The invention relates to a blood plasma bottle to which means for connection of hoses (7, 8) are provided and a neck at one end (2). The neck (2) ends in a bottle neck surface (3), in which an opening (4) is provided. The opening (4) by a pin (5) is surrounded, which is provided with two locking cams (51) which serve for fastening a connector (6) provided with slots (62) with the latching cam (51) correspond.