Shanghai Mask Quality Risk Test Results Showed That 60% Masks Failed.

< p > < strong > 24 batch sampling > a href= "http://www.91se91.com/news/index_c.asp" > masks < /a > unqualified < /strong > /p >

"P" Shanghai Quality Supervision Bureau has carried out the quality safety risk testing of the masks, which are called "PM2.5 protection", "isolated dust" and "anti haze", and collected 38 batches of samples to cover the main brands of production and sale in the city.

According to the national standards such as respirator, self-priming filter respirator (GB2626-2006), hygienic standard for disposable sanitary products (GB15979-2002) and basic safety technical specification for National Textiles (GB18401-2010), the inspectors conducted risk tests on the identification, filtration efficiency, microbiological indicators, < a href= "http://www.91se91.com/news/index_c.asp" > textile > /a > safety requirements.

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< p > respirator filtration efficiency refers to the percentage of respirators to filter particulates in the air under the prescribed conditions. The filtration efficiency reflects the effect of respirator particles.

According to the national standard, the respirator should filter at least 90% of the pollutants.

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< p > in the test of Shanghai, 24 batches of respirators < a href= "http://www.91se91.com/news/index_c.asp" > filtration efficiency < /a > measured value is below the 90% minimum requirement stipulated by the standard; a batch of respirators is lower than 95% requirements; 21 batches are not marked with filter grade; 6 batches are not marked with the implementation standards of products.

Among the products with low filtration efficiency, the filtration efficiency of many respirators is surprisingly low. For example, the test results of a common dust-proof respirator are shown to be "0".

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< p > < strong > partial masks may cause skin diseases < /strong > < /p >.

< p > reporter has learned that the masks made of cotton cloth should consider the safety technical requirements of textile products. Formaldehyde is a kind of dyeing and printing auxiliaries. In the use of products, formaldehyde will be released gradually. If exceeded, it can cause respiratory inflammation and skin inflammation through human respiratory tract and skin contact, which will cause harm to human health.

The human skin is generally weak acid, so as to resist the invasion of external pathogens. If the acid and alkali content of the mask is over standard, it will destroy the weak acidic environment of the human skin and make the skin vulnerable to germs.

Decomposable carcinogenic aromatic amine dyes are dyes that can be synthesized from carcinogenic aromatic amines, commonly known as banned azo dyes, which may exist in colored textiles and are easily absorbed by human body.

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< p > some experts say that the above masks will not only protect against haze but also accidentally catch skin diseases.

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< p > according to the report, the microbial colonies, coliform bacteria, pathogenic bacteria and total number of fungal colonies of the 38 batches of masks were not exceeded.

However, in the 13 batches of cotton fabric, gauze and other textile fabric masks, the pH measured values of the 6 batches of fabrics or linings exceeded the standard values, and the formaldehyde content and the decomposable carcinogenic aromatic amine dye index were not exceeded.

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< p > < strong > choose masks should pay attention to product information < /strong > /p >

< p > at present, the relevant risk detection results have been informed of production enterprises, distribution enterprises and the local quality and technology supervision departments, urging enterprises to standardize production, strengthen product quality control, improve technology, and reduce or eliminate the risk of product quality and safety.

At the same time, Shanghai Quality Supervision Bureau has organized a mask quality analysis meeting, invited technical experts to analyze the situation of product risk monitoring, improve the production process, establish and improve the quality management system, and assume the main responsibility of product quality.

At the same time, we will report the quality and safety risk information of mask products to relevant departments, and suggest that relevant national standards should be issued as soon as possible.

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< p > Shanghai Quality Supervision Bureau recommends that consumers choose the types of masks according to their own needs.

When selecting and using respirators, we should pay attention to the good packaging of masks, product qualification certificates, performance specifications, usage methods and matters needing attention.

When choosing masks, it is suggested that consumers should try them on. The wearing process should conform to the express requirements of the product.

At the same time, it is recommended that masks should not be worn too long. If there is any discomfort, they should keep away from the source of pollution and remove the mask.

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