Lid (1) of a container for collecting organic liquids (100), which is designed to sealingly close a cup (101) of said container for collecting organic liquids (100), comprising a patient port (3) for connection to an aspiration tube for removing the organic liquids from a patient and vacuum port (2) for connection to a vacuum source connection tube (200); said vacuum port (2) being specifically formed such that it can be connected to a corresponding adapter (4) associable with an end of said vacuum source connection tube (200).