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  2. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    NPPTL is the designated publisher of the NIOSH Certified Equipment List, or CEL. The CEL is a public domain database that details the respirators currently approved by NIOSH, and is ordered separated based on type of respirator, which is designated with a schedule (e.g. TC-84A). [28] The CEL was initially released in paper form on September 30 ...

  3. Mechanical filter (respirator) - Wikipedia

    en.wikipedia.org/wiki/Mechanical_filter_(respirator)

    The most common of these is the white, disposable standard N95 variety; another type is the Surgical N95 mask. It is discarded after single use or some extended period depending on the contaminant. NIOSH recommends not reusing filtering facepieces in biosafety level 2 or 3 laboratories. [13]

  4. Powered air-purifying respirator - Wikipedia

    en.wikipedia.org/wiki/Powered_air-purifying...

    According to the NIOSH Respirator Selection Logic, PAPRs are recommended for concentrations of hazardous particulates or gases that are greater than the relevant occupational exposure limit but less than the immediately dangerous to life or health (IDLH) level and the manufacturer's maximum-use concentration, subject to the respirator having a ...

  5. N95 respirator - Wikipedia

    en.wikipedia.org/wiki/N95_respirator

    An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

  6. File:Filtering out Confusion - Frequently Asked Questions ...

    en.wikipedia.org/wiki/File:Filtering_out...

    This image is a work of the National Institute for Occupational Safety and Health, part of the Centers for Disease Control and Prevention in the United States Department of Health and Human Services, taken or made as part of an employee's official duties.

  7. National Institute for Occupational Safety and Health

    en.wikipedia.org/wiki/National_Institute_for...

    NIOSH was created by the Occupational Safety and Health Act of 1970 [27] and began operating in May 1971. [25] It was originally part of the Health Services and Mental Health Administration, and was transferred into what was then called the Center for Disease Control (CDC) in 1973. [27] NIOSH's initial headquarters were located in Rockville ...

  8. Where to Find the Best NIOSH-Approved KN95, N95 and KF94 ...

    www.aol.com/where-best-niosh-approved-kn95...

    There are seven classes of filters for NIOSH-approved filtering face respirators available right now. The minimal level of filtration approved by NIOSH is 95 percent. The N, R and P designations ...

  9. File:Three Key Factors Required for a Respirator to be ...

    en.wikipedia.org/wiki/File:Three_Key_Factors...

    This image is a work of the National Institute for Occupational Safety and Health, part of the Centers for Disease Control and Prevention in the United States Department of Health and Human Services, taken or made as part of an employee's official duties.