Subscription Agreement Terms:1. Item shipped monthly2. Filters billed every 30 days / Masks billed at selected frequency 3. Select your membership term4. Filter plans can be increased or decreased any time5. Cancel any time after initial termFull Terms & Conditions
you become a Puraka PM2.5 Filter subscriber, consider yourself covered. When you
sign up, we'll send two free masks, a SteraLight UVC sterilization box, Puraka's exclusive self-sticking pm2.5 filter replacements in the quantity you select, and a mesh laundry bag for your masks. Each month after that, you'll receive replacement filters and enjoy a 10% discount and free expedited shipping on all store purchases. There are no sign-up fees, no shipping charges, and you can
change your monthly filters at any time. See below for additional details, and
breathe easy. Retail PM2.5 Filters
More Protection, Less Discomfort |
Puraka Masks + filters are designed for enhanced,
every-day protection suitable for active or casual use. 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 COVID-recommended 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. Subscribers get free USPS First Class / Priority shipping on any mask order!
Puraka's exclusive vacuum-packed
replacement filters delivered every month, on time, for as much as half the
price of our retail filters.
Sign up today to take take 10% off your initial
order (excluding subscription fee). You'll also save 10% on all future orders,
whether you're buying for yourself, or as
gifts for others.
Subscribers receive a
second-generation disinfection box, shipped immediately, at no
additional cost, plus a mesh laundry bag for washing and drying your masks
At sign-up, subscribers select two free masks,
shipped immediately. You'll receive a coupon for two additional masks every six
months after that.
Subscribers get free USPS Priority / First Class
shipping on all mask purchases sitewide, with no minimum quantity requirements.
Other subscriber-only discounts and offers.
Subscription fees are billed monthly
for a minimum term or either 12 or 6 months. You can increase or decrease your
monthly filter quantity at any time.
Terms & Conditions.
We take great care to ensure our
filters are made of the highest-quality materials available. We require each filter
to meet these standards:
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 aerosolized nano-particles.
Characteristics: Spun-bond is a non-woven fabric that
filters out larger particles, while providing structure to the inner melt-blown
Activated Carbon Fabric
Characteristics: Activated carbon fabric traps particulates
via a process called adsorption, and also serves as an antibacterial and
Not Suitable for Medical or
A 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
Our 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
The most important thing you can do
to prevent catching (and giving) viral infections is to 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 mitigation
strategies. A facemask and carbon pm2.5 filter will be highly effective against
water droplets carrying airborne illnesses. Virions travelling via fine aerosols
will be reduced, but will not be completely eliminated.