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, guard devices for lighting; heating units; namely, air and water heaters; heat piping; refrigeration units; namely, refrigerant heat coils; refrigerant piping; air and water chiller condensers; refrigeration controllers; air cooling installation; cooling installations for water; drying units; namely, air dryers; ventilation units; namely, fans and fan cabinets; water supply units; namely, water supply installations; water cooled units; water tubing; regulating accessories for water pipes; safety accessories for water pipes; namely, pipes' collars; 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