The old story, about this poison mask

On October 13, 1914, Garrett Morgan was granted a patent for inventing a poison gas mask. Products that are very diverse now. Vietnam also has its own gas mask for brands .

Garret Morgan and his reputation mask At first, this device was simple; consists of a hooded cloth cap and a rear-mounted air vent. These devices allow the wearer to breathe in the event of increased smoke in the air. However, his poison gas mask only resists common gases, such as smoke or dirt.
On July 25, 1916, gas masks were invented by Morgan, helping save some workers in the blast of a water tunnel under Lake Erie in Cleveland, Ohio. Soon after, Morgan's respirator company received numerous orders from fire departments across the United States. During World War I, Morgan masks were improved to be used by the US military.

During World War II, soldiers of the British French coalition were in trenches, on the battlefield, a quiet night covered. Suddenly, from the direction of Germany's battle field, it flew to a gaseous yellow-green gas, like a ghostly fog following the wind blowing into the battlefield of the British French Army. Soldiers who were not on guard suddenly panicked, in the trenches, everywhere were screams and screams . The cause was caused by the poisonous chlorine gas released by the German army, which was also the poison gas used for the first time in Modern warfare. With this toxic gas release, Germany opened the war for chemistry.

To cope with toxic chemicals in chemical weapons, scientists have conducted research in a short time. Just looking for detoxifiers is not enough, it is necessary to find ways to cope with all poisonous outbreaks.

Based on the difference of chemical toxins and oxygen, chemists have discovered a substance that can resist toxic gases, which is activated carbon. Under conditions separate from air, allowing wood charcoal to heat up in the water, increase heat, remove the oil floating on the surface from the gaps of coal will make the coal lines more smooth, surface area. face will be bigger. Wood charcoal, after being processed like that, is called activated carbon.

Currently, the respirator used to filter the air is made up of a mask, including a poison net and a facade bag. In the filter net there is a smoke filter. Filter smoke can filter toxic smoke, toxic fog, drops of solution and relatively large dust. In order to improve the effectiveness of the prevention of poisoning, first, it is necessary to soak activated carbon in a solution containing silver, copper, chromium, making the outer layer of coal containing a small amount of oxidized silver, oxidized copper, chromium oxidize.

When toxic gas rises immediately, it is absorbed by activated carbon, under the catalytic effect of oxidized silver, oxidized copper, chromium oxidation arises chemical reaction with oxygen, becoming non-toxic material. When toxic gas is filtered, the process of poisoning also takes place simultaneously, oxygen is constantly supplied to human respiration.

Inventing this gas mask, scientists have given mankind an extremely important device not only in the fight against chemical wars but also because of its excellent application in current scientific research.

Gas masks for Vietnamese brands

Masking produced in Vietnam To protect workers in public production and agriculture when exposed to vapor, toxic gases need to have personal protective equipment. Researchers from the Institute of Materials Chemistry (Center for Military Science and Technology), and Center for Environmental Treatment Technology (Chemical Command) have designed and manufactured semi-finished products successfully. Multipurpose poison room (BMN) mask with specialized room filters to prevent all kinds of vapors, toxic gases, dew, smoke, toxic dust and toxic biological agents.
BMN structure includes: Rubber cover for nose and mouth with strap and inhalation, exhalation and toxic filter system. Rubber shooting is designed according to the anthropometric data of Vietnam. The ventilated valve box is placed in the position in front of the nose, assembled with rubber shooting according to the tuck structure. The filter box is placed under the chin, assembled with rubber shooting thanks to the threaded structure. The inhalation valve is placed in the neck of the filter box, inside the rubber shoot. The strap has a strap attached with a rubber band, fixed with a pin, which can adjust the tightness of the strap with the adjustment key.

Results of testing and evaluating the quality of BMN products show that the structure is durable, compact, light, easy to use, convenient for storage. Sleek, harmonious design, consistent with user psychology. Technical specifications are equivalent to foreign products of the same type, meeting all requirements to be put into use in the field of labor protection, disease prevention, terrorism prevention and civil defense in Vietnam.