Hi there, thanks for taking the time to create this article. You wrote that the RZ Mask isn’t NIOSH approved and i’m a little confused. On the website, their report (https://rzmask.com/pages/technical-information) by Nelson Labs whom tested the masks showed that each filter (F1-3) met the acceptance criteria. I’m no expert but doesn’t that mean it has indeed passed the NIOSH standard criteria or am I wrong? Though the lack of them saying that it is actually certified is concerning…