Limited-Time Offers: Mid-Season Sale Up to 70% OFF.
Free shipping on all orders of 2 or more masks!
Free US shipping on all orders of 2 or more masks!
A PM2.5 filter adds a layer of electrostatic protection to your Puraka mask. The professional-grade melt-blown fiber and activated carbon layers work together to create a "static cling" effect laboratory tested to capture the smallest airborne particulates, while the spun-bond polypropylene recommended by the CDC for use in protective face masks adds additional mechanical and "triboelectric" filtration. Three materials, five layers, one trusted source for certified PM2.5 filters. Join
our subscribers club and save on monthly pm2.5 filter replacements!
take great care to ensure our filters are made of the
highest-quality materials available. We require each
filter to meet these standards:
Composition by Weight: 40%
Characteristics: High quality
melt-blown fabric is the most important part of a
particulate filter. Non-woven fibers act as a
physical barrier against microscopic particulates
while also providing an electrostatic barrier to stop
Characteristics: Spun-bond is
a non-woven fabric that filters out larger particles,
while providing structure to the inner melt-blown
Activated Carbon Fabric
Composition by Weight: 20%
carbon fabric traps particulates via a process called
adsorption, and also serves as an antibacterial and
More Protection, Less Discomfort |
Puraka Masks + filters are designed for enhanced,
every-day protection suitable for use in an active or
seated workplace setting. Using a filter provides
significantly more protection than a cloth mask
alone, but with less inhalation resistance and
corresponding heart strain than a professional
We Know Filters | Puraka is an
American company based in Seattle, Washington,
founded in 2018 after the West Coast wildfires. Because we take safety seriously, we serve on the ASTM committee collaborating with NIOSH and the CDC to develop the
national standards for protective face coverings,
and we work hard to ensure our pm2.5 filters exceed regulatory standards. In other words, we
have the experience and know-how to make a filter that works.
Static Stops the Small Stuff | Your fabric mask might be effective at blocking larger particles, but fine aerosols are a different story. According to the CDC, particulates in the sub-micron range can remain airborne for hours, and because of their small size they tend to penetrate physical barriers easily. Fortunately, an electrostatic PM2.5 filter does an excellent job at trapping particulates of this size (approx. 99% standalone efficiency), making these inserts a must for effective filtration. Read more about fine aerosol filtration.
Our In-Stock Guarantee | Filters are
not something you should have to wait for. We only
list products that are ready to ship from one of our
U.S. fulfillment centers in as little as 1 business
day from when you place your order. We offer free ground shipping on any order of 2 masks or more, or you can upgrade to USPS First Class / Priority for only $5. Sign up for our filter
subscription service for free expedited shipping on all mask
and filter orders!
Not Suitable for Medical or Industrial
Puraka Mask + filter is not designed as nor intended
for used as a substitute for medical face masks and
respirators used in a healthcare setting. Although
our PM2.5 filters are manufactured and tested to
N95-equivalent standards, the system is not intended
for industrial use.
Testing & Certification
disposable PM2.5 filters are tested to meet multiple
filtration standards, including the European
Union's EN 149:2001+A1:2009 standard and
China's GB2626-2006 KN95 material standards,
functionally equivalent to the United States' N95
standard (the US does not provide certification for
non-sealed respirators). Puraka also relies on
independent laboratories to test, certify and verify
that our filters exceed performance
most important thing you can do to prevent catching
(and giving) viral infections is to wear a mask, practice physical
distancing, avoid touching your mouth and nose with
your hands, and to wash your hands regularly. A
facemask is not a substitute for any of these
other mitigation strategies. A facemask and carbon pm2.5
filter will be highly effective against water
droplets carrying airborne illnesses. Fine aerosols capable of carrying virus particles will be greatly reduced, but may not
be completely eliminated.
The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Please click Accept Cookies to continue to use the site.
We send emails only once or twice per month.
Sign Up for $5 off your first Essential Mask, and get exclusive updates & insider-only discounts