Abstract: An identification system for medical sterile containers and mesh trays for accommodating medical instruments. The system includes one or more sterile containers, one or more mesh trays, and one or more identification plates. Each identification plate includes an interface. At least one counterpart interface is complementary to the interface and formed or arranged on each sterile container and each mesh tray. The interface and the counterpart interface are designed to retain at least one identification plate on one of the sterile containers or on one of the mesh trays.

Abstract: Spent potlining material contains spent potliner from aluminium electrolysis cells, and at least one hydrophobic binder. The hydrophobic binder being selected from wax, a waxlike compound or mixtures thereof. A method for producing a spent potlining material includes the steps of (a) providing spent potliner from aluminium electrolysis cells, (b) comminuting the spent potliner in at least one comminuting apparatus, (c) fractionating the spent potliner through a separating apparatus, (d) mixing the spent potliner with at least one hydrophobic binder, selected from wax, a waxlike compound or mixtures thereof, in a mixing apparatus, (e) portioning the mixture obtained in step (d), (f) withdrawing the spent potlining material The steps (b) to (d) are carried out in an inert gas atmosphere. Also, spent potlining material is used as fuel in power stations and also in connection with the production of mineral wool, cement and steel.