[Q&A Question 114] 2018.04.24

I. Precautions before using a filter-type gas mask: First and foremost, before putting on a filter-type gas mask, the user must understand the gas levels in the working environment, particularly the concentration and properties of any toxic gases; this is a very important prerequisite. Since there is a specified range for the concentration of toxic gases in the air, different types of gas masks are recommended for use within various ranges. Secondly, before use, it is necessary to carefully check whether all the components of the gas mask are intact, whether the air ducts are unobstructed, whether the metal parts are rusted, and whether the rubber is aged or damaged. It is also important to check for any issues with the clips and straps used to secure the filter canister inside the mask bag. Once again, carefully check the airtightness of the joints between various components before use. Finally, depending on the individual user’s circumstances, choose a mask of the appropriate size. II. Precautions for using filter-type gas masks The core component of a filter-type gas mask is the canister, which plays a crucial role in determining the mask’s effectiveness in protecting against gases; therefore, it is recommended that users strictly adhere to the valid usage period specified for the canister. Here, experts from Haigu provide you with some methods to determine when it is time to replace the gas filter canister: The first scenario is when the user can still smell some toxic gases even after wearing a filtering gas mask ； Second scenario: If it is felt that the resistance of the filtration tank is too low, it indicates that the gas protection effect has essentially failed ； Third scenario: If the user shakes the gas filter by hand and hears a rustling sound, it indicates a problem with the assembly, and the gas filter needs to be replaced promptly. Furthermore, when using a gas mask, it is prohibited to open the cover of the filter canister arbitrarily, and care must be taken to prevent liquids from entering the canister. III. Precautions after using filter-type gas masks: After use, filter-type gas masks should be cleaned and disinfected promptly. It is prohibited to use gasoline, organic solvents, etc. for cleaning the masks. Additionally, appropriate systems and regulations should be established to ensure that there is dedicated personnel responsible for their care, with clear responsibilities assigned to individuals.

For complete coverage of the nose and mouth & use in situations with 18% concentration of toxic gases in the air

: ① Conditions for using the mask: The oxygen concentration in the air must be no less than 18%, the temperature should be between -30 and 45 degrees Celsius. Regarding the concentration of toxic gases, refer to Tables 5 and 6 in the \"Technical Requirements for Filter-Type Gas Masks\" (GB 2890—1995). It cannot be used in enclosed containers such as tanks and vats. ② Choosing the right mask: a. Users should select a mask size that fits their face dimensions. Users should select the appropriate detoxification tank (box) based on the type and concentration of the poison. ③ Proper wearing and use: Check the integrity and airtightness of the mask; it should fit snugly against the wearer’s face. During use, pay attention to any signs of leakage and to whether the filter cartridge is functioning properly.

I. Precautions before using a filter-type gas mask: First and foremost, before putting on a filter-type gas mask, the user must understand the gas levels in the working environment, particularly the concentration and properties of any toxic gases; this is a very important prerequisite. Since there is a specified range for the concentration of toxic gases in the air, different types of gas masks are recommended for use within various ranges. Secondly, before use, it is necessary to carefully check whether all the components of the gas mask are intact, whether the air ducts are unobstructed, whether the metal parts are rusted, and whether the rubber is aged or damaged. It is also important to check for any issues with the clips and straps used to secure the filter canister inside the mask bag. Once again, carefully check the airtightness of the joints between various components before use. Finally, depending on the individual user’s circumstances, choose a mask of the appropriate size. II. Precautions for using filter-type gas masks The core component of a filter-type gas mask is the canister, which plays a crucial role in determining the mask’s effectiveness in protecting against gases; therefore, it is recommended that users strictly adhere to the valid usage period specified for the canister. Here, experts from Haigu provide you with some methods to determine when it is time to replace the gas filter canister: The first scenario is when the user can still smell some toxic gases even after wearing a filtering gas mask ； Second scenario: If it is felt that the resistance of the filtration tank is too low, it indicates that the gas protection effect has essentially failed ； Third scenario: If the user shakes the gas filter by hand and hears a rustling sound, it indicates a problem with the assembly, and the gas filter needs to be replaced promptly. Furthermore, when using a gas mask, it is prohibited to open the cover of the filter canister arbitrarily, and care must be taken to prevent liquids from entering the canister. III. Precautions after using filter-type gas masks: After use, filter-type gas masks should be cleaned and disinfected promptly. It is prohibited to use gasoline, organic solvents, etc. for cleaning the masks. Additionally, appropriate systems and regulations should be established to ensure that there is dedicated personnel responsible for their care, with clear responsibilities assigned to individuals. As long as a filtering gas mask is used in accordance with the precautions outlined in the above \"trilogy,\" it can be utilized effectively, turning it into a guardian for your safe work!

Answer: (1) There must be no leaks at the connections of the mask, tubing, and filter. (2) The mask should fit tightly against the back of the ears and the head to prevent air leakage. (3) Applicable only to specified locations. (4) Failure if the weight increases by 50 grams; pay attention to the expiration date.

1. The expiration date of the filtration tank; 2. The sealing of the filtration tank must be removed during use; 3. Its breathing efficiency must be checked before entering the work area

(1) There must be no leaks at the connections of the mask, tubing, and filter. (2) The mask should fit tightly against the back of the ears and the head to prevent air leakage. (3) Applicable only to specified locations. (4) Failure if the weight increase is 50 grams; pay attention to the expiration date

1. Gas masks are products that are toxic and harmful to the environment; those who have not received proper training should not disassemble them or handle their components or repair parts casually. 2. Gas masks must not be used in environments with temperatures above 65°C, nor stored in such high-temperature conditions. 3. The filtering elements of a gas mask lose their effectiveness when exposed to moisture, so it is important to prevent water from getting inside them. 4. Gas masks should be stored in a cool and dry place, away from organic solvents.

First: Ensure that the environment in which it is used is not an oxygen-deficient one, meaning the oxygen concentration should be above 18%. Second: Ensure that the harmful gases present in the usage environment are not at concentrations that pose an immediate threat to life and health