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How to choose a mask

Update:17-04-2020
Summary:

Dust suppression efficiency The level of the dust block […]

Dust suppression efficiency
The level of the dust blocking efficiency of the mask is based on its blocking efficiency for fine dust, especially for respiratory dust below 2.5 microns. Because the dust of this size can directly enter the alveoli, it has the greatest impact on human health.
Gauze masks, the principle of dust suppression is mechanical filtration, that is, when the dust hits the gauze, it passes through layers of barriers and blocks some large particles of dust in the sand cloth. For some fine dust, especially the dust smaller than 2.5 microns, it will pass through the mesh of the gauze and enter the respiratory system. Dust masks, consisting of filter material activated carbon fiber felt pads or non-woven fabrics, those breathable dusts smaller than 2.5 microns are blocked during the process of passing through this filter material, and play the role of filtering air.
Closeness
The anti-leakage design of the mask is to prevent air from being sucked through the gap between the mask and the human face without filtering through the filter. Air is like water flow, wherever resistance is small. When the shape of the mask is not close to the face, the dangerous objects in the air will leak into the airway from the non-closed place. So, even if you choose a mask with the filter material. Nor can it protect your health. Many foreign regulations and standards stipulate that workers should conduct regular mask adhesion tests. The purpose is to ensure that workers choose a mask of the appropriate size and follow the correct steps to wear the mask.
Comfortable to wear
In this way, workers will be happy to insist on wearing in the workplace and improve their work efficiency. Current maintenance-free masks abroad do not require cleaning or replacement of parts. When the dust barrier is saturated or the mask is damaged, it is discarded. This not only ensures the hygiene of the mask but also saves the time and effort of the workers to maintain the mask. Moreover, many masks adopt an arched shape, which can not only ensure a good adhesion with the shape of the face, but also reserve a certain space at the mouth and nose, which is comfortable to wear.
Uncomfortable people
People with heart or respiratory problems (such as asthma and emphysema), pregnancy, dizziness after wearing, difficulty breathing, and sensitive skin.

 

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