A primary packaging (1) for a liquid comprising, in particular, an at least partially collapsible container (2) and a connector element (3) for connection of the primary packaging (1) to a withdrawal device. The connector element (3) has at least one connector channel (4) which is in fluid communication with an interior space (5) of the container (2). The container (2) is composed at least partially of a foil (6) which is constructed from a first layer which, during intended use of the primary packaging (1), comes into direct contact with the liquid. Both the first layer (7) and the connector element (3) are composed of a plastics material comprising at least one cyclic olefin polymer.
