30pcs Mask Filters Replacement, HEPA Activated Melt blown filters Made in USA

Description

DISPOSABLE FACE MASK HEPA FILTERS 30 pcs (3 packs) , Non woven Melt blown filters
No Mask Included !!!
1 Pack = 10 pcs
Condition is New
Made In USA
Material: Anti -Sticking, Non-Woven Melt-Blown, STY-TB, HEPA Filter
Purpose: Anti-Odor, Anti-Dust, Anti-Gas, Anti-Bacterial
This mask filter provides protection for users. It is highly recommended to replace your filter at least once every other day for your benefit.
Extra large size to cover up whole area of Mask
Melt-blown non-woven fabric is recommended. The extremely fine fiber structure of this cloth can well filter the particles in the air. If it undergoes electret treatment, it will also have electrostatic adsorption capacity, which will further enhance the particle filtration capacity.
What is Melt Blown Filter?
Melt Blown Face Mask Filter Material is a type of HEPA (high efficiency particulate air) filter. ... When this filter material is used as the inner layer of a face mask made from a recommended mask material, such as Spun Bonded Polypropylene Non-Woven Material for Masks, the effectiveness of the mask increases.These HEPA filters are made from polypropylene which do not contain fiberglass.
HEPA Filter?
HEPA,
which stands for High Efficiency Particulate Air, is a designation used to describe filters that are able to trap 99.97 percent of particles that are 0.3 microns.
Researchers at t
he
University of Minnesota
tested with weaker fiberglass furnace filters and higher-grade HEPA filters
.
In their test,
they shot particles of silver from
3 to 20
nanometers
at the filters (that’s roughly 5 to 30 times smaller than coro...virus particles).
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