A dust mask is a flexible pad that is attached to the nose and mouth by a resilient or rubber band to prevent dust from being encountered during construction or cleaning activities, such as from drywall, brick, wood, fiberglass, silica (from ceramics) Or glass production) dust, or sweep the floor. You can also wear a dust mask to prevent allergens. Dust masks are worn in the same way as paint masks or surgical masks, but it is dangerous to confuse the three because they each protect against specific airborne hazards. Using the wrong mask for work can create significant and potentially fatal hazards, as many dust masks with various levels of protection may look similar, even masks that may not be completely dust-free, such as paint masks and surgical masks. Inappropriate masks are also a danger because they allow the material to completely bypass the mask. In a mask used to prevent splashing of liquid or mist, proper fit may not be as important. Dust masks are made to prevent certain hazards and to prevent chemicals such as vapors and mists. Therefore, it is dangerous to confuse the dust mask with the paint mask.
Dust masks are cheaper, lighter, and more comfortable than respirators, but may not provide adequate protection and may be more susceptible to misuse or discomfort.
Some dust masks include improvements such as two straps (one upper and one lower) behind the head, an aluminum strip on the outside of the bridge of the nose that can be bent for customization, and a foam strip rubber on the inside of the bridge of the nose, even The outer aluminum is not suitable and it also ensures a good seal.
Dust masks can also be used to prevent the inhalation of dust or sand in sandstorms or black blizzards.
A gas mask is a mask that protects the user from inhaling airborne pollutants and toxic gases. The mask forms a sealed covering over the nose and mouth, but can also cover other fragile soft tissues of the eyes and face. Some gas masks are also respirators, although the term gas mask is often used to refer to military equipment (such as field protective masks). The user of the gas mask is not protected by the gas that the skin can absorb. Most gas mask filters will last for about 24 hours in nuclear biochemistry (NBC).
Toxic substances in the air can be gaseous (eg, sulfur mustard and chlorine) or particulates (eg, biological agents). Many gas masks include two types of protection. Use gas masks in buildings to prevent welding fumes, prevent asbestos or other harmful particles during removal, and in the chemical industry when handling hazardous materials, such as cleaning up or spilling equipment; workers usually issue gas masks as Preventive measures against leakage.
Police and demonstrators often use gas masks during demonstrations and protests by riot police using tear gas or CS gas. In addition to providing functional use, gas masks are used as a symbol in industrial music, the most famous of which is a subclass of drums and bass, called neurofunk. These signs are used by graffiti labels because they protect them from the toxic fumes of paint cans, and urban explorers can venture into environments where harmful substances such as asbestos may be present.
The traditional gas mask style has two small rounded eye windows. The only suitable material that originates from these eye windows is glass or acrylic; since glass is known to be fragile, the glass eye window must be kept small and thick. Later, the discovery of polycarbonate gave the gas mask a large, comprehensive window. Some people have one or two filters attached to the mask, while others have a large filter attached to the mask with the hose, sometimes confused with the respirator