Without testing, I would assume the imitation filters have similar performance characteristics to the “fraudulent” [1] ones NIOSH recently tested. They did better than I would have expected, but the differences were still significant. Maybe the imitations have a use case for particularly cost-conscious users, or for those who want a stockpile for friends and neighbors.
The fraudulent models generally included NIOSH markings (e.g., P100) that were not authorized. As far as I know, they did not include fake 3M markings.
Without testing, I would assume the imitation filters have similar performance characteristics to the “fraudulent” [1] ones NIOSH recently tested. They did better than I would have expected, but the differences were still significant. Maybe the imitations have a use case for particularly cost-conscious users, or for those who want a stockpile for friends and neighbors.
The fraudulent models generally included NIOSH markings (e.g., P100) that were not authorized. As far as I know, they did not include fake 3M markings.