Have you got any idea on what a gas mask is? If not, then the first thing that you have to know is that it can be bought from army surplus stores. Yes, a gas mask is a safety mask worn by people to protect their eyes, face as well as their lungs by filtering the air that they breathe. Army surplus stores are the leading supplier of gas masks.
Scientists, crime scene investigators, firefighters and even welders are most likely the kind of people that need this kind of safety supply. With breathing masks, you can do your job without facing the risk of being contaminated from any harmful chemicals.
Aside from this, face masks would also protect your work or evidence from being contaminated with contaminants that your body. Of course, masks aren't just used in a work environment. Every household may also benefit from these safety supply items. They may come in handy during emergency situations or as protection during fumigation schedules.
There are different kinds of masks. There are full face masks and there are also half face ones. Running to a safety supply store and asking sales personnel doesn't guarantee a good face mask. Knowing the different types of breathing units is still highly advisable.