Oxygen Mask

Product Description Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An oxygen mask provides a method to transfer breathing oxygen gas from a storage tank to the lungs. Oxygen masks may cover the nose and mouth (oral nasal mask) or the entire face (full-face mask). They may be made of plastic, silicone, or rubber. Plastic masks are used primarily by medical care providers for oxygen therapy because they are disposable and so reduce cleaning costs. As they are light in weight, they are more comfortable than some other masks, incr
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