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Viral Filtration Results

The 3MD 5-micron masks and community masks were evaluated in viral filtration studies by the world-famous Nelson Labs in Utah.  3MD’s mask samples were pre-washed and dried twice prior to the initial study.  The results are attached below.  Our mask with the 5 micron felt filter showed a viral filtration efficiency (VFE) of 93.6% and our community mask had a VFE of 81%. By comparison, a regular 2-layer cloth mask had a VFE of only 61%.  Both masks provide greater protection than a standard cloth mask.  

The key for our results is as follows: 

A:  3MD Pro mask with 5 micron felt filter
B:  3MD Community mask with standard felt filter
C:  2-layered cotton mask with no filter
D:  Disposable surgical mask
E:  Pre-used N95

 

Update:  3MD’s 5-micron mask was recently retested by Nelson Labs after washing for a cumulative total of 920 minutes (15.3 hours) in a high-efficiency washing machine with warm water. It showed high durability by maintaining a viral filtration efficiency of 91.7%.

Viral Filtration Results

Viral Filtration Results