With the public's attention to air quality, the annual sales of air purifiers have increased year by year, and in the past two years, it has been around 6 million units. Recently, an FFU air purifier was sold on the e-commerce platform. The Shanghai Municipal Bureau of Quality Supervision recently commissioned the Shanghai Environmental Protection Industry Association to investigate the quality and safety of this product. The test results were surprising.

Known as "industrial grade" as a selling point

FFU is called Fan Filter Unit. The full name of FFU is the fan filter unit, which is widely used in industrial fields such as clean production lines.

Search for the keyword "FFU" in e-commerce platforms such as Tmall and JD. There are nearly a thousand related products, most of which are priced between 1,500 yuan and 2,500 yuan. Many of them also have "industrial grade" labels as product selling points.

Although there are many types of FFU purifiers, the appearance of the products is very similar, they are all metal casings and cabinet designs, and almost all of these air purifiers claim that the purification ability of their own products is much stronger than that of ordinary household purifiers.

The reporter saw on the product page that the merchants focused on promoting the product with a clean air volume (CADR value) of more than 1000m?/h, and the clean air volume (CADR value) of the gaseous pollutants, which is what we usually call PM2.5. And formaldehyde purification ability.

On the Tmall platform, a web page labeled "Persian FFU Air Purifier" shows that its monthly sales exceeded 1,100 units; and the "Duolang FFU Air Purifier" sold on the Jingdong platform showed more than 3,000 items. Comments, the rate of praise is as high as 97%.

9 products have almost no formaldehyde purification ability

The risk survey selected Tesco and Jingdong two e-commerce platforms with large sales volume of FFU air purifiers for sampling, and a total of 13 batches of products were selected for testing. Only 4 of them are nominally implemented in the relevant national standards, and the remaining 9 products are not subject to the standard of implementation, which is non-standard production. The test found that there were 11 products with an actual PM2.5 purification capacity that was less than 60% of the nominal value.

In addition, all 13 batches of FFU products claim to have formaldehyde purification function on the webpage, and the inspectors test according to national standards. The highest measured value of 13 batches of FFU purifiers is only 30% of the nominal value, 9 products. The measured value of formaldehyde purification capacity is even lower than the lower limit of the detection range. Experts say that these FFU purifiers have almost no formaldehyde purification capabilities.

The safety indicator pass rate is actually 0.

The ability to clean the air is an important performance indicator for air purifiers, and the safety performance indicators are the most basic requirements for household appliances. From 2014 to 2016, the Shanghai Municipal Quality Supervision Bureau conducted three consecutive inspections of household air purifiers. The safety rate of all air purifiers is 100%, but the test results of 13 FFU purifiers collected for the risk investigation show that the safety indicators are not qualified, and the pass rate is 0!

The risk investigation was carried out in accordance with the provisions of the mandatory national standards, and the three items of the FFU purifier "mechanical hazard", "protection against contact with live parts", and "stability" were tested.

National standards stipulate that moving parts in electrical equipment should be adequately protected against damage caused by exposure to these dangerous parts.

Yu Zhiqiang, Engineer, Material Center, Shanghai Metrology Institute

This finger, which simulates the fingers of the consumer, can be directly touched by the motor that touches it. Our hands will be hurt, or the clothes may be twisted.

The testers randomly selected a qualified household air purifier for comparative demonstration. The reporter noticed that the internal motor fan of the qualified purifier is designed with compartment protection, and the finger can not directly touch the dangerous parts such as the motor fan from any angle. . The 13 FFU air purifiers for this risk survey have a 100% failure rate for mechanical hazards.

Mandatory national standards also stipulate that household appliances must have certain protective measures, and strong electrical circuits should not be exposed to prevent the user from touching the live parts, posing a risk of electric shock.

Yu Zhiqiang, Engineer, Material Center, Shanghai Metrology Institute

This is a direct exposed bare electric component. The multimeter now shows 224.9 volts. It is also very dangerous for ordinary people to encounter them. It may be crippled and may be electrocuted.

The 13 batches of FFU purifiers did not take effective protective measures for live parts, and the strong electric lines and live parts were directly exposed to the reachable range. Ding Yumin, senior engineer of the Materials Center of Shanghai Metrology Institute, said that the structure of the FFU purifier is not simply simple, but simple.

The results of the risk investigation have been reported to the quality supervision department.

According to the statistics provided by the industry association, the reporter found that the monthly sales of the three FFU air purifiers from the Tmall platform were nearly 2,000. The results of the risk investigation results for the FFU air purifier have been reported to the Shanghai Quality Supervision Bureau, and the test results will be released publicly.

39 air purifiers official evaluation of the most advanced vacancies

The Shanghai Municipal Quality Supervision Bureau is the earliest department in China to conduct quality supervision and spot checks on air purifiers. Since 2003, a total of 13 supervision and spot checks have been carried out.

In the quality assessment of an air purifier commissioned by the Shanghai Municipal Environmental Protection Industry Association, a total of 39 air purifier samples were sampled, of which 17 were sampled in large department stores and 3 were sampled on e-commerce platforms. 19 samples were sampled in production companies, and the market price of products ranged from 900 yuan to 9,200 yuan per unit. According to the current national standards, the important indicators of the air purifier are separately tested, and each air purifier is scored in the form of a star rating through data analysis.

Shen Hao, Senior Engineer, Material Center, Shanghai Metrology Institute

The first level is a star that meets the national basic standards, including mandatory standards and product standards. The three stars are the basic standards that can fully surpass the country and can reach the domestic advanced level. The five stars are comprehensively surpassing the international advanced level and demanding.

According to the comprehensive quality evaluation results, none of the 39 air purifiers can achieve a score of up to 5 stars; 6 products have reached 4 stars; 7 products have 3 stars; 6 products have 2 stars; 18 The product rating is 1 star, accounting for 46% of the total; 0 star rated products have 2 batches, the specific evaluation results will be released on the official website of the Shanghai Quality Supervision Bureau. (transferred from CCTV)