3M 1860 N95 manufactured by 3M

Check out the results here: https://www.armbrustusa.com/blogs/mas...


Testing Methodology: In these videos we test mask breathability and filtration on our Particulate Filtration Efficiency Machine (PFE).

Find out more:
•The Four Things to Look for in a Mask:    • 4 Things to Look For in a Mask  
•How Does a PFE Machine Work:    • How Does A Particulate Filtration Eff...