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  2. Phosphine - Wikipedia

    en.wikipedia.org/wiki/Phosphine

    Phosphine is a highly toxic respiratory poison, and is immediately dangerous to life or health at 50 ppm. Phosphine has a trigonal pyramidal structure. Phosphines are compounds that include PH 3 and the organophosphines , which are derived from PH 3 by substituting one or more hydrogen atoms with organic groups. [ 4 ]

  3. Chemical cartridge - Wikipedia

    en.wikipedia.org/wiki/Chemical_cartridge

    Legislation in the EU [72] [73] allows an employer to use only supplied air respirators when employees work in conditions where air pollution is IDLH, because of the risk of untimely cartridge replacement. Combined gas and particulate respirator canister for protection against acid gases, the type of BKF (БКФ).

  4. Immediately dangerous to life or health - Wikipedia

    en.wikipedia.org/wiki/Immediately_dangerous_to...

    Such respirators should not use cartridges or canister with the sorbent, as their lifetime is too poorly predicted. In addition, the respirator must maintain positive pressure under the mask during inspiration, as this will prevent the leakage of unfiltered air through the gaps (which occur between the edges of the mask and the face sometimes).

  5. 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 ...

  6. Respiratory protective equipment - Wikipedia

    en.wikipedia.org/wiki/Respiratory_protective...

    Respiratory protective equipment (RPE), also called protective breathing equipment (PBE) in the US, [1] is a form of personal protective equipment designed to protect the wearer from a variety of airborne hazards in the form of a gas, fume, mist, dust or vapour. Respirators filter the air to remove harmful particles and alongside the breathing ...

  7. Powered air-purifying respirator - Wikipedia

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

    A powered air-purifying respirator (PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen , actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...

  8. Trump win has economists concerned US economy will fail to ...

    www.aol.com/finance/trump-win-economists...

    Trump and his proposed policies have been viewed as potentially more inflationary due to the president-elect's campaign promises of high tariffs on imported goods, tax cuts for corporations, and ...

  9. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    Respirator assigned protection factors were also to be updated, along with chemical cartridge requirements. [ 19 ] [ 20 ] On July 10, 1995, in response to respirators exhibiting "low initial efficiency levels", new 42 CFR 84 standards, including the N95 standard, were enforced under a three-year transition period, [ 21 ] ending on July 10, 1998 ...

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