Suffering from smoke
pollution? We've cut prices on PM2.5
Our PM2.5 filters are comprised of professional-grade non-woven spun-bond fiber, melt-blown fiber with electrostatic properties, and activated carbon fabric. Three materials, five layers, one trusted source.
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We 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 aerosolized nano-particles.
Characteristics: Spun-bond is a non-woven fabric that filters out larger particles, while providing structure to the inner melt-blown layers.
Activated Carbon Fabric
Composition by Weight: 20%
Characteristics: Activated carbon fabric traps particulates via a process called adsorption, and also serves as an antibacterial and deodorizer.
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 respirator.
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. Ground shipping is free for most products in our store, and we offer expedited first class and priority shipping for only $1 per item. With our subscription service, we mail your replacement filters at least a week before your monthly anniversary date.
We Know Masks | Puraka is an American company based in Seattle, Washington, founded in 2018 after the West Coast wildfires. We have the experience to know how to make a great mask, and what to look for in a filter.
Not Suitable for Medical or Industrial Use
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 industrial use.
Testing & Certification
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 performance specifications.
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. Airborne virions travelling solo may be reduced, but will not be completely eliminated.