scientific apparatus, namely laser particle counters; electric and electronic measuring units, namely laser particle counters; pressure, humidity, temperature and air flow controllers; electric and electronic signalling units, namely hygrometers, quantity indicators, namely airborne contaminants indicators, thermostats, pressure indicators for indicating the pressure level in cleanrooms, humidity indicators, namely humidistats; air flow indicators, for indicating the air flow level and velocity in cleanrooms; transmitters for electric and electronic signals, namely alarm bells, alarm signals and alarm sirens; electric and electronic loss indicators, namely pressure gauges, humidity gauges, temperature gauges, air circulation and velocity gauges; air leakage indicators for indicating air flow level and velocity drops in cleanrooms; electric and electronic checking or surveillance units, namely laser particle counters; quantity controllers; temperature controllers; pressure controllers; humidity controllers; air flow controllers; monitors; sensors; smoke detectors; anti-interference units, namely atmospheric pollutant detectors; electric and electronic installations for the remote control of industrial operations, namely computers, central processing units, computer keyboards, printers for use with computers, control panels, monitors, patchboards and distribution boards; control panels and observation instruments, namely optical-electronic devices for counting airborne contaminants, wave recorders, vibrographs; life-saving units, namely fire extinguishers, electric and electronic precision measuring units, namely laser particle counters; time recorders; sound and vibration recorders; air analysis units, namely airborne contaminants detectors; intercommunication units, namely cameras; interphones; intercoms; telephone transmitters; telephone apparatus, namely telephones; units for the removal of dust, namely dust collector units for use in cleanrooms; audio and video recorders, transmitters and players and devices for reproduction of the same; furniture especially made for laboratories, namely laboratory trays; magnetic coded identity cards, vacuum cleaners, electric door openers, electric door closers, computers, data processing equipment, namely central processing units; recorded computer programs for use in connection with cleanrooms' management; recorded magnetic data carriers, namely tapes and disks featuring temperature, pressure, humidity and air flow controls in cleanrooms; ventilation hoods for laboratories

lighting units, namely lamps, laboratory lamps, light bulbs, light diffusers; heating units, namely air and water heaters; refrigeration units, namely refrigerant heat coils; refrigerant piping; air and water chiller condensers; air cooling installation; cooling installations for water; drying units, namely air dryers; ventilation units, namely fans and fan cabinets; units for sanitary purposes, namely dust exhausters; units for obtaining clean air in cleanrooms; air purifying units, namely devices and machinery for the disinfection of air in cleanrooms; air conditioning devices; air conditioners; air filtering facilities; filters for air conditioning devices; dust collector units for industrial purposes; heat exchangers, namely devices and machinery for providing adjustable temperature to and from cleanrooms