in the case of complex experimental set-ups there are sufficient fastening options available for the accessory devices.