The Primary Filter Layer

The first layer of our air pollution mask is designed to filter our larger particles such as dust and PM10. The material is printed in different patterns to make the pollution masks fashion friendly. We use sublimation to print any logos or patterns, making them great for marketing and corporate branding.

Dye-sublimation printing uses digital technology that works with polyester and polymer-coated substrates. Our unique sublimation dyes are transferred to special paper via liquid gel ink through piezoelectric print heads. Using heat and pressure the dye is then transferred into the fabric. The end result fuses the dye to the textile on a molecular level, meaning it cannot be removed from washing. When dye is only applied to the surface of the textile or material to be printed, it can be removed from wear or washing, which we avoid with this technique.

The Three-Ply Micro Particulate Layer

The second layer of the pollution mask is designed to block particulate pollution such as PM2.5. It is tested to filter particles as small as PM0.3. The textile is a three-ply non-woven melt-blow polypropylene, a thermoplastic polymer used in a range of applications. The blow moulding process begins with melting down the plastic and forming it into a “parison” – a ball of liquid. High velocity air is then passed through to attenuate the filaments and create a fibrous web. The random fibre orientation this triggers is advantageous because it creates a better mesh to trap pollution. The textile is also created with a high surface area, meaning a greater percentage of particulates are captured as they pass through the filter.

Military Grade Carbon Filter

Our inner filter is made from a 100% pure activated carbon cloth, which was originally invented by the UK Ministry of Defence. It was then extensively developed and made into a product for use in chemical, biological and nuclear warfare protection, used by armed forces around the world.

All activated carbons – traditionally powders and granules – generate “Van der Waal” forces due to their porous structure. These forces give activated carbons their unique potential to absorb molecules, including anions and cations into their internal pores.

Our filter material is comprised of a series of activated carbon filaments, each about 2,000 nanometres in diameter. The pores in each filament are 25 times smaller than those in standard carbon materials, and therefore more powerful. This means that bacteria and viruses are drawn to the surface from further away.

The high number of filaments – spun into a yarn and then woven into cloth – concentrate and intensify the Van der Waal forces, including powerful electrostatic charges. This way, not only are molecules such as endotoxins quickly absorbed into the pores from a much wider area, but these forces also attract and immobilise much larger particles including bacteria, which often have a negatively charged membrane. The material traps the bacteria and draws out the gel-like cytoplasm inside – killing it and preventing infection.

Atlanta Healthcare Cambridge Masks are therefore powerful respirators that not only clear the air of pollution via the particulate filter, but also remove potentially harmful pathogens with the additional carbon filter.

Protect Against

Virus and Bacteria



Smoke and Soot Particles


We have taken the technology from a mask like this...

So now you and your family can be safe looking like this...

And created a mask like this...

Instead of having to feel you look like this.

We have taken the technology from a mask like this...

And created a mask like this...

So now you and your family can be safe looking like this...

Instead of having to feel you look like this.

To independently verify what we already knew, we took our masks to Nelson Labs of America, a US FDA approved facility which does testing for National Institute of Occupational Safety and Health (NIOSH) compliance. US Government tests for respirators are often used as the international ‘gold standard’ as they are incredibly thorough. Cambridge Masks performed as follows:

  • Meets the NIOSH N99 standard for filtration, meaning consistent particulate filtration in excess of 99% was maintained (as opposed to the next level down, N95 with excess of 95%)
  • 99.6% filtration of viruses
  • 99.77% filtration of bacteria
  • Meets the NIOSH standard for inhalation/exhalation meaning that the breathing resistance is within the requirements


  • PM10 refers to particles with a diameter less than 10 microns. These are commonly called coarse particles – they contain dust from roads and industries as well as particles formed under combustion. Depending on their size, coarse particles can lodge in the trachea (upper throat) or in the bronchi.
  • PM2.5 refers to particles with a diameter of less than 2.5 microns. These are actually called fine particles and contain secondary aerosols, combustion particles and re-condensed organic metallic vapour, and acid components. Fine particles can reach all the way down to the alveoli in the lungs.
  • PM0.1 refers to particles with a diameter less than 0.1 microns, and are called ultra-fine particles. Ultra-fine particles – still in the early stages of research – are usually exhaled but can penetrate into the bloodstream.