Author: Ania Mitros

A Mask Fabric Combination Better Than Cotton

In this guest blog post Ania Mitros, Ph.D. discusses the laboratory testing data and science behind her preferred fabric combination for masks: two layers of ~65 gsm (gram/m²) spunbond nonwoven polypropylene (NWPP) plus one layer of ~130 gsm woven cotton. Her recommendation comes after reading dozens of scientific publications on the subject and investing thousands […]

Fabric Mask Filtration Overview

This post aims to provide a basic understanding of fabric mask filtration through a broad overview of particle physics, disease transmission, and biology of particles. Introduction: How well do fabric masks filter? The question of how well any specific mask fabric combination blocks SARS-CoV-2, the virus responsible for COVID-19, turns out to be rather complex. […]

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