Gas mask sealing test method

While gas masks are well-known to everyone, the following is a detailed explanation of how gas masks are worn after they are worn.

Only when the gas mask is properly worn and the sealing performance of the mask is effectively tested, it can be ensured that the user does not invade the respiratory tract by toxic gases.

Below, we will introduce two gas mask sealing methods:

I. Gas Mask Positive Pressure Sealing Test

Method: Cover the respirator valve with your palm and blow it slowly outwards.

Criterion: If the gas mask expands slightly after blowing, it means that the mask is intact. If there is no change in the body of the respirator and humans feel that gas is leaking from the face or between the masks, the position of the gas mask needs to be adjusted. First of all, we can adjust the tightness of the headband slightly, and then test again until the seal is intact to enter the toxic substance area.

Second, the gas mask negative pressure sealing test

Explanation: The negative pressure sealing test is mainly aimed at gas mask filter cotton or filter box

Method: Place your fingers against the center of the filter cotton or completely cover the surface of the filter box, then slowly inhale.

Judgment method: If the anti-poison surface has a slight depression and the mask is in close contact with the face, it means that the mask is intact. If a person feels that gas is leaking from the mask or face, the position of the mask must be re-adjusted, the tightness of the headband should be slightly adjusted, and the test should be repeated until it is confirmed that the airtightness is intact.

Whether as a first-time user of a gas mask or a worker who has used a gas mask a number of times, it is imperative to strictly perform the inspection procedures when the mask is worn, and after repeated confirmation, it is possible to work in a hazardous area.

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