How to choose a gas mask correctly?

Hello, you can consider from the following aspects.

1. Gas mask material: (rubber and silicone)

The traditional gas mask is made of rubber, but the rubber material is easy to age, and a small number of people with sensitive skin will be allergic to it.

Now the upgraded silicone material on the market has better comfort, softer facial fit, good oil resistance and is not easy to age.

2. Filter box (or canister): (single filter box and double filter box)

Gas masks need to be equipped with filter boxes or canisters, which are generally divided into single filter boxes and double filter boxes. The advantage of double filter box is that it reduces the wearer's respiratory resistance and the filtering effect is more obvious. The advantages of single filter box are less filter boxes, light weight and less weight borne by the wearer's head.

3. Type of gas mask: (half mask and full mask)

A half mask can only protect the nose and mouth, and a full face mask can protect the whole face. If the environment used is splashed with liquid or toxic gas, which is irritating to the skin, it will be safer to wear full-face hood equipment. If it is general toxic gas protection and there is no liquid splashing, a half mask can be used, because the field of vision of the half mask is wider than that of the full mask.

4. Certification of gas masks:

A qualified safety protection product must be certified by an authoritative organization, which is the guarantee of users' real safety. For example, domestic gas masks need to pass China LA certification; In foreign countries, the general gas mask certification bodies include NIOSH, CE certification in Europe, MHLW certification in Japan, KMOL certification in Korea, etc.

5. Detailed design of gas mask:

5. 1. Thickness of headgear/headband: Generally, headgear has a wide bandwidth, so it is more comfortable, because the stress area tied to the head is large, and it will not exert pressure on the head;

5.2. Width of seam: the wider the seam, the better the sealing effect, so the better the gas prevention effect;

5.3. Overall appearance: the surface is smooth and not rough, and it will not cause harm to the skin;

5.4. Breathing port design: The breathing port design is superior to the horizontal design, because the downward design can discharge the hot and humid breath without affecting the line of sight, and the breathing valve piece is not easy to be polluted and easier to clean;

5.5. Manufacturing process: The gas mask molded by one-step molding is firmer and has a longer service life than the mask molded by decomposition;

5.6. Smell of mouth and nose mask: The obvious smell of substances can easily lead to poor breathing and serious skin diseases such as skin diseases.

You can talk about your specific environment, what toxic substances are there, and whether there is dust. I recommend a gas mask for you.