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[GB 2626 2006, definition 3.17] 3.12 Dead space It refers to the volume of the re inhaled gas from the previous exhalation, eed by the volume fraction of carbon dioxide in the inhaled gas. 3.13 Face mask belt It refers to the belt used to fix the mask to the head and face. 4 Classification, grading and marking . …

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Apr 02, 2020 · In the United States, all N95 respirators used in occupational settings are approved by the National Institute for Occupational Safety and Health (NIOSH) and used in accordance with OSHA standards. A surgical N95 respirator is a NIOSH-approved N95 respirator that has also been cleared by the FDA as a surgical mask.

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NIOSH uses very high standards to test and approve respirators for occupational uses. NIOSH-approved disposable respirators are marked with the manufacturer’s name, the part number (P/N), the protection provided by the filter (e.g., N-95), and “NIOSH.” This information is printed on the facepiece, exhalation valve cover, or head straps.

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Full text of "Asia Pacific Fire (2006)" - Internet Archive

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