I’m curious whether “normal” is meant to simulate a proper OSHA-approved fit, or “how normal people wear masks”. My impression was that the OSHA fit test standard for N95 masks was meant to achieve an extremely high-quality seal—they test with volatile substances, and you fail if you can smell them. (https://www.osha.gov/video/respiratory_protection/fittesting_transcript.html) It seems like the “normal” setting here is probably a lower standard than what an OSHA fit is supposed to achieve, whereas “fully sealed” (with tape) is possibly higher.
Wrong link, should be https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306645/.
I’m curious whether “normal” is meant to simulate a proper OSHA-approved fit, or “how normal people wear masks”. My impression was that the OSHA fit test standard for N95 masks was meant to achieve an extremely high-quality seal—they test with volatile substances, and you fail if you can smell them. (https://www.osha.gov/video/respiratory_protection/fittesting_transcript.html) It seems like the “normal” setting here is probably a lower standard than what an OSHA fit is supposed to achieve, whereas “fully sealed” (with tape) is possibly higher.
Fixed, thank you.