04-04-2020, 03:50 AM
Those cloth masks are N03 rated!
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Ars covers the efficacy of face masks
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Ars covers the efficacy of face masks - by Sarcany - 04-04-2020, 03:04 AM
Re: Ars covers the efficacy of face masks - by freeradical - 04-04-2020, 03:35 AM
Re: Ars covers the efficacy of face masks - by Markintosh - 04-04-2020, 03:42 AM
Re: Ars covers the efficacy of face masks - by Carm - 04-04-2020, 03:50 AM
Re: Ars covers the efficacy of face masks - by jdc - 04-04-2020, 03:52 AM
Re: Ars covers the efficacy of face masks - by d4 - 04-04-2020, 07:19 PM
Re: Ars covers the efficacy of face masks - by NewtonMP2100 - 04-04-2020, 07:32 PM
Re: Ars covers the efficacy of face masks - by PeterB - 04-04-2020, 10:38 PM
Re: Ars covers the efficacy of face masks - by Sam3 - 04-05-2020, 01:48 PM
Re: Ars covers the efficacy of face masks - by Sarcany - 04-05-2020, 03:26 PM
Re: Ars covers the efficacy of face masks - by PeterB - 04-05-2020, 07:20 PM
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