An intermediate product (1) for producing a plurality of prefilled dual chamber syringes or cartridges, comprising: - a support template (2) comprising a series of support seats； - a plurality of partially preloaded tubular containment bodies (3), each inserted in a respective support seat, each of the tubular containment bodies (3) extending between a first (4) and a second opening (5)； - a sterile container (20-23) in which the support template (2) and the plurality of tubular containment bodies (3) are sterilely enclosed； wherein the tubular containment bodies (3) comprise within them: - a first (6) and a second plug (7) arranged in such a way that they define between them in the tubular containment body (3) a first containment chamber (8) and adapted to slide inside the tubular containment body (3)； - a first liquid substance contained within the first containment chamber (8)； wherein: - the first plug (6) is separated from the first opening (4) in such a way that it defines between the first plug (6) and the first opening (4) a second containment chamber (9) that is empty and adapted to be filled with a second substance intended to be mixed within the containment body with said first liquid substance in order to reconstitute an injectable solution； - the sterile package (20-23) comprises a containment tray (20), and in which the support template (2) is housed within the containment tray (20)； - the containment tray (20) comprises an opening edge (25) and in which the sterile container (20-23) comprises a closing film (21) fixed flush with said edge (25) and resting on a portion end of said tubular containment bodies (3)； - the package (20-23) comprises a first sterile bag (22) containing the containment tray (20).Un producto intermedio (1) para producir una pluralidad de jeringas o cartuchos precargados de doble cámara, que comprende: - una plantilla de soporte (2) que comprende una serie de asientos de soporte； - una pluralidad de cuerpos tubulares de contenci
