Quote from: S.Yu on January 11, 2022, 18:04:53
It may not be one...but it could be one. I don't see anything obvious in its design that prevents it from getting N95 certification. It may obstruct breathing more but probably not more so compared to "passive" N95 masks.
I guess the big question is whether someone makes "N95-grade" filters that fit the mask. If nobody makes such filters, then the claim is misleading. It might be technically possible, but that is of little help to a consumer. Since I live in the EU, I always thought it was a gimmick. If it doesn't have certification, it is useless. As far as obstruction goes, surface area of the filter is going to play a role. And don't forget that many common respirators don't fit that well, for multiple reasons, improving airflow. If that thing seals well around the edges and has tiny filters, it could get interesting.