In addition to formaldehyde, the air purifier is full of flicker!

In addition to formaldehyde, the air purifier is full of flicker!

Yesterday (26th), the results of the first performance evaluation of the first air purifier organized by the National Indoor Interior-Environment and Environmental Product Quality Supervision and Inspection Center were released. The results showed that the function of “removing formaldehyde” of all air purifiers inspected was basically invalid.

In order to make the evaluation results universal, the staff purchased 10 best-selling brand purifiers according to the sales ranking of e-commerce self-operated products. After a month of various tests, the staff found that the air purifier can effectively purify the particulate matter in the indoor air, but it is basically ineffective for purifying the harmful chemical gases in the air.

Not the higher the amount of clean air, the better

△ Purify PM2.5 and formaldehyde gas results

The amount of clean air should be selected according to the size of the room and the cost performance. The clean air volume is more than 100 cubic meters per hour. It is suitable for rooms of 15-20 square meters. It can reduce the PM2.5 in indoor air by 90 hours after starting up. %the above. Therefore, the blind pursuit of clean air is meaningless.

Purifier PM2.5 removal rate is up to standard

From the test results, the high-efficiency filter to purify PM2.5 technology in indoor air is very mature. From the purification technology of the ten air purifiers involved in the test, it is basically high-efficiency filtration technology and the clean air volume of nine sets. Both are above 100 cubic meters per hour, indicating that the air purifier is effective in purifying particulate matter in the indoor air.

The function of removing formaldehyde is basically invalid

Seven of the ten purifiers evaluated this time have the function of purifying formaldehyde. According to the results of the clean air removal of formaldehyde, the seven purifiers have basically no significant effect in removing formaldehyde.

What is the purification performance?
The purifying performance of an air purifier refers to the ability of an air purifier to remove a certain pollutant in indoor air. Specifically, it refers to the amount of clean air of the pollutants that can be removed by the air purifier, that is, the magnitude of the CADR value.

The best effect of a purifier, CADR value of 29m3 / h, according to this data, in a 15 square meter room, boot for 1 hour, in theory, the formaldehyde in the air is also reduced by less than 50%, formaldehyde release indoors In the case of the actual use will be even worse, most of the air purifiers on the market claim that the effect of removing formaldehyde is only a selling point.
In addition, the assessment also found that the purification capacity of the best air purifier is not directly proportional to its price, and the purifier below 1,000 yuan is more cost-effective.

Purifier life is still under test

The purifying life of the air purifier determines the use effect of the purifier and the cost of the consumer, but since the purifying life test is a relatively complicated process, the relevant tests of the National Central Laboratory are still in progress, and the results will be released in time.

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