The Correct Way To Wear Half-face Gas Mask

- Sep 01, 2020-

Protecting different gases Equipped with different gas filter cartridges, which can be used to protect a variety of gases, vapors and particulate matter, with a wide range of applications. Like a self-priming filter gas mask, it uses the human body's own breathing pressure to breathe clean oxygen into clean oxygen after filtering external toxic substances through the gas mask filter box. But the prerequisite must be sufficient oxygen content in the working environment. Therefore, the correct wearing of gas masks is particularly critical.


1. Correct wearing method

1. Untie the bottom buckle at the beginning and cover the mouth and nose with the mask;


The correct way to wear 3M half-face gas mask


2. Pull up the upper end of the head strap to place the head comfortably on top of the head;


The correct way to wear 3M half-face gas mask


3. Buckle the bottom of the hood with both hands behind the neck;


The correct way to wear 3M half-face gas mask


4. Adjust the tightness of the headband to make the mask fit well with the face. First adjust the front headband, and then adjust the headband behind the neck. If the headband is too tight, you can push the plastic sheet outward with your fingers to relax the headband.


The correct way to wear 3M half-face gas mask


2. Airtightness inspection method

1. Positive pressure tightness test


Cover the exhalation valve with the palm of your hand and exhale slowly. The mask should expand slightly. If air leaks from your face and between the mask, re-adjust the position of the mask and adjust the tightness of the headband to achieve a tight fit Good. If your mask does not fit well with your face, please do not enter the contaminated area and ask your supervisor.


The correct way to wear 3M half-face gas mask

The correct way to wear 3M half-face gas mask

2. Negative pressure tightness test


The user's thumb of the filter cotton is pressed against the center part of the filter cotton and gently inhales, the mask should be slightly collapsed and moved closer to the face. If you feel air leaking from your face and between the mask, please re-adjust the position of the mask and adjust the tightness of the headband to achieve a good fit. If your mask does not fit well with your face, do not enter the contaminated area. And ask your security supervisor.


The user of the drug filter box covers the surface of the drug box with his palm and gently sighs. The mask should collapse slightly and move closer to the face. If your citrus gas leaks from your face and between the mask, please re-adjust the position of the mask and adjust the tightness of the strap to achieve a good fit. If your mask does not fit well with your face, do not enter the contaminated area. And ask your security supervisor.