Filtration down to 0.1 micron

B2 Filters are rated for filtration down to 0.1 micron particles (that’s 100 nanometers). That’s much smaller than your average sneeze or piece of dust. We have you covered for all of the tiny particles known as PM10 and PM2.5.

What's Inside our filters

Easy Breathing

B2 Filters have a large surface area to maximize airflow. They are 40% more breathable than the strict requirements set by NIOSH for non-powered respirators.

Particle Attraction

The electrostatically-charged non-woven polypropylene layer in all B2 Filters attracts and traps particles as they flow through.

Particle Entrapment

The super-fine meltblown polypropylene layer in the Original B2 Filter traps smaller particles that make it through woven fabrics.

Third-party verified

B2 Filters were put through precise filtration efficiency and airflow resistance testing at the University of Minnesota Department of Mechanical Engineering. Using a size range of particles from 30 to 300 nm, we are able to understand filter performance down to the smallest detail.

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Designed to the highest standard

B2 Mask is designed for everyday use at home and in the workplace. It was designed according to requirements set out by NIOSH and the FDA in 42 CFR 84, though it is not currently approved nor is it a medical device. Our filter material has been tested as >99% efficient for bacterial and viral filtration (ASTM F2101). However this test is not as strict as the requirements set by NIOSH for particle filtration.

Conforming fit

A well-sealed mask is a critical part of protection. The patent-pending facepiece flexes to your face so that all air coming in and out of your mouth and nose goes through our high-efficiency filters. Sign up here to hear when more sizes are available.

No Valves

B2 Filters work in both directions, which means that both you and those around you are protected. There are no valves in the B2 Mask, only highly efficient, breathable filters.

Find out more

Check out these other resources for more information

Fit Guide

Care Guide

Breathe99 Help Center

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