• Available in 3 different sizes: M, L, XL
• Head-straps and Nose-foam are included
• Valve Deactivator is not included
   

Cambridge Mask Filter Material Testing: 

Cambridge Masks pass the >99% requirement set for the European classification EN 149/FFP3 and the US classification 42 CFR 84, subpart K/N99, for the solid aerosol tests.

Due to the further prerequisite of EN 149 in regards to liquid aerosol test (not required for N classification), Cambridge masks receive a mean of PFE of 97% - this equates to FFP2. 

Cambridge Mask test results: 

• Particle Filtration Efficiency >98%
• Breathing resistance <2 mbar 
• Bacterial Filtration Efficiency >99% 
• Viral Filtration Efficiency >99% 

HOW TO WASH YOUR MASK:

The PRO Mask can be used for up to 340 hours depending on the level of pollution it is exposed to.

For the average customer this is around 3-6 months of wear. The mask can be washed with soap and hot water, however, keep in mind that this will not extend the life of the filters.