[Emergency] fine particulate matter "PM2, 5" is?
Recent buzz PM2.5 is generally more pollen is a tiny ultrafine particles. Its size is 2. 5 M!
So with until deep into the body, Cause asthma and bronchitis, allergic reactions.
Also flying in the recent air pollutants from the Mainland, and affect people's health is concerned.
Because of very small particles, should be taken in the selection of the mask and how to wear. In the expiration time of the mask should be taken, and allows the invasion of the body wearing a mask how much good material for any gaps.
To prevent the PM2.5?
PM2.5 is 2 in diameter. Is the ultra fine particles of 5 μm or less. As a countermeasure, is 2. In less than 5 μm particle trapping used with mask can be worn or air purifier is effective.
Mask is for business Dust-proof mask DS1, DS2, and N95 The wearing of a mask is recommended.
Each standard mask performance criteria are as follows.
|Types of masks||Particle collection efficiency||(% Or more)|
|CSV||（ national test particles 0. 06-0. 10 Μm ）||80.0%|
|DS2||（ national test particles 0. 06-0. 10 Μm ）||95.0%|
|N95||（ United States standards test particle 0.075 ± 0.02 μm ）||95.0%|
Whereas United States N95, meets the standards of the Japan DS2. Said to meet the more stringent standards, and tested in compared to the N95 particle mask. Size adapted to the Japanese mask, is a good fit.
Only the N95 flu effective?
Actually DS2 standards also enable flu!
Is is said that enabled N95 standard mask advanced mask flu effective
First of all with the N95 standard?
In the United States NIOSH standards 、
Where N is not resistant to oil, tested 95 particles 0.3 μm m （ example viruses etc) more than 95% in the collection can represent.
From that was effective in preventing infections such as SARS, N95 mask be used in health care.
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