Without valve.

This type of mask protects individuals from fine (toxic) particles and flu viruses, such as COVID-19. The contaminant concentration goes up to 10 x VME. The presence of a valve is possible but not mandatory.
They are commonly used in hospital and care environments to protect the user from external agents , as well as preventing the transmission of droplets and aerosol infections.

• High protection.
• Filter capacity – above 92% – towards the outside and the wearer
• Box of 20 pcs, – Cartons of 400 pcs

Certified Uni en 149:2009CE.