Air purifier “remove formaldehyde 99%”? Don’t believe it, it’s all flickering!

“Removal of formaldehyde 99%” “Efficient addition of PM2.5”… In the past two years, due to the influence of smog, air purifiers have been increasingly popular, and the effect of products with 5,000 or even 10,000 yuan is really publicized. Is it amazing?

Recently, the relevant performance evaluation results of China’s air purifiers released by relevant departments show that the PM2.5 technology in the air purifier purifying air is relatively mature, and the function of scavenging formaldehyde is basically “flickering”, with no significant effect, and the price is high and exaggerated. And so on.

Remove formaldehyde by 99%? Just selling

The reporter saw at the air purifier counter of the front store of an electrical appliance store in Beijing that there were twenty or thirty air purifiers on the shelves, and the price ranged from less than 1,000 yuan to nearly 10,000 yuan. Many manufacturers’ large posters are printed with “99% formaldehyde removal”, “complete decomposition without residue”, “smart removal of formaldehyde”, etc., and various “advanced technologies” with letters and English are attached below.

The reporter asked about the need to purify the air after the house was renovated. The salesperson immediately promoted an imported brand air purifier with a price of 5,499 yuan. In the promotional materials, this model AC4076 products filter formaldehyde rate as high as 99.1%.

The reporter asked the clerk “when the effect can be achieved so well, how the value is drawn”, the clerk said that “this is imported, all the data detected by the authoritative laboratory, authentic and reliable, just use it.”

So, the actual use of formaldehyde in addition to the effect is really so ideal? Song Guangsheng, director of the National Indoor Interior-Environment and Environmental Product Quality Supervision and Inspection Center (hereinafter referred to as “Indoor Environmental Inspection Center”) gave a rather pessimistic answer: “Most air purifiers claim that formaldehyde has almost no effect.”

It is understood that the indoor environmental inspection center selected ten purifiers on July 23 and conducted a one-month test. According to the test report, seven out of ten purifiers have the function of purifying formaldehyde. According to the results of the measured cleanroom air (CADR), these seven purifiers have no significant effect, including the similar products of AC4076. AC4074. The best-performing one purifier is turned on for 1 hour in a 15 square meter room. In theory, the formaldehyde in the air is also reduced by less than 50%, and the CADR value is only 29m3/h.

“Generally, the CADR for removing pollutants is worth more than 60m3/h. The effect is even worse when formaldehyde is released indoors. Most air purifiers claim that the effect of removing formaldehyde is only a selling point.” Song Guangsheng said.

The best value for a thousand yuan purifier

It is understood that the national standards for air purifiers stipulate that their performance indicators are expressed in terms of “clean air volume” (CADR) in m3/h. The air purifier has a corresponding CADR value for each air pollutant that can be removed. The CADR value can directly and scientifically reflect the true purification ability of the air purifier. The larger the value, the stronger the ability.

Because the effect of the air purifier is difficult to visually verify, there are few products with more professional CADR values, which leads many people to choose the air purifier. Liu Lin, a citizen, said: “I can’t tell the effect of a machine. In this case, for the sake of peace of mind, I can only buy a relatively high price.” The reporter found that Liu Lin’s idea is quite representative.

Air purifier, is it really the higher the price, the better?

The test results of the “Indoor Environmental Inspection Center” gave the answer: the purification performance and the price level have nothing to do with it. The reporter saw in the statistical results of the test results that the price of a foreign brand product with the highest price was 4047 yuan, the CADR value of PM2.5 ranked fourth, but the price/performance ranking ranked the last; the lowest selling price was a 499 yuan air. Purifier, the CADR value of PM2.5 in the test is 110m3/h, and the price/performance ratio is ranked second.

From the test results, the high-efficiency filter to purify PM2.5 technology in indoor air is very mature. The ten air purifiers involved in the test are basically high-efficiency filtration technology, and the CADR of nine sets are above 100m3/h. Air purifiers are effective in purifying particulate matter in indoor air.

According to industry insiders, the cost of purifiers is not high, but the price is not uncommon in the seven or eight thousand yuan. The phenomenon of high prices is more serious. “To be reasonable according to the size of your room, this inspection effect, the purifier cost of about 1,000 yuan is the best.” Song Guangsheng said.

No authoritative testing agency

In the first half of this year, sales of air purifiers nearly doubled and the market prospered. Behind the prosperity, the chaos in the air purifier market cannot be ignored, and it is suspected of false propaganda and blind expansion. The reporter saw a third-party test report on some air purifier brand brochures, and most of the products only had their own propaganda.

In the above AC4076 product brochure, the “99.1%” result is to inject formaldehyde into the “1m3 closed box, start the action for 3 hours, and determine the concentration change of the components.” The data were tested according to a third-party testing agency and the Guangdong Provincial Microbial Analysis Center.

The reporter contacted the Guangdong Provincial Microbial Analysis Center to inquire about the air purifier testing. The staff sent a “trust check registration form” and an “air purifier quotation” to the reporter. The quotation shows the CADR value (particulate matter), CADR value (formaldehyde), formaldehyde, benzene, and other testing items. The price ranges from 500 yuan/time to 2500 yuan/time. “You are free to choose the project you are willing to test.”

Experts said that air purifiers do not have an authoritative testing mechanism. It is inevitable for enterprises to detect certain data according to their own choices and even exaggerate the purification effect. In addition, the third-party testing units are mixed, which is easy to do with commercial interests, and it is difficult to ensure the accuracy and fairness of the test results.

Experts remind that the basic requirements for the purchase of air purifiers are non-toxic, safe, and the CADR value is valid and reasonable. It is necessary to purchase products according to indoor pollutants and rooms and pay attention to the timely replacement of filter materials during use.

Contact us for more products and discounted prices
Helen:
+86 13922346046
info@olansiglobal.com
https://www.olansiglobal.com

The first meeting of the revision of the national standard for air purifiers was held in Guangzhou

From July 15th to July 16th, 2019, the National Household Appliances Standardization Technical Committee Cleaning Appliance Subcommittee held the first meeting in Guangzhou, on the revision of GB/T 18801-2015 “Air Purifier” national standard. The standard revision plan number is 20190972-T-607, the release date is March 28, 2019, and the work cycle is expected to be 24 months. More than 50 technical experts from mainstream enterprises in the air net industry participated in the meeting.

Ma Dejun, vice president of China Household Electrical Appliances Research Institute, delivered an important speech on the current background of air purifier industry, global environmental pollution, and the development of IEC standards for air purifiers. He said that current air purifiers are not limited to removing particulate matter and future product development. It is necessary to combine pollen allergens, ozone, odor, and other issues; not limited to the domestic market, India and other developing international markets are also in great demand. He said that the development of products should keep pace with the times, and the standards should fully consider the status quo of the industry and consumers. I hope that the revision of standards can fully consider the market and social needs under the new situation.

Participants and experts fully expressed their opinions on the revision of the standard and discussed the draft standard. The meeting reached a basic consensus on the standard revision content and the overall framework. The standard revision direction is as follows: the gaseous pollutant test method is changed to the continuous dynamic balance method; the CCM is no longer graded separately, and the file is directly divided according to the CADR; the technical requirements of the silent mode are added; the test cabins of 10m3 and 81m3 are added; and the performance evaluation method of the automatic mode is added; Increase the filter odor evaluation method, etc. At the same time, as China is taking the lead in formulating the international standard IEC 63086 for air purifiers, the revision of GB/T 18801 also refers to the relevant technical directions of international standards.

The National Household Appliance Standardization Technical Committee has arranged the follow-up related work, requiring all units to combine the industry and consumer status, strengthen the research in the technical field on the basis of the standard overall framework, and further improve the core content of the standard.

Contact us for more products and discounted prices
Helen:
+86 13922346046
info@olansiglobal.com
https://www.olansiglobal.com

You know where formaldehyde is hidden in the new house. You can buy an air purifier.

Olansi is a professional manufacturer of air purifiers, producing anion air purifiers, activated carbon air purifiers, HEPA air purifiers, antimicrobial air purifiers, etc.

It is well known that formaldehyde is very harmful to the human body, but it is usually caused by olfactory disturbance, irritation (irritation, tears), pulmonary dysfunction, excessive formaldehyde inhalation caused by prolonged exposure, and various chronic respiratory diseases. Nasopharyngeal, colon and infant chromosomal abnormalities can also lead to memory and mental deterioration in adolescents and leukemia.

As far as formaldehyde is concerned, many people think it has something to do with the decoration and building materials for new houses. Because of this, such as “carcinogenicity of formaldehyde”, the relationship between formaldehyde and decoration is unilaterally misunderstood and understood.

Hepa filter

In terms of decoration and formaldehyde, everyone’s reaction is usually synthetic wood and building materials. When we see “zero formaldehyde” in the choice of decoration, it is easy. You can use “zero formaldehyde” boards and furniture to inhibit formaldehyde at least to some extent, but this is harmful.

In fact, formaldehyde is not something to be used for decoration, it is only hidden in the paint and adhesives used in the construction process. Although it is used for decoration, a urea-formaldehyde resin containing formaldehyde is the necessary adhesive for decoration.

In other words, as long as adhesives are used, even if all purchased materials are “zero formaldehyde”, they are also exposed to the “main body” of formaldehyde. The amount of formaldehyde remaining in the process of making urea-formaldehyde resin is called free formaldehyde. This part of free formaldehyde is released when the coating flattens and solidifies, which is the direct harm of formaldehyde decoration.

There are too many places to use adhesives in decoration, such as putty, paint, adhesives, wallpaper, hardened wood flooring, particleboard, MDF, and even solid wood. I don’t need formaldehyde in the process of home decoration.

All we can do is to minimize the formaldehyde content of each product because it is inevitable! For example, try not to use wood flooring, composite materials or as few layers as possible! The formaldehyde content is as low as possible… as long as the formaldehyde content is within a certain range, it will not be so bad!

As mentioned above, formaldehyde is acceptable in a certain range of indicators, but it promotes the volatilization of formaldehyde, i.e. high temperature when it occurs in our daily life.

According to the investigation, the volatilization point of formaldehyde is 19 C, and the temperature rises by 0.4 liters every time, especially in spring and summer, the temperature rises faster and the concentration is more than three times as high as usual.

Originally, in winter, the temperature dropped and the formaldehyde emission decreased, but due to the need to heat the house, such as the north’s ground temperature and the south’s air conditioning, the formaldehyde in the room was hidden by paint, floors, and furniture. There will be a lot of releases.

In fact, formaldehyde can not be completely eliminated. The methods of removing formaldehyde on the network can be divided into several types. The public and the public husband say that women are reasonable, and then let’s see what their truth is…Contact us for more products and discounted prices
Helen:
+86 13922346046
info@olansiglobal.com
https://www.olansiglobal.com