https://techcrunch.com/2020/04/13/fda-clears-n95-decontamination-process-that-could-clean-up-to-4-million-masks-per-day/

The U.S. Food and Drug Administration (FDA) has provided an emergency use authorization (EUA) for a decontamination process provided by company Advanced Sterilization Products (ASP) that could see as many as 4 million N95 respirators per day sterilized for re-use. That’s a significant potential dent in the ongoing shortage of supplies faced by medical professionals and frontline workers at healthcare facilities.

This decontamination process would open up re-use of N95 masks originally designed for single use, and it uses vaporized hydrogen peroxide gas to clean the respirators. ASP’s STERRAD series sterilization machines, which are covered under the EUA, are in use in around 6,300 hospitals already (they’re commonly used for sterilizing other pieces of clinical equipment, but have not previously been intended for use with N95 masks) and there are around 9,930 in operation across the U.S., each with the capability of processing around 480 masks per day.