MakerMask

Breathability

New ASTM Standard for Face Coverings: ASTM F3502

Since February of 2020, we’ve been asking for standards for masks/face coverings used by our communities. Finally, the American Society for Testing and Materials (ASTM) has established a national  standard (ASTM F3502) for “Barrier Face Coverings” that are neither medical masks according to ASTM F2100 standards nor respirators according to NIOSH standards. This new standard […]

WHO Fabric Mask Guidance – December Updates

On December 1, 2020, the World Health Organization (WHO) updated their guidance on fabric masks, “Mask Use in the Context of COVID-19 (December, 2020)”, including their “Updated Guidance on Non-Medical (Fabric) Masks” (p. 19-22). This post pulls out key quotes from the new WHO guidance, touching on their recommendations for layering, mask performance standards, and […]

Breathable Masks: Testing Results

Key result: Quantitative testing shows that fabric masks constructed from spunbond nonwoven polypropylene (NWPP) and/or quilting cotton are breathable and can satisfy NIOSH criteria for breathability. Ready for more testing?  Visit our MakerMask Lab Testing Campaign for details. Introduction: Breathable Masks Breathing isn’t optional, and as COVID continues and mask wearing becomes commonplace, we are […]

Research Highlights: NWPP Filtration Efficiency from Long et al 2020

This post is the first in a series of “Research Highlights” where we discuss select data and research from the literature in the context of community mask making efforts. In this post, we take a look at the filtration and breathability data for nonwoven polypropylene (NWPP) mask materials presented in: Long KD, Woodburn EV, Berg […]

Myths about Masks

In this guest post, our collaborators from the ROSE Project (Reusable Open Source Equipment) debunk some common myths about face masks for COVID-19 and share the facts about masks.

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