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Classification of gas mask canisters, how to choose a gas mask canister

In industrial environments and public places, we all need to use gas masks. Different types of gas masks are used in different places. The protective effect of the gas mask comes from the isolation of the mask on the one hand, and the filtering and adsorption function of the filter canister on the front of the mask. The filter canister is the key to the anti-virus. The canister needs to be replaced after it has been used for a certain period of time or after it has expired. However, the variety of the canister is very diverse, and the wrong choice will only have no protective effect. So how do we choose the right canister? Let's first understand its model and type.


Types of gas mask filter tanks

Filter tanks are generally divided into 5 types, namely A type, B type, E type, K type, and CO type. In addition, Hg type, H2S type, and CH2O type have been developed according to special occasions. Below are different types of filter tank Object of protection:


category

A

B

E

K

CO

Hg

H2S

CH2O

color flag

brown

gray

yellow

green

white

red

blue

pink

Examples of protection objects

Benzene, aniline,
Carbon tetrachloride,
Nitrobenzene, bitter chloride

Hydrogen chloride
Hydrocyanic acid, chlorine

SO2

NH3

CO

Hg

H2S

CH2O



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