A first aseptic coupling device for coupling to a second aseptic coupling device, the first aseptic coupling device comprising: a. a first main body defining a front face and a first fluid passage therethrough; b. a first connecting feature disposed on the first main body configured to couple the first aseptic device to the second aseptic coupling device; c. a first sealing member received at least partially within the first main body; and d. a first membrane removably coupled to and at least partially covering the front face of the first main body and the first sealing member, being characterised in that the first aseptic coupling device further comprises: e. a first protective cover removably connected to the first main body and to the first membrane, wherein the first main body is also provided with a pair of hinge members (128, 130) for retaining a corresponding hinge member on the first protective cover, the first protective cover being rotatable about the first hinge member between a closed position, in which the protective cover covers at least a portion of the first membrane covering the first main body's front face, and an open position, in which the first membrane covering the front face of the first main body is exposed; f. wherein removal of the first protective cover away from the first main body in a direction parallel to the front face causes the first membrane to be removed from the front face. a. a first main body defining a front face and a first fluid passage therethrough; b. a first connecting feature disposed on the first main body configured to couple the first aseptic device to the second aseptic coupling device; c. a first sealing member received at least partially within the first main body; and d. a first membrane removably coupled to and at least partially covering the front face of the first main body and the first sealing member, being characterised in that the first aseptic coupling device further comprises: e. a first protective cover removably connected to the first main body and to the first membrane, wherein the first main body is also provided with a pair of hinge members (128, 130) for retaining a corresponding hinge member on the first protective cover, the first protective cover being rotatable about the first hinge member between a closed position, in which the protective cover covers at least a portion of the first membrane covering the first main body's front face, and an open position, in which the first membrane covering the front face of the first main body is exposed; f. wherein removal of the first protective cover away from the first main body in a direction parallel to the front face causes the first membrane to be removed from the front face. e. a first protective cover removably connected to the first main body and to the first membrane, wherein the first main body is also provided with a pair of hinge members (128, 130) for retaining a corresponding hinge member on the first protective cover, the first protective cover being rotatable about the first hinge member between a closed position, in which the protective cover covers at least a portion of the first membrane covering the first main body's front face, and an open position, in which the first membrane covering the front face of the first main body is exposed; f. wherein removal of the first protective cover away from the first main body in a direction parallel to the front face causes the first membrane to be removed from the front face.