English
Many job sites simultaneously contain two types of pollutants: dust particles and harmful gases emitted during painting and chemical processes. Dust masks can block particles but not gases; Wearing only a gas mask may result in dust leakage. Anti toxic and dustproof two in one, is a combination of filter cotton and filter box assembled on the same half face mask, respectively treating two types of pollutants. Before choosing it, first distinguish what to guard against.
Distinguish between two types of protective objects
Dust prevention relies on filter cotton to intercept particulate matter, and the filtration efficiency for non oily particulate matter shall not be less than 95% for KN95 and 99.97% for KN100 in accordance with the standard GB 2626-2019. Anti poisoning relies on the adsorption of gases by a filter box, classified according to GB 2890: A1 for organic vapors such as benzene, E1 for acidic gases such as sulfur dioxide, as well as ammonia and composite types. The two types of filters have different principles and cannot be replaced by each other.
How to combine two in one
The common combination is a half face mask body with dual side filters. Taking Fangdun as an example: a 1105K half face mask is equipped with 2102N KN100 filter cotton for dust prevention, and a 5000 series filter box is added according to the gas type -5101 (A1) to prevent organic gases or vapors, 5103 (E1) to prevent acidic gases such as sulfur dioxide, and 5107 (A1E1K1) to cover various organic and inorganic gases. The main body is food grade liquid silicone, with a snap on structure that facilitates the replacement of filters.
Three reminders in use
Firstly, confirm the type of gas on site before wearing, select the corresponding filter box, and if unsure, conduct testing or consult with professionals first. Secondly, replace the filter cotton promptly when it becomes contaminated or when there is a significant increase in respiratory resistance. Thirdly, the adsorption capacity of the filter cartridge will decrease with use after opening. It should be replaced according to the product instructions and should not be reused for a long time. After wearing it, perform a breath tightness check to confirm that there is no air leakage at the edges.
Fangdun dustproof half mask 1105K+2102N
The value of integrating anti-virus and dustproof is to equip both types of protection with the same set of equipment. The premise is to choose the right filter, wear it correctly, and replace it on time. It is more practical to first understand what is on site and then decide what to match, rather than simply pursuing a higher level.
