Dust is the enemy of human health. The finer the dust, the longer it stays in the air, and the easier it is to be inhaled by the human body, especially the respirable dust smaller than 5 microns will directly enter the alveoli and deposit, leading to silicosis or other pneumoconiosis, ranging from labor loss to severe then die.
With the emergence of various air pollution problems, dust masks have become a necessity in people's life. How much do you know about the frequently used dust masks? Watch out, your dust mask won't work after making these mistakes!
Can gauze prevent dust? As early as 2000, the former State Economic and Trade Commission clearly stipulated that gauze masks should not be used as dust masks, because gauze masks have only about 10% dust-blocking efficiency for dust less than five microns, and are the most harmful to the human body. As a result, it costs money and fails to prevent dust hazards.
Wearing a dust mask will prevent you from getting pneumoconiosis? Some workers seemed relieved after wearing dust masks! However, just having a dust mask is not enough. Dust masks have a certain filtering capacity, beyond which, dust cannot be prevented. Therefore, in some places with high dust concentration, it is necessary to carry out engineering transformation to control the dust and reduce the dust concentration to below the allowable concentration, and then consider wearing a dust mask. Dust masks cannot prevent dust if they are not worn properly. Wear it in strict accordance with the instruction manual to ensure that the wearing position is correct (no leakage) every time.
Can I wear two masks? wrong! Get twice the result with half the effort! Especially wearing a gauze mask or medical mask inside a special dust mask will reduce the protective effect of the dust mask.
There are currently many types of dust masks on the market, and the quality varies. The method of cleaning dust reminds workers that there are national standards for the manufacture of dust masks, and each dust mask must meet this standard to be qualified. Among them, in GB2626-2006, the filter element protection level of dust masks can be divided into three types: KN90, KN95, and KN100. At present, the best dustproof effect is the KN100 dustproof mask, the dustproof effect can reach 99.97%, which can effectively prevent dust hazards and prevent pneumoconiosis. The national standard also stipulates that the total exhalation resistance of the mask shall not be greater than 350Pa, and the total exhalation resistance shall not be greater than 250Pa. When purchasing a dust mask, the design of double filter cotton will greatly reduce the breathing resistance, so that the work will not be oppressed and the work efficiency will be improved. The main part of the mask should be made of silicone material, which is similar to the elasticity of the skin, making it softer and more comfortable to wear. In order to consider the cost of the mask, the use cost should be determined according to the use time of the dust mask. Because the cost of dust masks that meet the above conditions is relatively high, choosing a mask with a longer service life will effectively reduce costs. Only by choosing dust masks scientifically and paying attention to safety protection can we ensure our health.