The invention relates to an injector containing a processor, a pump or a motorwithadvance for a piston, which is suitable for driving liquid out of a cartridge,a data storagedevice, a device for data transfer, wherein the processor is electronicallyconnected to thedata storage device, to a control unit for the pump or the motor, and to thedevice for datatransfer； wherein the injector is suitable for being connected to a containeror a cartridgefor fluid transfer, which container or cartridge contains a multiplicity ofdoses of aparenteral solution； wherein a data storage device is fixedly connected to thecontainer orthe cartridge； wherein the device for data transfer is suitable for readingout informationfrom the data storage device on the container or the cartridge； and wherein atleast onespecification in respect of the identity of the product stored in thecontainer or in thecartridge is stored in the data storage device on the container or thecartridge. Theinvention furthermore relates to a container or a cartridge, which contains amultiplicity ofdoses of a parenteral solution, wherein a data storage device is fixedlyconnected to thecontainer or the cartridge. The invention furthermore relates to
