By Billy Hammond (Copyright AELS)

April 15, 2020

Cleaning and Reusing N95 Respirators

The FDA has Emergency Use Authorizations for cleaning and reusing the limited supplies of N95 respirators. The machines that are being approved use a process tested and confirmed by Duke University which uses hydrogen peroxide vapor to decontaminate N95 respirators.

The STERRAD series sterilization machines in use at many US hospitals for the decontamination of other equipment appear to be able to do the job as well. Their use has been added to the already cleared Battelle’s cleaning system. Both systems use vaporized hydrogen peroxide to disinfect and clean the masks.

Some other methods have been tried for sterilization with alcohol and chlorine disinfection being shown to damage the masks. UV and steam have also been used successfully. See the PDFs available from this link for more details.

Japan might have something similar they could put into use to ease the shortage.

N95消毒・再利用許可(米国:FDA)

米国の食品医薬品局(FDA)は数の限れたN95医療用マスクの消毒・再利用に緊急使用認可を再び出した。許可された機械はデューク大学 が調べて確認した過酸化水素ガスで消毒を行い、数多くの機械は既に米国の病院に設置されており、他の医療器具の消毒に使用されている。

今回認定された機械はASP社生産のSERRADシリーズ。既に緊急使用認可を受けたBatelle消毒システム機械に加わった。両システムは過酸化水素ガスを利用し、消毒を行う。

今までアルコール消毒と塩素系消毒がマスクを劣化させることを証明されている。UVと蒸気消毒は効果的だとも判明されている。詳しくはリンク先PDF参照。

日本にも同じ加工を使っている機械があれば、再利用は可能なはず。

*リンク先の記事は英語

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English novels by Billy Hammond published by AELS

(AELS出版英語書籍リスト)

 

I. Majoh Gakuin and Hikari Juku – Japanese Witch Schools Trilogy

1. Majoh Gakuin & Hikari Juku – Japanese Witch Schools

2. Lost Witch (The second book)

3. Fate & Magic (The final book in the trilogy)

II. Brindle – Scryer Extraordinaire Trilogy

1. Brindle – Scryer Extraordinaire

2. Brindle – Scryer Extraordinaire – Returns

3. Brindle – Scryer Extraordinaire – Challenges (The final book in the trilogy)

III. Fantasy fiction set in Japan

1. 21st Century Ninja

2. Regressed

3. Japanese Woman

IV. Fantasy fiction set outside of Japan

1. Dimension Jumpers

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