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2. Motorcycle personal protective equipment - Wikipedia

   en.wikipedia.org/wiki/Motorcycle_personal...

   Full-face helmets offer much more protection than open-face helmets. [16] Several manufacturers have introduced full-face helmets with a flip-up front, combining the protection of a full-face with the ease of communication and donning or doffing that an open-face gives. [15]: 50 Studies have consistently shown that wearing a helmet: [17] [18]

3. Respirator assigned protection factors - Wikipedia

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

   Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).

4. Personal protective equipment - Wikipedia

   en.wikipedia.org/wiki/Personal_protective_equipment

   There are two main types of respirators. One type of respirator functions by filtering out chemicals and gases, or airborne particles, from the air breathed by the user. [5] The filtration may be either passive or active (powered). Gas masks and particulate respirators (like N95 masks) [6] are examples of this type of respirator. A second type ...

5. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   A surgical mask may not block all particles, due to the lack of fit between the surface of the face mask and the face. [45] The filtration efficiency of a surgical mask ranges between 10% and 90% for any given manufacturer, when measured using tests required for NIOSH certification.

6. Orinasal mask - Wikipedia

   en.wikipedia.org/wiki/Orinasal_mask

   An orinasal mask, oro-nasal mask or oral-nasal mask [1] is a breathing mask that covers the mouth and the nose only. It may be a complete independent item, as an oxygen mask , or on some anaesthetic apparatuses, or it may be fitted as a component inside a fullface mask on underwater breathing apparatus , a gas mask or an industrial respirator ...

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