Sterilization device for sterilizing packaging containers with electron beams, said sterilization device comprising at least one first electron beam emitter adapted for sterilization of at least the interior of the packaging container, and at least one second electron beam emitter adapted for sterilization of at least the exterior of said packaging container, wherein the interior sterilization of the packaging container is performed in that the first electron beam emitter and the packaging container are adapted to perform a relative movement in relation to each other, such that at least a portion of the first electron beam emitter, comprising an electron exit window, is received in the packaging container through an opening in the packaging container, and the exterior sterilization of the packaging container is performed in that the packaging container is adapted to pass an electron exit window of the at least one second electron beam emitter, wherein said sterilization device comprises a rotatable carrier to which the at least one first electron beam emitter is being arranged such that it is movable together with the carrier, and wherein it comprises packaging container conveying means adapted to convey the packaging container synchronously with the rotational movement of the carrier, keeping a longitudinal axis of the first electron beam emitter aligned with a longitudinal axis of the packaging container, wherein said sterilization device comprises two second electron beam emitters, arranged opposite each other in such a way that the packaging containers can pass in between them, wherein the two second electron beam emitters have their longitudinal centre axes parallel to each other, but wherein the two second electron beam emitters are positioned at least partly underneath the carrier and have their longitudinal centre axes inclined an angle in relation to the longitudinal axes of the first electron beam emitters and a centre shaft of the carrier. at least one first electron beam emitter adapted for sterilization of at least the interior of the packaging container, and at least one second electron beam emitter adapted for sterilization of at least the exterior of said packaging container, wherein the interior sterilization of the packaging container is performed in that the first electron beam emitter and the packaging container are adapted to perform a relative movement in relation to each other, such that at least a portion of the first electron beam emitter, comprising an electron exit window, is received in the packaging container through an opening in the packaging container, and the exterior sterilization of the packaging container is performed in that the packaging container is adapted to pass an electron exit window of the at least one second electron beam emitter, wherein said sterilization device comprises a rotatable carrier to which the at least one first electron beam emitter is being arranged such that it is movable together with the carrier, and wherein it comprises packaging container conveying means adapted to convey the packaging container synchronously with the rotational movement of the carrier, keeping a longitudinal axis of the first electron beam emitter aligned with a longitudinal axis of the packaging container, wherein said sterilization device comprises two second electron beam emitters, arranged opposite each other in such a way that the packaging containers can pass in between them, wherein the two second electron beam emitters have their longitudinal centre axes parallel to each other, but wherein the two second electron beam emitters are positioned at least partly underneath the carrier and have their longitudinal centre axes inclined an angle in relation to the longitudinal axes of the first electron beam emitters and a centre shaft of the carrier.