|sample/fabric||<300 nm average ± error|
|N95 (no gap)||85 ± 15|
|N95 (with gap)||34 ± 15|
|surgical mask (no gap)||76 ± 22|
|surgical mask (with gap)||50 ± 7|
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.