How to choose a good face mask

Dust blocking efficiency of the face mask
The dust blocking efficiency of mask is based on its blocking efficiency against fine dust, especially respiratory dust below 2.5 microns. Because the dust of this particle size can directly enter the alveoli, it has the greatest impact on human health. The dust blocking principle of gauze mask is mechanical filtration, that is, when the dust collides with the gauze, it passes through layers of barriers to block some large particles of dust in the sand cloth. Some fine dust, especially dust less than 2.5 microns, will pass through the mesh of gauze and enter the respiratory system. The dust mask is composed of filter material activated carbon fiber felt pad or non-woven fabric. Those respiratory dust less than 2.5 microns are isolated in the process of passing through this filter material to filter air.

Degree of tightness of the face mask
The anti side leakage design of mask is to prevent air from being inhaled through the gap between mask and human face without filtering. Air is like water flow. It flows where the resistance is small. When the shape of the mask is not close to the face, the dangerous objects in the air will leak from the non close place and enter the human respiratory tract. Well, 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 carry out the tightness test of masks. The purpose is to ensure that workers choose masks of appropriate size and wear masks according to correct steps.

Make sure the mask is Comfortable to wear
In this way, workers will be willing to wear them in the workplace and improve their work efficiency. The maintenance free masks in foreign countries do not need to be cleaned or replaced. They are discarded when the dust barrier is saturated or the mask is damaged, which not only ensures the hygiene of the mask, but also eliminates the time and energy of workers to maintain the mask. Moreover, many masks adopt arch shape, which can not only ensure good tightness with the shape of the face, but also reserve a certain space at the mouth and nose, which is comfortable to wear.