Home›Air pollution›NIOSH air filtration rating🌐EnglishEnglishالعربيةفارسی中文EntityQ23582148· pop 6· linked from 266 articlesNIOSH air filtration ratingAlso known as NIOSH ratingsrating system for respirators designed to protect against contaminated air particlesWikidata factsImageDHHS Pub 96-101 NIOSH Guide to the Selection & Use of Particulate Respirators Certified Under 42 CFR 84.pdfvia Wikidata · CC0Available in 6 languages中文العربيةMalaysimpleفارسیvia Wikidata sitelinks · CC0ConnectionsrebreatherEntitysodium chlorideEntityCategoriesAir pollutionNational Institute for Occupational Safety and HealthOccupational safety and healthRespirators