Re:Estimated 1.56B face masks will have entered oceans in 2020
by luto on Tuesday December 15, 2020 @04:13PM
(#25435326)
"Recommended Application" for one of these masks:
> Assembly and Mechanical, Chemical Clean-up, Chemical Handling, Chipping, Chiseling, Cleaning, Furnace Operations, Grinding, Laboratories, Machining, Masonary, Painting, Pouring/Casting, Sanding, Sawing, Welding
They are intended to protect yourself from the environment, not the other way around. So they come with incoming filters only. To change that, a retrofit filter is needed.
> Assembly and Mechanical, Chemical Clean-up, Chemical Handling, Chipping, Chiseling, Cleaning, Furnace Operations, Grinding, Laboratories, Machining, Masonary, Painting, Pouring/Casting, Sanding, Sawing, Welding
They are intended to protect yourself from the environment, not the other way around. So they come with incoming filters only. To change that, a retrofit filter is needed.
https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-...