Author: Albert I. Nazeeri; Isaac A. Hilburn; Daw-An Wu; Kabir A. Mohammed; D. Yovan Badal; Moses H.W. Chan; Joseph L. Kirschvink
Title: An Efficient Ethanol-Vacuum Method for the Decontamination and Restoration of Polypropylene Microfiber Medical Masks & Respirators Document date: 2020_4_16
ID: ncjdsbn4_11
Snippet: In order to measure the efficiency of various medical masks and respirators, it is necessary to monitor the drop in particulate concentration for air that is passing through the filters under conditions that mimic those under natural use. Commercial units for doing this that follow formal ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) aerosol standards cost upwards of $65k, with delivery lead times longer than .....
Document: In order to measure the efficiency of various medical masks and respirators, it is necessary to monitor the drop in particulate concentration for air that is passing through the filters under conditions that mimic those under natural use. Commercial units for doing this that follow formal ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) aerosol standards cost upwards of $65k, with delivery lead times longer than that expected for the COVID-19 pandemic. However, our present analytical needs are more limited as we simply need to measure the filtration efficiency, not achieve formal certification.
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