An adhesive plastic film designed to protect surfaces such as doorknobs, handrails, elevator buttons, and touch screens inactivates the novel coronavirus on contact.
The manufacturer of the film is Promaflex. It has nanoparticles of silver and silica built into its polyethylene structure, thanks to technology developed by Nanox, a Brazilian company based on São Paulo and supported by São Paulo Research Foundation, through FAPESP’s Innovative Research in Small Business Program (PIPE).
In tests conducted at the University of São Paulo’s Biomedical Sciences Institute (ICB-USP), which has laboratories certified for Biosafety Level III (BSL-3), the film proved capable of eliminating 99.84% of the viral particles after two minutes of contact.
“The technical standard governing measurement of antiviral activity on plastic and other non-porous surfaces, ISO 21702, requires demonstration