What is haze?
The composition of the haze is very complex, containing fine particles of various harmful and toxic substances, can be directly through the respiratory system into the bronchial lung, even, affect the human respiratory system, easily lead to bronchitis, exacerbation of asthma and other respiratory diseases; induced cerebral vascular disease, nasal inflammation and other diseases.
Haze is mainly composed of sulfur dioxide, nitrogen oxides and respirable particulate matter of these three. In which the respirable particulate matter is what we often say PM., and we often say PM2.5, is the diameter of the air is less than or equal to 2.5 microns of particles of pollutants.
The most common is the 3 layer of disposable medical non-woven mask, because many people think that the mask used repeatedly, easy accumulation of bacteria and germs, so choose the disposable safety. And it is lightweight, easy to carry, the permeability is relatively good, can filter the air particles, the barrier droplets, secretions and dehumidifying functions. But it blocked dust particles ineffective, also cannot resist PM2.5.
Warm mask is generally made of cotton, which can filter the air particles, certain barrier droplets, secretions, strong adsorption capacity, can be reused after cleaning, but poor sealing cotton masks, air can enter the body through the void respiratory mask with the face, the permeability of coal dust in general, and PM2.5 are not the protective effect is very good. And the mask surface contact part will have mouth saliva, if there is no good cleaning, easy to breed bacteria.
>>>>Active carbon mask
Activated carbon mask is added with activated carbon adsorption, can effectively adsorption of benzene, formaldehyde and other harmful gases, peculiar smell and deodorization effect, also has certain resistance dust filter, bacteria and anti-virus effect, wear comfortable, reusable. But against particles and haze the protective effect is limited, and not enough air, carrying is not convenient.
>>>>N95 dust mask
N95 NIOSH is anti-dust masks (national occupation safety and Health Research Institute) one of 9 standards set. "N" means "no oil"; "95" refers to the detection conditions of NIOSH standard, the filtration efficiency reached 95%. the professional protective masks in addition to prevent infection and also spray, protection the barrier to PM2.5 particles have a good effect. But N95 masks airtight, airtight, easy to wear breathing difficulties is not correct, hypoxia dizziness.
Matters needing attention：
1. Mask must be cleaned and replaced regularly.
2. Choose the right mask according to the air quality.
3. People with respiratory diseases, old people, children, pregnant women and other special populations should not wear masks for a long time.
4.N95 mask is airtight, but it is difficult to breathe, cardiovascular disease and other patients should be cautious to wear.
The above content is provided by PM2.5 anti fog and anti bacteria stereo mask.