Bulk Electrostatic Carbon Filters
PM2.5 filters with activated carbon layer and electrostatic barrier

Bulk Electrostatic Carbon Filters

Your Price: $40.00
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Manufactured in China by ISO-Certified Factory with PPE Accreditation

Supercharge Your Mask.

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. Join our subscribers club and save!.

What goes in to a Puraka PM2.5 filter?

We take great care to ensure our filters are made of the highest-quality materials available. We require each filter to meet these standards:

Melt-blown  Melt-blown Fabric

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.

Spun-bond  Spun-bond Fabric

Composition by Weight:  40%

Characteristics:  Spun-bond is a non-woven fabric that filters out larger particles, while providing structure to the inner melt-blown layers.

Activated Carbon  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.

Why choose filters from Puraka?

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. Learn more.

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. All orders of two masks or more ship USPS First Class / Priority, otherwise shipping is only $5. Sign up for our filter subscription service for free shipping on all mask and filter orders!

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 developing the national standard for protective face coverings, and work hard to ensure our filters exceed regulatory standards. In other words, we have the experience and know-how to make a filter that works.

Important Safety Information

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.

4 Stars
Filters good, at times warm
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Reviewed by:  from utah. on 11/27/2020

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