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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). [50] The CEL was initially released in paper form on September 30 ...

  3. 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 [25] and began operating in May 1971. [23] 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. [25] NIOSH's initial headquarters were located in Rockville ...

  4. 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.

  5. Mechanical filter (respirator) - Wikipedia

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

    Under the current revision of Part 84 established in 1995, NIOSH established nine classifications of approved particulate filtering respirators based on a combination of the respirator series and efficiency level.

  6. Respirator assigned protection factors - Wikipedia

    en.wikipedia.org/wiki/Respirator_Assigned...

    The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...

  7. 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 ...

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  9. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    PASS device (personal alert safety system), also known as ADSU (automatic distress signal unit) – Device used to set off an alarm when a firefighter is in distress; SCUBA – Self-contained underwater breathing apparatus; Smoke hood, also known as Short Term Air Supply (STAS) – Device to protect the user from smoke inhalation in an emergency