We identified "Critical Fit Zones" in human facial anatomy where seal leakage was occurring and adjusted the geometric design of the face seal to eliminate the areas of face seal leakage.

This face seal design performs up to 240 times higher than the current face seal technology deployed in N95 surgical respirators as measured by Simulated Workplace Protection Factors. Our design results is an extreme improvement in safety for healthcare workers who are treating patients with aerosol viruses.

Critical Technologies holds patents for both Face Seal designs and full Filtering Face Piece Respirators. These products are designed specifically around human facial anatomy. 

The results of these studies have been published in the Aerosol Journal of Science and the National Institute for Occupational Safety and Health(NIOSH) Education and Information Division.
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Published Research

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