9 Measuring, detecting, monitoring and controlling devices; sensors, detectors and monitoring instruments and apparatus; measuring devices and apparatus; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking [supervision], life-saving and teaching apparatus and instruments; testing and quality control devices; apparatus and instruments for recording, transmission or reproduction of sound, data or images; apparatus, instruments and cables for electricity; electrical and electronic components; optical devices and equipment, amplification devices and correctors; software; application software; downloadable and recorded data; particle detecting devices; particle classifying devices; particle flow monitoring devices; particulate emissions monitoring devices; measuring devices for emission measurement; air quality sensors; nanoparticle size analyzers; nanoparticle counter; condensation particle counter; fine dust measuring devices; fine dust analyzing devices; measuring devices for analyzing the dust development of powders and bulk solids; particle size analyzers; filter testers, also optical; protective mask testing devices; optical devices; spectrometers; fluid spectrometers; aerosol spectrometers; aerosol electrometers; aerosol sensors; fluid analyzers; gas sensors; aerosol photometers; aerosol generators; aerosol dilution systems; devices for discharging aerosols; apparatus for measuring humidity; apparatus for regulating air humidity; devices for dry dispersion; devices for determining the particle load of air and gases and aerosols; web application and server software; software for the acquisition, recording, evaluation and visualization of physical measurement data; visualization software; data management software; databases; software for data and file management and for databases; downloadable computer software for use as a programming interface [API]; databases for obtaining and evaluating physical measurement data; databases for analysis and visualization of physical measurement data; measuring, detection, monitoring, control and signaling apparatus and instruments for recording physical measurement data and sensor signals; sensors; parts and accessories of all the aforesaid goods, included in this class.