40 Radiation sterilisation and plasma sterilisation of medical products; treatment of materials, namely radiation cross-linking of plastic, in particular thermoplasts, elastomers, thermoplastic elastomers and composite materials with electron and/or gamma and/or X-ray radiation; treatment of materials, namely radiation sterilisation, with electron and/or gamma and/or X-ray radiation, of medical products, in-vitro diagnostics, packing materials, raw materials, foodstuffs, folders, records, animal foodstuffs, antiques, medicines.