As the haze continues to worsen, many people get up daily to get concerned about the daily air quality except for the weather conditions, but did you know that the current PM2.5 standard adopted by WHO is a developing country under the auspices of the World Health Organization The first stage of the development of the preliminary standards, and Europe and the United States and other developed countries there is a certain gap: We show the 'good' air index, on the other developed countries in Europe and the United States may be 'slightly polluting.'
It can be seen from the histogram that within the previous standards (quality level from excellent to moderate pollution), there is a certain difference between our standard value and the United States.
This means that if the primary pollutant is PM2.5, assuming that the Chinese standard has a good air quality index of 50, it actually represents mild pollution under the WHO standards. If we use the high standards of European and American countries If you look at it, sometimes the seemingly clean air is actually still contaminated with health hazards.
Let us look again at the World Health Organization published air quality guidelines and transitional goals (IT):
As stated at the beginning of the article, the PM2.5 standard currently adopted in our country is the primary standard set by the WHO Committee in the first phase of developing countries. Therefore, there is a certain gap between China and the developed countries such as the United States.
△ Chinese standard
△ American standard
Taking Chengdu as an example, among the real-time data of monitoring points in Chengdu on January 31, according to the Chinese standards, the quality standards of 4 monitoring points are 'good', while in the U.S. standards, it has been shown as' mild pollution 'or' Moderately polluted' .
Regardless of national standards, health-conscious citizens should demand more space for themselves with tougher standards, and the air quality on their cellphones may already be 'good', but we should also focus more on specific PM2.5 Value, more reference to other countries in Europe and the United States air quality standards, good protection work.
Of course, want to change the outside air quality is out of our ability, what we can do is to purify indoor 'medium' air, then what is needed is a strong performance, can quickly and efficiently purify the indoor air, most Good also real-time monitoring of air quality to your timely feedback air purifier.
Now on the market of air purification products after another, how to choose a suitable air purifier it? The new national standard 'three high and one low (high CADR / high CCM / high efficiency / low noise)' is based on the other such as The size of the particles that can be filtered, the area that can be cleaned, and other functions also need to be considered.
Here for everyone to enumerate some of the mainstream air purifier commercially available, make a brief product introduction, to see which one is the most suitable for your requirements.
Philips 5000 Series Air Purifier AC5656
CADR value (particulate matter): 600 * m³ / h ☆☆☆☆☆
CADR value (formaldehyde): 300 * m³ / h ☆☆☆☆☆
The smallest particle size can be filtered: 0.003 micron particles ☆ ☆ ☆ ☆ ☆
Virus and Bacteria Filter: Filterable (99.99%) ☆☆☆☆☆
Purifiable area: 42-75m³ / h ☆☆☆☆☆
Filter life: 12 months ☆ ☆ ☆ ☆ ☆
Philips 5000 Series Air Purifier AC5656 in a 20-square-meter room, less than 5 minutes to complete a purification process, the purification speed is very fast. Frontier Vitashield IPS micro-shield purification technology for PM2.5, viruses, bacteria , Pollen, dust and animal dander to filter, the smallest particle size of 3 nanometer cleanable PM2.5 real-time display on the machine, the three kinds of harmful gases and allergens feedback, allowing users to clearly understand the air purifier purification process and Purification effect. Sleep mode only 34 db sound, allowing users to sleep peace of mind.
Brujah Air Purifier 503
CADR value (particulate matter): 600 * m³ / h ☆☆☆☆☆
CADR value (formaldehyde): 280 * m³ / h ☆☆☆
Minimum filter particle size: Not marked
Virus and bacteria filtration: can filter ☆ ☆ ☆ ☆
Purifiable area: 42-72m³ / h ☆☆☆☆☆
Filter life: 6 months ☆ ☆
Can be filtered 3.5 to 6 times per hour, through the multi-energy-saving purification system, effectively ensure the continuous cleaning of the air through the harsh sound pressure level noise test, resulting in noise power of 36 to 67 decibels is running like a low-end Quiet in the library, using environmentally friendly alloy steel as the fuselage, the service life of more than ten years.
Honeywell air purifier KJ410F-PAC000AW
CADR value (particulate matter): 410 * m³ / h ☆☆☆
CADR value (formaldehyde): 60 * m³ / h ☆☆
Minimum filter particle size: Not marked
Virus and bacterial filtration: Not supported
Purifiable area: 40m³ / h ☆☆☆
Filter life: Not marked
Honeywell Air410 (KJ410F-PAC000AW) uses a simple design, white body looks very simple and elegant. Add the side of the wind, can be used as a purifying fan, the summer air purification while air. Professional purification system can filter PM2.5 , Formaldehyde and other common harmful substances.It shows that the operation panel adopts inclined top design to make the operation more convenient.It also supports PM2.5 visual display and the three color indicator shows the air quality visualization.
Although the PM2.5 standard adopted by our country at the present stage is still the primary standard set by the WHO Committee for the first phase of developing countries, the harm caused by haze can not be mitigated to the human body. Without strict standards, Your demand for air can not be reduced.
Air purifiers have gradually become standard in home life, and when choosing an air purifier, each home should choose the most suitable product for its needs. For most people, the small but powerful empty net product Undoubtedly more favored.Functionality, in addition to removing haze and allergens and harmful gases, so in any season can come in handy .At the same time, the visualization of the air condition, easy to keep abreast of the air quality and purification progress. On the long life of the filter, easy to disassemble, user-friendly design is also an indispensable quality home empty net.
