9 Scientific, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; laboratory apparatus, namely, computer, data processing equipment, electronic display boards, measuring machines, apparatus and instruments for physics for use in laboratory research, institutes, industry, universities, the clinics and for use in the scientific area as well as in clean rooms, especially apparatus for decanting of gases and/or liquids, preferably of explosions hazardous and/or health hazardous substances or solvents; special laboratory furniture, especially experimental tables, laboratory cabinets, projection walls, for scientific laboratories, clean rooms, research rooms and/or for classrooms for natural science included in this class, in particular for decanting of gases and/or liquids; special clothing for laboratories; laboratory trays; gas testing instruments; air analysis apparatus; life saving apparatus and equipment; oxygen decanting apparatus; projection screens; laboratory furniture; projection table laboratory furniture; tables for laboratory experiments