OPINION of the French Agency for Food, Environmental and Occupational Health & Safety on the estimation of potential risks associated with wearing masks treated with silver zeolite and silver-copper zeolite
As part of efforts to control the COVID-19 pandemic, recommended barrier gestures include
wearing a mask, particularly when social distancing is impossible. Masks are compulsory in all
public areas, whether open or closed, as well as in most workplaces.
Excluding a number of specific work situations where masks are required as personal protective
equipment, the protective face coverings worn to control the spread of the COVID-19 pandemic
can be made of washable and reusable cloth. Using washable cloth masks prevents a significant
amount of waste.
In this context, the company Hanes France has brought to market cloth masks comprising three
superimposed layers of white cotton jersey. To produce these masks, Hanes conducted tests to
demonstrate their compliance with technical requirements relating to air permeability and to the effectiveness of particle filtration for non-medical use.
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