Chemical substances for analyses in laboratories, other than for medical or veterinary purposes; Biochemical catalysts; Chemical preparations for scientific purposes, other than for medical or veterinary use; Cryogenic preparations in solid, liquid or gas state for use in chilling and freezing; Carbonic hydrates; Chlorofluorocarbons; Diagnostic preparations, other than for medical or veterinary purposes; Biological preparations for use in industry and science; Chemical preparations for analyses in laboratories, other than for medical or veterinary purposes