9 Scientific, measuring, signaling and monitoring instruments, namely microscopes, spectrographs, chromatographs, electronic sensors and computers for detecting and monitoring pathogen levels in foods or in air; computer software for demonstration of the use and operation of scientific, measuring, signaling and monitoring instruments namely atomizers, nebulizers, and evaporators with electronic controls specifically calibrated and adjusted for controlling levels of application to foods and dispersion into the air of antibacterial, antimicrobial and virucidal preparations by aeration devices; computer software to detect and identify bacteria and microbes and adjust levels of application or dispersion of antibacterial, antimicrobial and virucidal preparations for perishable products in the foods, cosmetics, microbially perishable products and plant protection fields, and in the human medical and veterinary fields; and computer game software for entertainment and for the education of users or consumers of antibacterial, antimicrobial and virucidal preparations