Since then it has evolved gas masks to protect against all types of chemical and biological materials known. gas masks use different techniques to protect users. But common components such as the face piece, hood, eyepieces and filters are present in almost all the masks. You can check this useful reference to know more about gas masks online.
The most basic masks are using filtration techniques. Pollutants generally have larger particles of oxygen and by using either the mesh can be kept out. The only drawback is that the air supply is also limited in this process. Other processes using quality absorb certain chemicals such as activated charcoal to control harmful agents. The mask has been in limited use, because they are able to absorb only a few chemicals. Now the mask using a chemical neutralization method. This mask contains a chemical filter that neutralizes harmful chemicals present in the air. Some also have a tube for drinking water, communication systems and winterization kits to prevent fogging during cold weather conditions.
This mask provide adequate protection only for the face and internal organs. Chemicals have now been developed that affect the skin and can be used in future terror attacks and war zones. The suit body protector attached to the mask is a good choice to counter harmful affects of these chemicals.
Chemical and biological agents have been used in the past and will be used again. The armed forces, along with other researchers, working together to improve the quality of the existing mask and developing new protection systems. This will help them to operate in the disturbed areas without risking their lives.