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Ultraviolet Light Can Clean N95 Masks for Reuse Without Hindering Performance

NIST examines disinfection methods that could be critical in the future if PPE supply is low

NIST
Wed, 04/27/2022 - 12:01
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To combat Covid-19 amid supply shortages in 2020, healthcare facilities across the United States resorted to disinfecting personal protective equipment (PPE), such as N95 masks, for reuse with methods such as ultraviolet (UV) light. But questions lingered about the safety and efficacy of these methods and how best to implement them.

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Now, in perhaps the most rigorous examination of UV light’s effects on N95 masks yet, researchers at the National Institute of Standards and Technology (NIST) have shown that these masks can be disinfected with little effect on their form or function. In a study published in the Journal of Research of the National Institute of Standards and Technology, the researchers, with help from federal and private partners, scrutinized UV-exposed N95 masks for traces of virus and looked for changes in the shape of their fibers, ability to filter out aerosols, and other properties.

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Comments

Submitted by Tom Pyzdek on Wed, 04/27/2022 - 10:40

What about disinfecting with ozone?

I have a CPAP cleaning machine that uses ozone. Can I clean N95 masks with it?

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Submitted by Quality Digest on Thu, 04/28/2022 - 07:47

In reply to What about disinfecting with ozone? by Tom Pyzdek

Ozone disinfection

Interesting research paper on that topic. https://www.medrxiv.org/content/medrxiv/early/2020/06/01/2020.05.28.200…
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