Health
You can effectively disinfect N95 masks using a household electric rice cooker
The findings, published in the journal Environmental Science and Technology Letters, allow wearers to safely reuse a limited supply of ventilators that were originally intended to be disposable items. I will.
The N95 respirator is the gold standard for personal protection to protect the wearer from airborne droplets and particles, such as the coronavirus that causes COVID-19.
Thanh Nguyen, a professor at the University of Illinois at Urbana-Champaign, said: Us.
The high demand during the COVID-19 pandemic has created a serious shortage of health care providers and other essential workers, encouraging them to explore creative approaches to disinfection.
“There are many different ways to disinfect something, but most destroy the filtration and fit of the N95 mask,” said Vishal Verma, a professor at the University of Illinois.
“Every hygiene method requires decontamination of all ventilator surfaces, but equally important is maintaining filtration and a fit on the ventilator wearer’s face. In that case, we can’t provide adequate protection,” said Barma.
Researchers have found that electric cooking can be useful for health care workers and first responders, especially those in small clinics and hospitals who do not have access to large thermal disinfection facilities.
This may be useful for people who have an N95 ventilator at home and want to reuse it, such as a pre-pandemic housing improvement project.
The researchers hypothesized that dry heat could be a way to meet all three criteria: decontamination, filtration, and compliance without leaving special preparations or chemical residues.
They also wanted to find a way for people at home to have wide access.
The team decided to test an electric rice cooker, a type of device that many people have in their pantry.
They say that one cooking cycle, which maintains the contents of the cookware at about 100 degrees Celsius for 50 minutes, decontaminates the mask from the inside and outside from four different classes of viruses, including coronavirus, is more effective than UV light It was confirmed that it was decontaminated. ..
“To investigate filtration on the N95 ventilator, we built a chamber in an aerosol testing lab and measured the particles passing through it,” says Verma.
“Even after 20 cycles of decontamination with an electric mask, the ventilator maintained a filtration capacity of over 95%, remained fit, and fit properly on the wearer’s face,” he said. It was.
Researchers note that the heat must be dry heat-do not add water to the cooker, maintain the temperature at 100 degrees Celsius for 50 minutes, cover the bottom of the cooker with a small towel, and place the ventilator on it. It should be in direct contact with the heating element, which should be free of any part of it.
However, Nguyen added that multiple masks can be stacked at the same time and placed inside the rice cooker.
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