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All envo® pro filters with an N95 designation are certified by The National Institute for Occupational Safety and Health (NIOSH)
The moveable plastic round tab assists in holding open one area of the exhalation value during testing
The filter covers are for quantitative fit testing use with a PortaCount machine
Approved for use with envo® pro N99 filters that come with a built-in exhalation valve
and a shield
envo® mask Filters (25 ct.) All envo® pro filters withEach N95 filter remains electrostatically charged until ready to use.
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