Work Place Protection
Below are a few quick notes stemming from various product searches. Nothing dramatic, just a few anchors ("notes to self") to jump start memory next time this comes up. I don't have any ties to 3M. Just picked them as a starting point because they are a reputable company in this area. Concepts learned here are helpful when checking out other vendor's solutions.
Air pollution and contamination
Notes on dusk mask classifications
Letters: N ... particulates, no oil, number thereafter indicates efficiency ( N95, N99, N100 stands for 95%, 99%, 99.97% efficiency) R ... particulates & oil up to 8 hours P ... particulates & oil, based on manufacturers recommendation ( and liquids, 8 hours lifetime Numbers: 95 ... filters 95 particles out of 100 99 ... filters 99 particles out of 100 100 ... filters 99.97 particles out of 100 Example classifications: N95 P100 References: https://www.ehss.vt.edu/uploaded_docs/201402031829220.NRP%20Designations.pdf https://www.envirosafetyproducts.com/resources/dust-masks-whats-the-difference.html https://www.coopersafety.com/respirator-types
Sample 3M links:
Specific particulate filter data sheet: https://multimedia.3m.com/mws/media/905717O/3m-6000-series-particulate-filters-6035-6038-tech-data-sheet-pdf.pdf Overview of cartridges: http://multimedia.3m.com/mws/media/565214O/3m-cartridge-filter-guide-and-brochure.pdf?fn=CartridgeFilterGuide_pgs_HR.pdf Selection guide: https://multimedia.3m.com/mws/media/40744O/3m-respirator-cartridge-and-filter-selection-poster.pdf