Business And Management

Different Types of Gas Masks

There are two types of additional gas masks on the market today: supplied air and self-contained breathing apparatus (SCBA). There are also various other types of gas masks available in the market. You can choose from a wide variety of gas masks and filters. You can also find gas mask hood through

The supplied-air respirator utilizes the same filter as an air-purifying respirator; however, the filter is attached to a battery-operated canister instead of placed directly on the mask.  The tube utilizes a small fan that passes the air through the filter and purifies it through a hose. It offers the advantages of positive pressure from the air forced into the mask. Therefore, any leak causes purified air to escape instead of contaminated air entering. Although much safer than the aforementioned gas masks, there are two disadvantages:

  • The battery can die
  • The filter does not last long

The optimal system is SCBA which is a apparatus used by firefighters. The air tank on their back contains high pressure pure air and is similar to the scuba diver tank. There is air transfer from the tank to a face mask so as to provide optimal protection.

How the filter operates

The respirators tend to boast filters that purify air. However, it also has to eliminate bacteria, chemicals and poisons from the air. Therefore, all air filters utilize one or more of the three purification methods:

  • Particle filtration.
  • Chemical absorption
  • Chemical reaction
  • Particle filtration.

Of the three methods, particle filtration is the simplest. Basically, the filter mask uses a fine particulate filter that captures the particle size as small as 0.3 microns. However, this must be replaced as often as possible because it clogs.