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In the US, in order for a mask to be labeled "medical", that mask must be approved by the FDA as a medical device. With so many new people manufacturing masks coupled with the public demand for masks, it is likely not profitable to delay to seek FDA approval. The FDA also is unlikely to approve a new manufacturer's mask without ASTM testing. Thus, ...


4

Masks with exhalation valves are meant to be used to protect against particulates like sawdust or smoke. They must not be used in a pandemic because a large part of the usefulness of masks is preventing people who are infected and don't know it from spreading the virus. If you have an exhalation valve on your mask you're exposing everyone around you. Public ...


3

Typically for an N95 mask to be considered "medical grade" it must be compatible with a sterile environment, such as by filtering both inhaled and exhaled air. Surgical masks provide some filtration of exhaled air, which is why they're useful in surgury (e.g. keep saliva off an operating region). I have an N95 mask advertised for environments with ...


3

Those are face shields to prevent primarily droplets reaching the eyes, and are worn as being more comfortable than goggles to protect the mucous membranes of the eyes, and they don't fog up like goggles can. However, they don't protect against droplet nuclei which float in the air, and there is no regulated design. Face shields are PPE that are commonly ...


2

This answer is based on experience and common sense, as there are no studies giving a definitive answer. There are plenty of studies about decontamination of surfaces, but none that I know of comparing gloves to skin. There is a paper discussing decontamination of gloves, though. Also another opinion piece on disinfecting gloves instead of hands when gloves ...


2

In an ideal world everyone would have full body Ebola type protection. In the world of practicality, the WHO has advised that this is a droplet, and surface spread infection. However, it is not discounting the possibility of aerosols especially during some medical procedures eg. induced coughing, and then a potentially ill fitting mask and goggles may not ...


2

Particle Size-Selective Assessment of Protection of European Standard FFP Respirators and Surgical Masks against Particles-Tested with Human Subjects The tested FFP respirators and SMs in this study were observed to have the worst protection against particles between 0.263 and 0.384 μm. The protection factors of FFP respirators against particles in the ...


1

The mask protects people from the person wearing the mask. In surgery, my colleagues and I wear a mask to protect the patient's open wound from me. Do not make the mistake of thinking that you, as the mask wearer, are conferring a degree of protection that provides safety.


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