The present invention provides a container for receiving the concentrate for hemodialysis, the container or pouch for containing the solid concentrate of the composition of the dialysis solution composition or a cartridge, and a connector, a pouch or a cartridge is closed by a connector , connector, extend completely through the connector and the filling channel intended to charge a solid concentrate in a pouch or a cartridge, a solution into a pocket or cartridge, - a means for introducing the forming fluid and extracted liquid obtained from the pouch or cartridge, these inlet and extraction means has at least one connection portion, the inlet and extraction is provided means for connecting them to the corresponding port on the dialysis machine is provided, to a vessel. Container of the present invention, the filling channel is closed by the stopper, the stopper, the dialysis solution composition of the second component or components and a storage tank for receiving a group, the internal side of the side surface and the reservoir of the stopper located in the container of It characterized in that, which is provided with means (131) for generating an exit opening in the reservoir is brought into contact.