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  2. Respirator fit test - Wikipedia

    en.wikipedia.org/wiki/Respirator_fit_test

    However the newer OSHA Fast Fit Protocols for CNC methods, and introduction of newer instruments, have made all quantitative fit test devices equivalent in price and time required for testing. The CNP method has at present about 15% of the fit test market in industry. [25] The Current CNC instruments are the PortaCount 8040 and the AccuFIT 9000.

  3. Respirator assigned protection factors - Wikipedia

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

    Fit testing of tight-fitting masks of negative-pressure respirators became widely used in US industry in 1980-s. At the beginning, it was thought that the half-mask fit quite well to the worker's face, if during a fit test the protection factor (fit factor) is not less than 10 (later, experts began to use "safety factor" = 10 during the fit ...

  4. Respirator - Wikipedia

    en.wikipedia.org/wiki/Respirator

    A study found that 80–100% of subjects failed an OSHA-accepted qualitative fit test, and a quantitative test showed between 12 and 25% leakage. [ 46 ] A CDC study found that in public indoor settings, consistently wearing a respirator was linked to a 83% lower risk of testing positive for COVID-19, as compared to a 66% reduction when using ...

  5. TMI Group of Companies - Wikipedia

    en.wikipedia.org/wiki/TMI_Group_of_Companies

    The TMI Group of Companies is a multi-national organization that manufactures and markets physical property testing instruments for the packaging, paper, pulp, plastic film, foil, ink, coatings, nonwoven, textile, adhesives, and corrugated industries.

  6. Machine element - Wikipedia

    en.wikipedia.org/wiki/Machine_element

    While generally not considered to be a machine element, the shape, texture and color of covers are an important part of a machine that provide a styling and operational interface between the mechanical components of a machine and its users. Machine elements are basic mechanical parts and features used as the building blocks of most machines. [2]

  7. Fit testing - Wikipedia

    en.wikipedia.org/wiki/Fit_testing

    Fit testing may refer to: Fecal immunochemical testing; Hearing protection fit-testing; Respirator fit test This page was last edited on 17 ...

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