US Department of Homeland Security develops DIY method to decontaminate masks with a multicooker

‘A household appliance, which may be sitting inside your kitchen cabinet, can now be used as a powerful tool in the fight to control COVID-19. Researchers with the Department of Homeland Security (DHS) Science and Technology Directorate (S&T) developed a do-it-yourself solution to decontaminate personal protective equipment (PPE) using a programmable multicooker...

‘Moist heat decontamination is achieved by treating masks with 149°F steam for 30 minutes. Key steps include placing the mask(s) in a paper bag, filling the multicooker with a half inch of water and setting the bag on a rack inside of it. S&T verified these conditions inactivate the virus below detectable limits in culture media and simulated saliva, while the masks still meet performance specifications after five treatments...

Read here (US DHS, June 19, 2020)

Full instructions, a video, fact sheet and FAQ about the process are available on the HHS S&T website. View video and download PDFs here

US CDC, in the face of personal protection equipment (PPE) shortages, issues strategies to optimise the supply of PPEs

The strategies of the US Centers for Disease Control and Prevention (CDC) cover eye protection gear, isolation gowns, face masks, N95 respirators and reuse of filtering face respirators and ventilators.

‘CDC’s optimisation strategies for PPE offer options for use when PPE supplies are stressed, running low, or absent. Contingency strategies can help stretch PPE supplies when shortages are anticipated, for example if facilities have sufficient supplies now but are likely to run out soon. Crisis strategies can be considered during severe PPE shortages and should be used with the contingency options to help stretch available supplies for the most critical needs. As PPE availability returns to normal, healthcare facilities should promptly resume standard practices.’

Read here (CDC, April 22, 2020)

Approved: System to decontaminate N95 masks and allow reuse -- as many as 20 times

‘A system to decontaminate N95 masks to allow healthcare workers to safely reuse them -- as many as 20 times -- has been approved by the US FDA. It uses hydrogen peroxide vapour to “destroy bacteria, viruses and other contaminants, including... SARS-CoV-2,” and it can process up to 80,000 masks per day.’

Note: This is interesting. If the principle of decontamination and re-use is acceptable, what other ways can we use to recycle personal protection equipment (PPEs) especially in poor countries?

Read here (Politico, March 29, 2020)