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2. Non-Rebreather Mask: Purpose, When It’s Used, and More - WebMD

   www.webmd.com/lung/what-to-know-non-rebreather-masks

   Non-rebreather masks are designed to deliver a lot of extra oxygen to your airway. The normal fraction of inspired oxygen (FIO2), or concentration of oxygen in the air, in any room is about 21% ...

3. Gas mask - Wikipedia

   en.wikipedia.org/wiki/Gas_mask

   A typical industrial-grade gas mask for hazardous chemicals and dust A World War I British P Helmet c. 1915 Zelinsky–Kummant protivogaz, designed in 1915, was one of the first modern-type full-head protection gas masks with a detachable filter and eyelet glasses, shown here worn by U.S. Army soldier (USAWC photo) Indian muleteers and mule wearing gas masks, France, February 21, 1940 A Polish ...

4. Non-Rebreather Masks: Uses, How They Work, and More - Healthline

   www.healthline.com/health/non-rebreather

   Takeaway. A non-rebreather mask is used to deliver 70 to 100 percent oxygen if you need high-concentration oxygen but don’t need help breathing. Covering both the nose and mouth, a non ...

5. Joint Service General Purpose Mask M-50/M-51 - Wikipedia

   en.wikipedia.org/wiki/Joint_Service_General...

   2006–present. Specifications. Weight. 1.9 lbs (M50) The M50 series protective mask, officially known as the Joint Service General Purpose Mask ( JSGPM or JSGPM/M50 ), is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories. It was adopted by the U.S. military in 2006 and is manufactured by ...

6. Escape breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Escape_breathing_apparatus

   Polish Au-2 escape respirator. Escape breathing apparatus, also called escape respirators, escape sets, self-rescuer masks, emergency life saving apparatus (ELSA), emergency escape breathing devices (EEBD), and Respiratory Protective Smoke Escape Devices (RPED), are portable breathing apparatus that provide the wearer with respiratory protection for a limited period, intended for escape from ...

7. Non-Rebreather Mask Function and When Doctors Use It - Healthline

   www.healthline.com/health/rebreather-mask

   A non-rebreather mask can deliver between 60 percent to 80 percent oxygen at a flow rate of about 10 to 15 liters/minute (L/min). They’re useful in situations when people have extremely low ...