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What are the tips for buying masks?

Update:19 Mar
1. Dust blocking efficiency
The dust blocking efficiency of a mask is based on its blocking efficiency for fine dust, especially for respirable dust below 2.5 microns. Because dust of this particle size can directly enter the alveoli, it has a great impact on human health. Dust-proof masks are composed of activated carbon fiber mats or non-woven fabrics as filter materials. Those respirable dust less than 2.5 microns pass through this filter material.
Second, the degree of tightness
The anti-side leakage design of the mask is a technical requirement to prevent air from being sucked through the gap between the mask and the human face without being filtered. Air is like water flow, where the resistance is small, it flows first. When the shape of the mask is not close to the human face, the dangerous objects in the air will leak in from the leak and enter the human respiratory tract. So, even if you choose a mask with the best filter material. Nor can it protect your health. Many foreign regulations and standards stipulate that workers should regularly conduct mask tightness tests. The purpose is to ensure that workers choose masks of the right size and wear masks in the correct steps.
3. Comfortable to wear
In this way, workers will be willing to insist on wearing them in the workplace and improve their work efficiency. The maintenance-free masks in foreign countries do not need to be cleaned or replaced. When the dust barrier is saturated or the mask is damaged, it will be discarded. This not only ensures the hygiene of the mask, but also saves the workers the time and energy to maintain the mask. Moreover, many masks adopt arched shapes, which can not only ensure a good fit with the face shape, but also retain a certain amount of space in the mouth and nose, which is comfortable to wear.
Disposable Medical Face Mask

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