A connector for connecting a container with a fluid preparation device for preparing a fluid, in particular a container with a concentrate for the preparation of dialysis fluid, as well as the combination of the connector, the corresponding container and the fluid preparation device. In order to simplify the handling during both the manufacturing process of such containers and the connection of such containers to the fluid preparation devices, the connector connects a first and second fluid line of the container with a third and fourth fluid line of the fluid preparation device with two laterally spaced-apart mounting elements which each incorporate one of two orifices terminating the first and second fluid lines.