Apparatus for forming plastic preforms into plastic containers with a transport device which transports the plastic preforms along a predefined transport path, wherein the transport device has a movable station carrier on which a plurality of forming stations are arranged, wherein these forming stations each have blow-moulding devices, each forming cavities within which the plastic preforms can be formed into plastic containers, and said blow-moulding devices are arranged on respective blow-mould carriers, wherein the apparatus has a clean room inside which the plastic preforms can be formed into the plastic containers, and this clean room is isolated from a non-sterile environment by means of at least one wall, wherein the apparatus has a change device which is suitable and intended for at least removing the blow-moulding devices from their blow-mould carriers and/or arranging blow-moulding devices on the blow-mould carriers, wherein this change device is integrated in a module which can be separated from the clean room, and the change device is arranged inside a lock room which can be brought into connection with the clean room of the forming device, wherein the module of the change device itself forms this lock room, and the change device is situated inside the lock room with further devices such as a magazine for blow-moulding devices, and the lock room can be isolated gas-tightly from a environment in order to be able to maintain sterile conditions inside this lock room, characterised in that the change device has an identification device in the form of an RFID detection device which serves for identifying blow moulds and/or blow-mould parts and at least one blow moulding device is an RFID element which can be read by the RFID detection device and the change device has control devices for controlling the change device and sensor elements are also provided which detect positions of the blow-moulding devices, or also allow control of the change device depending on such detected positions wherein the control device for the change device is in communication connection with control devices of the apparatus. wherein the apparatus has a change device which is suitable and intended for at least removing the blow-moulding devices from their blow-mould carriers and/or arranging blow-moulding devices on the blow-mould carriers, wherein this change device is integrated in a module which can be separated from the clean room, and the change device is arranged inside a lock room which can be brought into connection with the clean room of the forming device, wherein the module of the change device itself forms this lock room, and the change device is situated inside the lock room with further devices such as a magazine for blow-moulding devices, and the lock room can be isolated gas-tightly from a environment in order to be able to maintain sterile conditions inside this lock room, characterised in that the change device has an identification device in the form of an RFID detection device which serves for identifying blow moulds and/or blow-mould parts and at least one blow moulding device is an RFID element which can be read by the RFID detection device and the change device has control devices for controlling the change device and sensor elements are also provided which detect positions of the blow-moulding devices, or also allow control of the change device depending on such detected positions wherein the control device for the change device is in communication connection with control devices of the apparatus.