The masks should be resilient against disintegration, tearing-off or spoilage at the time of use. Special care must be taken while selecting filter and layer materials- they should be clean and non-reactive to chemicals.
The masks should be able to fit properly to the wearer- they should enclose the nose, mouth, and chin of the wearer and must leave no gaps from the sides.
There are several performance tests that the medical masks are required to undergo. These include the tests related to Bacterial filtration efficiency (BFE), splash resistance, breathability, microbial cleanliness, biocompatibility, and a lot more.
The packaging of face masks must include the specifications about the product. This is as per the Annex I of the Medical Devices Directive (93/42/EEC).
In addition to that, the following information must be provided:
- Number of this European Standard.
- Type of mask