Incidentally, if you want to validate 3M N95 masks, 3M has a web site for that.[1] You type in the code on the bottom of the box and 3M checks it. You can only do this once per code; the site will tell you if a valid code has been used before. They suggest signing and dating the box after doing this, to indicate that check has been done.
Incidentally, if you want to validate 3M N95 masks, 3M has a web site for that.[1] You type in the code on the bottom of the box and 3M checks it. You can only do this once per code; the site will tell you if a valid code has been used before. They suggest signing and dating the box after doing this, to indicate that check has been done.
[1] https://www.3m.com/3M/en_US/worker-health-safety-us/3m-safeg...