NIOSH N95 Respirator Dust Mask

These fold flat, individually sealed, NIOSH-approved particulate respirators are recommended for use against a pandemic (bird flu).

Also commonly used for dusty situation and could be very handy for volcanic eruptions (The most effective respiratory protection for adults is to wear a well-fitting, industry-certified facemask such as an N95 mask) (USGS),  

These are not the very basic nuisance dust masks that are found in some survival kits.    

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