The standard specification of both ASTM F200-19 and EN 14683:2019 Barrier Levels are placed into comparison by Nelson Labs Medical Face Mask Tests and Requirements.
Wistech Surgical Masks are EN 14683:2019 Type II and have the BFE of more than 98%, which is similar to masks that are of ASTM F200-19 Level 2 (Barrier Testing BFE).
Quoted from Health Science Authority, " In contrast to a thin, single-layered or double-layered paper mask, a surgical mask usually consists of three layers of flat or pleated fabric. " It is also stated that an ideal surgical mask should
- Has the manufacturer’s name printed on its packaging.
- Has a bacterial filtration efficiency of 95% or higher.
- Carries an expiry date on its packaging.
- Does not contain materials that you are allergic to.
- Provides a good fit.
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