Performance of the nose mask
I wear HEPA nose mask for 2.5 hours to package the activated carbon bag. There is dust during the package. All the dust is brocked on filter.
There is no air leaking at all. The nose is very clean no carbon dust.
I wear HEPA nose mask for 2.5 hours to package the activated carbon bag. There is dust during the package. All the dust is brocked on filter.
There is no air leaking at all. The nose is very clean no carbon dust.