"Fu haze of the blessing, masks are standard." This year, CPPCC member Bai Yansong said in response to a reporter's question. Indeed, now wearing a variety of anti-fog haze masks have become a scene in Beijing streets, and in the indoor environment, air purifier has become the only hope, air purifier, in the end to purify the air to what extent, the domestic one The effect of purifying formaldehyde by air purifiers with 13 different purification principles was compared. The results showed that the effective clearance rate was 9.3% to 91.9% at 1 hour, and the clean air volume was 2.6 m2 to 74.4 m2 / h. This shows that different air purifier purification effect varies greatly. Another study showed that the air purifier can reduce the indoor concentration of about 57% of the fine particles. Air purifier can effectively remove the haze in the particulate matter and other pollutants and air purifier efficiency and housing area and so on. Therefore, the air purifier is still useful, but many manufacturers have reached the purification rate of 99% or more, is not easy.
With the increase in haze, air purifier market unprecedented hot, a group of data show that the national air purifier manufacturers from 151 in 2013, rose to 689 in 2015. The major brands dazzled consumers, after the lack of a sound industry standards and market mechanisms, the market has been in good and bad air purifier situation, March 1 this year, the National Standard Committee approved the release of the newly revised "air purifier "National Standard" formally implemented, clearly defined in the future will be marked on the purification of the following three parts: the product of common indicators such as voltage, frequency, power, etc .; product parameters such as clean air volume (CADR), cumulative purification (CCM) Noise, energy efficiency standards; use matters such as the use of site conditions, common fault description. The four core indicators, CADR (clean air), CCM (cumulative purification), energy efficiency standards, noise will be used as the basis for consumer selection criteria, the previous "purification rate", "pollutant removal rate" and other relative index data got canceled.
Department of Public Health, Peking University School of Public Health and Environmental Health Department of Guo Xinbiao said that the implementation of the new national standard will play a regulatory role in the air purifier market to help clear the air purifier market, cohabitation situation, so that people have chapter can be Follow, there are cases to follow. According to him, the newly revised air purifier "national standard" clear air purifier core parameters are "clean air volume" (CADR value) and "cumulative purification" (CCM value), that is, air purifier products Of the "purification capacity" and "purification capacity of continuity", the greater the amount of clean air, indicating its ability to clean the stronger, the greater the purification power, indicating that the greater its endurance.
Consumers in the selection of air purifiers need to pay attention to what the experts said, first of all to be clear must choose to meet the national standard air purifier, to abandon the "optional air purifier, expensive is good" idea, if not In highly polluted environments, products can be selected that reduce contaminants below environmental limits without the need for high removal rates and expensive products. For example, select the filter for the indoor PM2.5 purifier, should choose with HEPA filter (high efficiency particulate air filter) of the multi-functional composite products. In addition, the price can be combined with the level of supplies, select the cost-effective air purifier products. To pay attention to whether the purifier will produce harmful by-products, some air purifiers using a single UV, electrostatic and plasma discharge, ozone purification, etc., may react with organic compounds in the air, resulting in small molecules of harmful substances. There is to remember to follow the instructions on a regular basis to maintain and replace the filter and adsorption materials. In addition to the application area is also a need to focus on the parameters, consumers can according to their living environment to make a rational purchase judgment.