Table 2

Reported decontamination methods and effect of the methods

Method/chemicals usedMethod referenceAntimicrobial efficiency of methodsImpact of decontamination on fit
Ultraviolet irradiation85–8999.9%After three cycles fit test passing rate is 90%–100%.
Hydrogen peroxide (H2O2) vapour85 87>99.999%Until 20 cycles fit was unaffected.
Ethylene oxide86 90Not assessedNot assessed.
Moist heat incubation89–9199.99%Passed the fit test.
Microwave steam bags9299.9%Not assessed.
Microwave-generated steam87 9199.9%After 3 and 20 times, the fit test passing rate was 95%–100%.
Hydrogen peroxide (H2O2) liquid90 93Not assessedNot assessed.
Ethanol85Effective against SARS-CoV-2Substantially distorted mask integrity.
Ozone disinfectant
(SoClean Continuous Positive Airway Pressure Sanitizer)
95Not assessedNo damage was reported to the functional property of the mask.
Rice cooker steam96Effective against bacteriaNot assessed.