A portable centrifuge having a housing containing a rotational mechanism and a centrifugal container having a longitudinal axis. The rotational mechanism has a circuit including an electrical motor, a switch, and an internal electrical power source. The centrifugal container is operably connected to the rotational mechanism through the housing, and is rotatable about the longitudinal axis. The centrifuge is portable and is for single use.

An exchangeable separator insert is designed for insertion into stator magnets of the frame of the separator and includes a housing, which is stationary during operation and which is designed in the manner of a container that is closed except for one or more openings. A rotor is disposed within the housing and is rotatable about an axis of rotation, the rotor having a drum which has one or more openings. At least two rotor magnets are at two axially spaced points of the rotor to keep floating and rotatably support the drum within the housing during operation. For transport or installation, the separator insert is provided with one or more transport securing elements, which operate according to a magnetic principle of action, so that the drum, which freely floats during operation of the separator, is immovable or substantially immovable in the housing during transport or installation.