The UNS 1 masks for the general public with filtration > 90% are suitable for professionals in direct and regular contact with the public. They can therefore be worn by people who need to continue working in a context of possible exposure to COVID19 : cashier hosts and hostesses, delivery personnel, postal or law enforcement agents, traders of basic necessities, etc. They are also worn in the presence of people wearing masks of another category (surgical mask, FFP2 or UNS 1).
The instructions for use must be read carefully before handling the UNS 1 filtration > 90% barrier masks. They must be kept for the entire duration of use of the masks.