You Can Decontaminate And Reuse N95 Face Masks, Scientists Confirm: Here's How
To denote the ideal disinfecting method, they pointed out a study that tested with a variety of chemicals including bleach, ethylene oxide, microwave oven irradiation, ultraviolet germicidal irradiation (UVGI), and hydrogen peroxide (vaporized and liquid forms). They were looking at methods that would not impact the performance of the mask and keep them breathable after a wash.
With COVID-19 spreading like wildfire, people have been trying their best to save themselves from contracting the novel coronavirus.
Reuters
While many are locked down in their homes, following social distancing, some need to step out to restock groceries and medical supplies among other things.
During this time, face masks prevent us from coming in contact with contaminated air that could infect us. But these face masks don¡¯t last forever, and there is already a grave shortage of masks globally. Many are resorting to washing the masks and reusing them, but many fear that it would cause them to be less effective. Or so it seems.
Reusable N95 Masks and Respirators
According to a paper published by Stanford Anesthesia Informatics and Media Lab, you can disinfect and reuse N95 masks or respirators.
To denote the ideal disinfecting method, they pointed out a study that tested with a variety of chemicals including bleach, ethylene oxide, microwave oven irradiation, ultraviolet germicidal irradiation (UVGI), and hydrogen peroxide (vaporized and liquid forms).
They were looking at methods that would not impact the performance of the mask and keep them breathable after a wash.
Reuters
Bleach failed as its gas remained on the mask that caused irritation. Microwaving melted the mask, which made it not useful. Ethylene oxide, ultraviolet germicidal irradiation, and hydrogen peroxide decontamination were safe and effective in the models tested but it is not known if they would retain filtration, material strength,and airflow integrity with repeated use.
So what method is the best?
As it turns out, the best methods are also the simplest ones. Stanford Researchers asked N95 filter-maker 4C Air for the best methods to decontaminate the masks, and they revealed that heating the masks in an oven at a temperature of 70 degree Celsius /158 degree Fahrenheit for 30min worked like a charm. Additionally, if you don¡¯t have an oven at home, hot water vapour from boiling water for 10 min also worked effectively, the report claimed.
