CLOSURE ATTACHMENT

The invention relates to a closure attachment for a closure (3) for closing an opening of a container (1) for the storage and, optionally, incubation of a sample and for the removal of the sample or of a sample constituent. The closure (3) has a septum (4) which closes the opening. The closure attachment can be placed onto a neck-type extension (2) surrounding the opening of the container (1). The closure attachment is characterized by: - a sleeve-shaped adapter (6), which can be placed onto the closure (3) and which has a central cannula (10), one end of the cannula being designed to pierce the septum (4) and the other end of the cannula having a connecting piece (12); - a tubular reservoir (7) having connecting pieces (13, 14) at both ends; - a syringe filter (8) having connecting pieces (15, 16) at both ends; and - an injection port (9) having a connecting piece (17) at one end and having a septum (18) at the other end; wherein the adapter (6), the reservoir (7), the syringe filter (8) and the injection port (9) are tightly connected to one another in succession by means of the connecting pieces (12, 13, 14, 15, 16, 17).