Many gas masks include protection from both types.
Field Protective Mask, etc.) Airborne toxic materials may be gaseous (for example the chlorine gas used in World War I) or particulate (such as many biological agents developed for weapons such as bacteria, viruses and toxins). Some gas masks are also respirators, though the word gas mask is often used to refer to military equipment (e.g. 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. Manufactured to the IDF (Israel Defense Forces) specificationsĪ gas mask is a mask worn over the face to protect the body from airborne pollutants and toxic materials. Charcoal absorbs and holds a fairly large volume of poisonous gases.Provide protection against all chemical and biological warfare The most common filters employ fibre screens (to strain out finely divided solid particles) and chemical compounds such as charcoal (to capture or chemically alter poisonous gases in the air). The filters, which can be replaced, clean the air but do not add oxygen to it (some masks are connected by a hose to a separate tank of oxygen). The filter elements in the cheeks of the mask remove contaminants from the air that is drawn through the mask by the wearer’s inhaling. It is held to the face by straps and can be worn in association with a protective hood. The typical gas mask consists of a tight-fitting facepiece that contains filters, an exhalation valve, and transparent eyepieces. Gas mask, breathing device designed to protect the wearer against harmful substances in the air. Observe English schoolchildren practicing using gas masks in case of a chemical attack amid World War II Public Domain See all videos for this article SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.
GAS MASK MILITARY HOW TO