If you want more chance of getting a genuine mask compared to amazon, then find a local reputable business or chain in a town near you where tradespeople / contractors go. Preferably an authorised distributor.
Chances are that if you buy a mask from there with the ratings and markings that you want, then it will be legit if it is from a known brand, and have gone through third party testing by a competent authority. Contractors buy the masks all the time for themselves or their crews, so that they don’t get work related respiratory illnesses, have a long career, satisfy OSHA etc. and not get sued.
If you want more chance of getting a genuine mask compared to amazon, then find a local reputable business or chain in a town near you where tradespeople / contractors go. Preferably an authorised distributor.
Chances are that if you buy a mask from there with the ratings and markings that you want, then it will be legit if it is from a known brand, and have gone through third party testing by a competent authority. Contractors buy the masks all the time for themselves or their crews, so that they don’t get work related respiratory illnesses, have a long career, satisfy OSHA etc. and not get sued.