Scientific, nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; sensors and monitors, sound attenuators, analog and digital controllers, power supplies and variable speed drives; abacuses; accounting machines; accumulators, electric; acid hydrometers; acidimeters for batteries; acoustic [sound] alarms / sound alarms; acoustic conduits; acoustic couplers; actinometers; adding machines; aerials; aerometers; air analysis apparatus; alarm bells, electric; alarms; alcoholmeters; alidades; altimeters; ammeters; amplifiers; amplifying tubes / amplifying valves; amusement apparatus adapted for use with television receivers only; amusement machines, automatic and coin-operated / slot machines, automatic; anemometers; animated cartoons; anode batteries / high tension batteries; anodes; answering machines; anticathodes; anti-dazzle shades / anti-glare visors; anti-glare glasses; anti-interference devices [electricity]; anti-theft warning apparatus; apertometers [optics]; apparatus and instruments for astronomy; apparatus and instruments for physics; apparatus for changing record player needles; apparatus for fermentation [laboratory apparatus]; apparatus for games adapted for use with television receivers only; apparatus for measuring the thickness of skins; apparatus to check franking / apparatus to check stamping mail; appliances for measuring the thickness of leather; armatures [electricity]; asbestos clothing for protection against fire; asbestos gloves for protection against accidents; audio-- and video-receivers; audiovisual teaching apparatus; automatic indicators of low pressure in vehicle tires [tyres] / automatic indicators of low pressure in vehicle tyres / automatic indicators of low pressure in vehicle tires; azimuth instruments; balances [steelyards] / lever scales [steelyards] / steelyards [lever scales]; balancing apparatus; bar code readers; barometers; batteries for lighting; batteries for pocketlamps / batteries for pocket lamps; batteries, electric; batteries, electric, for vehicles / accumulators, electric, for vehicles; battery boxes / accumulator boxes; battery chargers; battery jars / accumulator jars; beacons, luminous; bells [warning devices]; betatrons; binoculars; blueprint apparatus; boiler control instruments; branch boxes [electricity]; breathing apparatus for underwater swimming; breathing apparatus, except for artificial respiration; bullet-proof waistcoats [vests (Am)] / bullet-proof waistcoats / bullet-proof vests (Am); buzzers; buzzers, electric; cabinets for loudspeakers; cables, electric; calculating disks; calculating machines; calibrating rings; calipers; camcorders; cameras [photography]; capacity measures; capillary tubes; carpenters' rules; carriers for dark plates [photography]; cases especially made for photographic apparatus and instruments; cases fitted with dissecting instruments [microscopy]; cash registers; cassette players; cathodes; cathodic anti-corrosion apparatus; cell switches [electricity] / reducers [electricity]; centering apparatus for photographic transparencies; chargers for electric batteries; chemistry apparatus and instruments; chips [integrated circuits]; choking coils [impedance]; chromatography apparatus for laboratory use; chronographs [time recording apparatus]; cigar lighters for automobiles; cinematographic cameras; cinematographic film [exposed]; circuit breakers; circuit closers; cleaning apparatus for phonograph records / cleaning apparatus for sound recording discs; clothing for protection against accidents, irradiation and fire; clothing for protection against fire; coils, electric; coin-operated gates for car parks or parking lots / coin-operated gates for car parks; coin-operated mechanisms for television sets; collectors, electric; commutators; compact disc players; compact discs [audio-video]; compact discs [read-only memory]; comparators; compasses [measuring instruments]; computer keyboards; computer memories; computer operating programs, recorded / computer operating programs recorded; computer peripheral devices; computer programmes [programs], recorded; computer software [recorded]; computers / laptop computers; condensers [capacitors] / capacitors; conductors, electric; connections for electric lines; connectors [electricity]; contact lenses; contacts, electric; contacts, electric, of precious metal; containers for contact lenses; containers for microscope slides; control panels [electricity]; converters, electric; copper wire, insulated; correcting lenses [optics]; cosmographic instruments; counterfeit [false] coin detectors / false coin detectors; counters / meters; couplers [data processing equipment]; couplings, electric / connections, electric; crucibles [laboratory] / cupels [laboratory]; current rectifiers; cyclotrons; darkroom lamps [photography]; darkrooms [photography]; data processing apparatus; decompression chambers; demagnetizing apparatus for magnetic tapes; densimeters; densitometers; detectors; diagnostic apparatus, not for medical purposes; diaphragms [acoustics]; diaphragms [photography]; diaphragms for scientific apparatus; dictating machines; diffraction apparatus [microscopy]; directional compasses; discharge tubes, electric, other than for lighting / electric discharge tubes, other than for lighting; disk drives [for computers]; disks [magnetic]; distance measuring apparatus; distance recording apparatus / apparatus for recording distance; distillation apparatus for scientific purposes; distribution boards [electricity]; distribution boxes [electricity]; distribution consoles [electricity]; distribution machines, automatic / vending machines; divers' apparatus; divers' masks; diving suits; door closers, electric; door openers, electric; dosage dispensers / dosimeters; drainers for use in photography / photographic racks; dressmakers' measures; drying apparatus for photographic prints; drying racks [photography]; ducts [electricity]; dynamometers; earplugs for divers; editing appliances for cinematographic films / apparatus for editing cinematographic film; egg-candlers; electric apparatus for commutation; electric arc cutting apparatus; electric arc welding apparatus; electric devices for attracting and killing insects; electric door bells; electric installations for the remote control of industrial operations; electric loss indicators; electric welding apparatus; electrical apparatus for sealing plastics [packaging]; electricity conduits; electrified rails for mounting spot lights; electro-dynamic apparatus for the remote control of railway points; electro-dynamic apparatus for the remote control of signals; electrolysers; electromagnetic coils; electronic agendas; electronic notice boards; electronic pens [visual display units]; electronic pocket translators; electronic tags for goods; electroplating apparatus; elevator operating apparatus / lift operating apparatus; encoded cards, magnetic; enlarging apparatus [photography]; epidiascopes; ergometers; exposure meters [light meters]; extinguishers / fire extinguishing apparatus; eyeglass cases / pince-nez cases; eyeglass chains / pince-nez chains; eyeglass cords / pince-nez cords; eyepieces; eyeshades; facsimile machines; film cutting apparatus; films, exposed; filters [photography]; filters for respiratory masks; filters for ultraviolet rays, for photography; fire alarms; fire beaters; fire blankets; fire boats; fire engines; fire escapes; fire hose nozzles; flash-bulbs [photography]; flashing lights [luminous signals] / blinkers [signalling lights]; flashlights [photography]; flat irons, electric; floppy disks; fluorescent screens; fog signals, non-explosive; food analysis apparatus; frames for photographic transparencies; frequency meters; fuel dispensing pumps for service stations; furnaces for laboratory experiments / ovens for laboratory experiments; furniture especially made for laboratories; fuse wire / wires of metal alloys [fuse wire]; fuses; galena crystals [detectors]; galvanic batteries; galvanic cells; galvanizing apparatus; galvanometers; garments for protection against fire; gas testing instruments; gasoline gauges / petrol gauges; gasoline pumps for service stations / petrol pumps for service stations; gasometers; gauges; glass covered with an electrical conductor; glazing apparatus for photographic prints; gloves for divers; gloves for protection against accidents; gloves for protection against X-rays for industrial purposes; grids for batteries; hair-curlers, electrically heated; head cleaning tapes [recording]; heat regulating apparatus; heliographic apparatus; hemline markers; high-frequency apparatus; holders for electric coils; holograms; horns for loudspeakers; hydrometers; hygrometers; identification sheaths for electric wires; identification threads for electric wires; identity cards, magnetic; igniting apparatus, electric, for igniting at a distance / electric apparatus for remote ignition; incubators for bacteria culture; indicators [electricity]; inductors [electricity]; instruments containing eyepieces; integrated circuit cards [smart cards] / smart cards [integrated circuit cards]; integrated circuits; intercommunication apparatus; interfaces [for computers]; inverters [electricity]; invoicing machines; ionisation apparatus, not for the treatment of air; jigs [measuring instruments]; juke boxes [for computers]; juke boxes [musical] / coin-operated musical automata [juke boxes]; junction boxes [electricity]; junction sleeves for electric cables; kaleidoscopes; knee-pads for workers; laboratory trays; lactodensimeters; lactometers; lasers, not for medical purposes; lens hoods; lenses for astrophotography; letter scales; levelling instruments; levelling staffs [surveying instruments] / rods [surveying instruments]; levels [instruments for determining the horizontal]; life belts; life buoys; life jackets; life saving apparatus and equipment; life-saving rafts; light dimmers [regulators] [electric] / light regulators [dimmers] [electric]; lightning conductors [rods] / lightning conductors / lightning arresters; limiters [electricity]; locks, electric; logs [measuring instruments]; loudspeakers; magic lanterns; magnetic data media; magnetic encoders; magnetic tape units [for computers]; magnetic tapes; magnetic wires; magnets; magnifying glasses [optics]; make-up removing appliances, electric; marine compasses; marking buoys; marking gauges [joinery]; masts for wireless aerials; material for electricity mains [wires, cables]; material testing instruments and machines; mathematical instruments; measures; measuring apparatus; measuring devices, electric; measuring glassware / graduated glassware; measuring instruments; measuring spoons; mechanical signs; mechanisms for coin-operated apparatus; mechanisms for counter-operated apparatus; megaphones; mercury levels; metal detectors for industrial or military purposes; meteorological balloons; meteorological instruments; metronomes; micrometer screws for optical instruments; micrometers / micrometer gauges; microphones; microprocessors; microscopes; microtomes; milage recorders for vehicles / kilometer recorders for vehicles; mirrors [optics]; mirrors for inspecting work; modems; money counting and sorting machines; monitoring apparatus, electric; monitors [computer hardware]; monitors [computer programs]; motor fire engines; mouse [data processing equipment]; nautical apparatus and instruments; naval signalling apparatus; navigational instruments; needles for record players / styli for record players; neon signs; nets for protection against accidents; notebook computers; objectives [lenses] [optics]; observation instruments; octants; ohmmeters; optical apparatus and instruments; optical character readers; optical condensers; optical data media; optical discs; optical fibers [fibres] [light conducting filaments] / light conducting filaments [optical fibers [fibres]]; optical glass; optical goods; optical lanterns / optical lamps; optical lenses; oscillographs; oxygen transvasing apparatus; ozonisers [ozonators]; parking meters; particle accelerators; pedometers; peepholes [magnifying lenses] for doors; periscopes; phonograph records / sound recording discs; photocopiers [photographic, electrostatic, thermic]; photometers; phototelegraphy apparatus; photovoltaic cells; pince-nez / eyeglasses; pince-nez mountings / eyeglass frames; pipettes; plane tables [surveying instruments]; planimeters; plates for batteries; plotters; plumb bobs; plumb lines; pocket calculators; polarimeters; postage stamp meters; precision balances; precision measuring apparatus; pressure gauges / manometers; pressure indicator plugs for valves; pressure indicators; pressure measuring apparatus; printed circuits; printers for use with computers; prisms [optics]; probes for scientific purposes; processors [central processing units] / central processing units [processors]; projection apparatus; projection screens; protection devices against X-rays [Roentgen rays], not for medical purposes / protection devices against Xrays, not for medical purposes / protection devices against Roentgen rays, not for medical purposes; protection devices for personal use against accidents; protective helmets; protective masks; protective suits for aviators; protractors [measuring instruments]; punched card machines for offices; push buttons for bells; pyrometers; quantity indicators; radar apparatus; radiological apparatus for industrial purposes; radiology screens for industrial purposes; radios; radiotelegraphy sets; radiotelephony sets; railway traffic safety appliances; range finders / telemeters; readers [data processing equipment]; record players; reflecting discs for wear, for the prevention of traffic accidents / reflecting discs, for wear, for the prevention of traffic accidents; refractometers; refractors; regulating apparatus, electric; relays, electric; remote control apparatus; resistances, electric; respirators for filtering air; respiratory masks [other than for artificial respiration] / respirators [other than for artificial respiration]; retorts; retorts' stands; revolution counters; rheostats; road signs, luminous or mechanical; rods for water diviners; roentgen apparatus not for medical purposes; rulers [measuring instruments]; rules [measuring instruments]; saccharometers; safety nets / life nets; safety restraints [other than for vehicle seats and sports equipment]; safety tarpaulins; salinometers; satellites for scientific purposes; scales; scanners [data processing equipment]; screens [photography]; screens for photoengraving; screw-tapping gauges; self-regulating fuel pumps; semi-conductors; sextants; sheaths for electric cables; shoes for protection against accidents, irradiation and fire; shutter releases [photography]; shutters [photography]; sighting telescopes for firearms; signal bells; signal lanterns; signalling buoys; signalling panels, luminous or mechanical; signalling whistles; signals, luminous or mechanical; signs, luminous; simulators for the steering and control of vehicles; sirens; slide calipers; slide projectors / transparency projection apparatus; slide-rules; slope indicators / clinometers / gradient indicators / inclinometers; smoke detectors; sockets, plugs and other contacts [electric connections] / plugs, sockets and other contacts [electric connections]; socks, electrically heated; solar batteries; solderers' helmets; soldering apparatus, electric / welding apparatus, electric; soldering irons, electric; sonars; sound locating instruments; sound recording apparatus; sound recording carriers; sound recording strips; sound reproduction apparatus; sound transmitting apparatus; sounding apparatus and machines; sounding leads; sounding lines; spark-guards; speaking tubes; spectacle cases; spectacle frames; spectacle glasses; spectacles [optics]; spectrograph apparatus; spectroscopes; speed checking apparatus for vehicles; speed indicators; speed measuring apparatus [photography]; speed regulators for record players; spherometers; spirit levels; spools [photography]; sprinkler systems for fire protection; stands for photographic apparatus; starter cables for motors; steering apparatus, automatic, for vehicles; stereoscopes; stereoscopic apparatus; stills for laboratory experiments; sulphitometers; sunglasses; surveying apparatus and instruments; surveying chains; surveying instruments; surveyors' levels; swimming belts; swimming jackets; switchboards; switchboxes [electricity]; switches, electric; tachometers; tape recorders; taximeters; teaching apparatus; teeth protectors; telegraph wires; telegraphs [apparatus]; telephone apparatus; telephone receivers; telephone transmitters; telephone wires; teleprinters / teletypewriters; teleprompters; telerupters; telescopes; television apparatus; temperature indicators; terminals [electricity]; test tubes; testing apparatus not for medical purposes; theft prevention installations, electric; theodolites; thermionic lamps and tubes; thermionic valves [radio]; thermometers, not for medical purposes; thermostats; thermostats for vehicles; thread counters / waling glasses; ticket dispensers; time clocks [time recording devices]; time recording apparatus; time switches, automatic; tone arms for record players; totalizators; transformers [electricity]; transistors [electronic]; transmitters [telecommunication]; transmitters of electronic signals; transmitting sets [telecommunication]; transparencies [photography] / slides [photography]; tripods for cameras; turnstiles, automatic; urinometers; vacuum gauges; vacuum tubes [radio]; variometers; vehicle breakdown warning triangles; vehicle radios; verniers; video cassettes; video game cartridges; video recorders; video screens; video telephones; videotapes; viewfinders, photographic; viscosimeters; voltage regulators for vehicles; voltmeters; voting machines; wafers [silicon slices]; washing trays [photography]; water level indicators; water wings / floats for bathing and swimming; wavemeters; weighbridges; weighing apparatus and instruments; weighing machines; weights; welding electrodes; whistle alarms; wire connectors [electricity]; wires, electric; word processors; workmen's protective face-shields; X-ray films, exposed / roentgen films, exposed; X-ray photographs, other than for medical purposes; X-rays producing apparatus and installations, not for medical purposes; x-rays tubes not for medical purposes; none of the afore-mentioned goods including dog whistles.

Precision airflow control systems for use in critical room environments such as laboratories, pressurized rooms in healthcare facilities, animal research centers and clean rooms.