What kinds of gas masks are there? Under what circumstances are they used respectively?

According to the protection principle, it can be divided into filter gas mask and isolation gas mask.

1, filter the gas mask

Application: Lighter canisters or filter elements (about 200g) can be directly connected to the mask, while heavier canisters are connected to the mask through air ducts.

The filter gas mask consists of a mask and a canister. The mask comprises a mask body, an eye window, a speaker, a breathing valve and a headband. The carbon canister is used for purifying toxic gases, and comprises a carbon canister and an adsorbent. These two materials can also be mixed to make filter plates and assembled into filter elements.

2. Isolated gas mask

Usage: the isolated mask is mainly used in high-concentration polluted air (when the volume concentration is greater than 1%), or in special occasions such as high altitude, underwater or oxygen-deficient closed cabin.

The mask itself provides oxygen, which is divided into three types: gas storage type, oxygen storage type and biochemical oxygen type. The main body of the comprehensive cover is made of high-quality silica gel, which is anti-aging, anti-allergic, durable and easy to clean.

Extended data:

Precautions for use

1. When using the mask, wear it upward from the chin, and then adjust the headband appropriately. After wearing a mask, block the air inlet of the filter box with your palm and inhale hard. If the mask is close to the face and will not leak, it means that the mask is airtight and can work in dangerous drug-related areas.

2. After using the mask, wipe all parts of the mask with sweat and stolen goods, especially the lens and exhalation valve. The suction valve should be kept clean. If necessary, the mask part can be washed with water and the filter box part should be wiped clean.

3. After being used in an infectious virus environment, the masks and filter boxes can be wiped, cleaned and disinfected with 1% peroxycaproic acid disinfectant. If necessary, the mask can be soaked in 1% peracetic acid disinfectant, but the filter box cannot be soaked or used with water to prevent failure. Moreover, after disinfection with disinfectant, it should be wiped with clear water and dried before use.

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