The NARVALO URBAN MASK masks were designed with BLS and tested in the BLS and ITALCERT laboratories, obtaining values ​​higher than a standard FFP3. As described on the certifications page, filtration and respiratory resistance tests and a specific test (called fit-test) were performed to validate the seal on the face (FIT FACTOR >100 for an FFP3).
To date we are the only FFP3 PPE certified mask available for the consumer market according to the EN 149:2001+A1:2009 regulation.
As regards the life of the filter, it has been estimated that each single filter, in optimal storage conditions and in normal use, guarantees protection for 30 days