I dug this out of a 2020 science paper----it's about reusing N95 masks---
Disinfection of disposable PPE can be attempted whenever the supply is limited during pandemics [6,7]. Reuse of N95 respirators has been proposed by CDC [4], but this carries a risk of contamination and infection of HCWs. Disinfection of N95 respirators may provide an alternative option. The disinfection process is faster using SteraMist, a hand-held device, than the conventional platform, which uses a higher concentration of H2O2 vapour (30% – 35%) and requires concealment of the air ventilation system and longer cycle times. Ultraviolet germicidal irradiation has also been used for the disinfection of N95 respirators, but it has been shown to degrade polymers,
Disinfection of disposable PPE can be attempted whenever the supply is limited during pandemics [6,7]. Reuse of N95 respirators has been proposed by CDC [4], but this carries a risk of contamination and infection of HCWs. Disinfection of N95 respirators may provide an alternative option. The disinfection process is faster using SteraMist, a hand-held device, than the conventional platform, which uses a higher concentration of H2O2 vapour (30% – 35%) and requires concealment of the air ventilation system and longer cycle times. Ultraviolet germicidal irradiation has also been used for the disinfection of N95 respirators, but it has been shown to degrade polymers,
