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Masks are the first choice for many consumers to block smog. In order to help consumers understand the protective effect and comfort of mask products, the Shanghai Consumer Protection Commission recently conducted a comparative test on the anti-haze masks sold on the market. The results showed that the safety of 40 samples met the requirements of national standards, but the filtration efficiency of 3 samples with nominal brands of Netease Yan Xuan, Jie Fu Rou and Mingdian Top Grade was relatively low.

According to reports, 40 anti-smog masks were purchased from hypermarkets, e-commerce platforms and other channels in this comparative test, of which 6 were purchased from offline physical stores and 34 were purchased from online e-commerce platforms, covering nominal brands such as 3M and Green Shield. 37 disposable non-woven masks and 3 replaceable cotton masks. Prices range from 0.95 to 19.47 yuan each.

The test referred to the "National Basic Safety Technical Specifications for Textile Products" and GB/T32610-2016 "Technical Specifications for Daily Protective Masks" and other relevant national standards, and tested and compared the quality of anti-haze masks on the market, mainly involving product safety, Breathing resistance and filtration efficiency, etc., and conducted a star evaluation.

The test results show that the tested samples all meet the requirements of national standards in terms of safety, but the air permeability of the samples is quite different, the filtration efficiency of the three samples is low, the price is not necessarily proportional to the quality, and the quality difference between different models of the same brand is obvious.

Filtration efficiency is the core indicator of the performance of anti-haze masks, reflecting the advantages and disadvantages of mask protection. In this comparative test, the particulate salt filtration efficiency and oil filtration efficiency of the samples were tested respectively. The test results show that the highest salt filtration efficiency of 40 samples is 99.6%, the lowest is 85.7%; the highest oil filtration efficiency is 94.6%, the lowest is 73.2%.

Three samples performed well, reaching five stars, such as the Drop Smart Mask (nominal brand: Drop Dew; nominal specification model: RB030VL) distributed by Reckitt (China) Investment Co., Ltd., with salt and oil filtration efficiency of 99.5 percent and 93.7 percent, respectively, performing well.

The performance of the three samples was poor and the filtration efficiency was low. For example, the M950V anti-particulate matter mask (nominal brand: famous top grade) produced by Mingdian Top Grade (Beijing) Information Technology Co., Ltd. (nominal brand: Mingdian Top Grade; Nominal specification model: M950V), the salt and oiliness indexes of its filtration efficiency did not pass the test requirements, 85.7 and 77.3 respectively (standard reference value: salt filtration efficiency ≥ 90%, oily filtration efficiency ≥ 80%). Nominally produced by Hangzhou willing to pay technology co., ltd (now Hangzhou netease strict selection trading co., ltd) 3D nano film mask (nominal brand: netease strict selection; Nominal specifications and models: 3919 average yards), its oily filtration efficiency is low, only 73.2. Shanghai Consumer Protection Commission contacted the enterprise, and the enterprise replied that the implementation standard of this product is T/CTCA1-2015 "PM2.5 Protective Mask" (group standard). According to experts, this standard only requires salt filtration efficiency, but not oil filtration efficiency.

In addition, this comparative test also found that price and quality are not necessarily related. Some high-priced products are not ideal in terms of main performance indicators such as filtering effect and respiratory resistance, while low-priced products perform well. For example, the KN95 protective mask with the nominal brand of "the other side of the realm" has a star rating of four and a half stars and a price of only 1.89 yuan/mask, while the AIR-POPLIGHT anti-haze mask with the nominal brand of "AIRPOP" has a star rating of three stars and a price of 19.47 yuan/mask, with a price difference of nearly 10 times. The quality differences between different models of the same brand are also obvious. For example, two masks with nominal brands of "Black Forest" have a star rating of five stars and the other three and a half stars. The difference is obvious.

● Consumption Tips

Focus on mask implementation standards

The Shanghai Consumer Protection Commission reminds consumers that when purchasing anti-smog masks, they should pay attention to the functional promotion or implementation standards of the products. If the sealing of the anti-haze mask is low, no matter how good the filtration efficiency is, its protective ability will also be affected. For example, even if the plane mask has good filtration efficiency, because of its poor fit with the face, the protective effect may not be as good as the three-dimensional mask. Consumers should clean their hands before wearing a mask to ensure that the mask is close to the face and can completely cover the mouth, nose and chin. When the mask is not worn, it should be dried and the side close to the mouth and nose should be folded inward, and then put into a clean envelope or fresh-keeping bag for storage.