Rotor and centrifuge using same

A rotor in a centrifuge, the centrifuge comprising:

• the rotor in a cylindrical shape for separating a sample;
• a centrifuge chamber in which the rotor is accommodated;
• and
• a drive device that rotates the rotor;
• and a sample line that continuously supplies and discharges the sample to and from the rotor during rotation of the rotor, wherein
• the rotor is composed of:
• a rotor body in a cylindrical shape;
• a core body that forms a path of the sample by being arranged in the rotor body;
• and
• a fin capable of being attached to and detached from the core body to divide an inside of the rotor body into a plurality of spaces to separate the sample, wherein
• the core body is formed with a fin mounting groove for attaching the fin, and
• the fin is formed to comprise an attachment part in a shape corresponding to the fin mounting groove and a protruding part protruding to a radially outer side from the fin mounting groove, and a volume of a centrifugal separation space between the core body and the rotor body is changeable by extending the protruding part in a circumferential direction of the rotor beyond a forming range of the fin mounting groove.