Wearing a mask has exquisite haze days 
 
 
N95 mask, fashion wear masks carefully 
 
 
The correspondent Xu Youjia 

 
China's traditional Chinese medicine to 

        Around the fog haze weather strikes, masks are sold out of stock. Especially the sort of similar gas mask N95 respirator, it is good to sell. 
 
        , hangzhou city, zhejiang province hospital of doctor of vice director of respiratory FuQian said that medical masks are divided into three categories, one is surgical masks, about 4 microns in diameter particles can be stopped. 2 it is activated carbon surgical masks, main effect is every taste, do not prevent bacteria and viruses. Third, dust mask, main function is to dust, bacteria resistant. N95 respirator is a kind of dust mask, filtering effect can reach at least 95%. 
 
        The structure of the three types of mask has three layers, the outer layer is the splash, filtering, is among the most inner layer is moistureproof. These surgical masks to prevent respiratory disease is effective, and the cotton masks are only available in the market have dustproof effect. 
 
        But not everyone can be wore N95. Surgical masks are thin, doctors and nurses wear masks in the operation room is to prevent the pollution of droplets on the patients, and in the outdoor, surgical masks of dustproof effect seems to some weak. 
 
        In fact, the doctor does not recommend people wore N95 mask. FuQian said, in theory, a mask of protective material is closed, stop the effect of the particles, the better. But on the other hand, a mask is airtight, breathing resistance increases, the more obvious, breathing more difficult. And the air to breathe every day is a certain amount of, or a lack of oxygen. Wearing N95 such professional protective masks are trained, otherwise easy to cause difficulty in breathing, dizziness caused by the oxygen. For the special groups, such as children, the elderly, people with respiratory diseases and cardiovascular disease, must be careful to wear, wear time also shoulds not be too long. In addition, because of the mask to cause skin allergies, also should stop wearing. 
 
        Now face masks have become popular goods, some of the color is gorgeous, design novel fashion mask is favored by teenagers. But experts warn that fashionable masks seen many of them are useless. 
 
        TaoChengJun, director of the hospital dermatological department warned that countries to mask thickness, layer number and permeability has strict rules and safety indicators, such as fashion masks often in pursuit of good, permeability is bad, not only can not effectively prevent flu, which also may contain easily lead to allergy, is also likely to cause cough. 
 
        He reminded to buy masks, should try to go to the pharmacy to buy surgical masks, and select normal manufacturer production colorless, tasteless, good air permeability of cotton products, just buy the mask, you should wash and wear, the wear, also want to pay attention to the cleaning and hygiene masks, keep dry, use two consecutive days should be cleaned and should be used when washing scalding water for 5 minutes, then scrub with soap and clean water after hanging in the hot sun exposure.
 
 
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