Mask Efficacy Comparison

The difference in mask gaps is significant

Filtration Efficiency in %
<300nm average ± error
N95 (no gap)
85 ± 15
N95 (with gap)
34 ± 15
surgical mask (no gap)
76 ± 22
surgical mask (with gap)
50 ± 7
ACS Nano 2020, 14, 5, 6339–6347 Publication Date: April 24, 2020

The fit of the mask makes a huge difference.

In a recent study of masks performed by the American Chemical Society, the fit of the mask and absence of air gaps can make a huge difference regardless of mask type.

Even an N95 mask, which is considered the premiere filtration and barrier to infection, drops to around 34% effective when not fitted correctly.

Surgical masks drop to 50% when there are gaps between the face and outside environment. Mask frames are designed to reduce gaps.
Here is a study by the Center for Health-Related Aerosol Studies, Department of Environmental Health , University of Cincinnati , Cincinnati, Ohio which demonstrates in great detail the value of wearing a mask with reduce air gaps. Performance of an N95 Filtering Facepiece Particulate Respirator and a Surgical Mask During Human Breathing: Two Pathways for Particle Penetration

The Connecticut Biotech Secure Fit mask frame is made exactly to your facial measurements insuring a significant reduction in air gaps without sacrificing comfort.
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