A bag loading means (87) is for loading and unloading at least one satellite bag (2, 3, 4) into and from the central compartment (34) of a rotor (32, 33, 34, 35) of an apparatus for separating a composite liquid into at least two components. The bag loading means (87) comprises an upper part comprising securing means (92) for removably securing an upper portion of at least one satellite bag (2, 3, 4) to the bag loading means (87) a lower part comprising a receptacle (96) for containing a lower portion of at least one satellite bag (2, 3, 4) and an intermediate part connecting the upper part to the lower part and exposing an intermediate portion of a satellite bag (2, 3, 4) having an upper portion secured to the upper part of the loading means (87) and a lower portion inserted in the receptacle.
