The present disclosure relates to an agitator unit for use with a blood product storage system, wherein the agitator unit has a movable compartment to receive blood products and a drive for movement of the compartment. The drive of the agitator unit has at least one motor and a gear system with at least one planetary gear unit, wherein the planetary gear unit has at least one planet wheel, which is eccentrically movable by means of the motor, and a planet disc, wherein the planet wheel is connected to the compartment by means of a spigot and rolls on an internal periphery of the planet disc, wherein the spigot is adjustable in its relative position. In addition, the disclosure relates to a modular blood product storage system with an agitator unit.
