The Federal Office of Public Health in Switzerland has just released a new version of the Precautionary Matrix for Synthetic Nanomaterials. This tool, which allows to perform semi-quantitative risk assessment of NMs, has been developed in close collaboration with industry, academia, consumer and environmental organisations and it is free to use following the link: https://www.bag.admin.ch/bag/en/home/gesund-leben/umwelt-und-gesundheit/chemikalien/nanotechnologie/sicherer-umgang-mit-nanomaterialien/vorsorgeraster-nanomaterialien-webanwendung.html