Simple publicity, high efficiency, unscientific
Reporters in Beijing, Shanghai and other places in the home appliance market survey found that in some large home appliance stores, air purifiers are placed in the obvious position of the entrance, the price generally ranges from 1,000 to nearly 10,000 yuan, the mainstream brands are Philips, Yadu , Panasonic, etc. A salesperson at a Beijing appliance store told reporters that in recent months, sales of air purifier products have been rising, reaching more than 300,000 units a month. One of the best-selling products is the purification of PM2.5 and formaldehyde. Many of these products have been out of stock.
Some sales people said that the efficiency of the air purifier to remove PM2.5 and formaldehyde is as high as 99%, and the removal effect is achieved in a short time, "milliseconds remove formaldehyde." A salesperson also told reporters that the purifying efficiency of the purifiers they sold was experimentally tested and all had test reports. Experts pointed out that the judgment of the purification ability of the air purifier requires comprehensive purification of the size of the space, the length of purification time, the initial concentration of harmful substances and other indicators. It is unscientific to simply publicize high efficiency.
Formaldehyde removal rate is far below the nominal
Can a hot air purifier achieve the purification efficiency claimed by the merchant? CCTV reporters randomly selected five kinds of air purifiers with high sales volume and market share in the market, and sent them to the Shanghai Environmental Protection Product Quality Supervision and Inspection Station for testing.
According to the test results, the PM2.5 removal rate of the two purifiers was less than 90% at the time specified by the standard, which was 87% of the Lake purifier and 89% of the Yadu purifier. Among the five brands of Lake, Yadu, Sharp, Philips and Delong, the highest formaldehyde removal rate is only 78%, and the lowest is only 16%.
Experts remind consumers that when purchasing air purifiers, they should also pay attention to a key indicator of purifier products - the amount of clean air. The larger the value, the higher the purification efficiency of the purifier. The inspectors also tested the clean air volume indicators of the five air purifiers. The test results show that the clean air volume of the five air purifiers is relatively large, with the highest reaching 434 cubic meters / h, and the smallest is only 174 cubic meters / h.
There is currently no mandatory national standard
After examining the outer packaging of the purifier product, the reporter noticed that the standards implemented by these purifier products are different. At present, there are no mandatory national standards for air purifier products, so some products implement recommended national standards, while others implement their own corporate standards. The air purifier market has such problems as over-promotion and confusion, mainly because its products do not have uniform mandatory national standards, so the so-called purification performance of different purifier products is basically not comparable, for example, it is also claimed to be formaldehyde purification effect. It can reach 98%. Some purifiers can be reached in an hour or two, while some purifiers take more than ten hours.
Experts pointed out that due to the lack of uniform mandatory standards, it is difficult for law enforcement agencies to judge the quality of purifier products. Although it can be proved that some purifier products do not achieve the claimed purification effect according to the national recommended standards, it is difficult to determine these purifier products because the national standards for the main indicators of purification effects of purifiers are not uniform or mandatory. Not qualified. (According to the "Weekly Quality Report")
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