At MasksFacial.com you will be get awared with the gas mask. A gas mask is a mask worn over the face to protect the body from airborne pollutants and toxic materials. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Airborne toxic materials may be gaseous or particulate. Many gas masks include protection from both types. Gas masks used in World War I were made as a result of poison gas attacks that took the Allies in the trenches on the Western Front by surprise. Unlike other breathing devices, gas masks do not require the user to carry an air supply as in the use of scuba gear. However, this means that the wearer depends on the air in the atmosphere, the same medium of the toxic materials. Thus, the mask must remove them and relay clean air to the wearer. There are three main ways of achieving this: filtration, absorption and adsorption, and reaction and exchange. It can also be defined as a breathing device designed to protect the wearer against harmful substances in the air.

The typical gas mask consists of a tight-fitting facepiece that contains filters, an exhalation valve, and transparent eyepieces. It is held to the face by straps and can be worn in association with a protective hood. Masks may be designed to carry their own internal supply of fresh air, or they may be outfitted with a filter to screen out harmful contaminants. The latter type, known as an Air Purifying Respirator (APR), consists of a tight-fitting face piece that contains one or more filter cartridges, an exhalation valve, and transparent eye pieces. A full-face gas mask consists of a filter cartridge, flexible face covering piece, transparent eye lenses, and a series of straps and bands to hold the device snugly in place. The filter cartridge is a plastic canister 3-4 inches (8-10 cm) across and 1 inch (2.5 cm) deep, which contains a filtration aid. Carbon based filtrants are commonly used because they can adsorb large quantities of organic gases, especially high molecular weight vapors like those used in chemical warfare. This is all what about Gas mask. For more information please contact us at MasksFacial.com.