"The newly unsealed mask contains the first-level carcinogen ethylene oxide . After opening the packaging, you have to shake the mask and then use it, which can significantly reduce the ethylene oxide value." In a hot video recently, a man in a white coat "popularizes science" seriously.
Disposable medical masks for sterilizing . The pictures in this article are all Pengpai News reporter Lu Mei Photo
On December 1, the Hangzhou Market Supervision Bureau and the Zhejiang Provincial Center for Disease Control and Prevention both answered: ethylene oxide is a substance used for disinfection of sterile medical masks. Medical masks from regular manufacturers can only be sold after passing the test. There is no need to worry that the residual content of ethylene oxide exceeds the standard, open the packaging and wear it directly.
"Most masks produced by regular manufacturers are disinfected with ethylene oxide. In the mask product standards, the residual limit value of ethylene oxide is 10ug/g - the national standard stipulates the residual amount after safety evaluation, and there is no problem meeting the requirements of the national standard." Xiao Hailong, director of the Medical Device Inspection Institute of Hangzhou Food and Drug Inspection Institute, told The Paper (www.thepaper.cn).
Zhou Jie, director of the Medical Device Supervision Department of Hangzhou Market Supervision Bureau, reminds that when buying masks, you should choose a regular manufacturer with information such as mask type, production license number, product registration certificate number, production date, production batch number, manufacturer and address on the packaging.
Experts from the Zhejiang Provincial Center for Disease Control and Prevention said that civilian masks are not routinely disinfected with ethylene oxide. Most companies that produce sterile medical masks choose ethylene oxide (EO) sterilization equipment. They must adopt a proven and qualified analytical process according to requirements. Only after the residue testing is qualified can they be sold, and they can be registered and registered according to medical device management.
Experts remind that the correct way to wear a mask is: clean your hands, unpack the sterile packaging of the mask, wear it quickly, and check the sealing and suitability. There is no scientific basis for shaking and volatile ethylene oxide residues, but it may accelerate the flow of microorganisms in the ambient air, resulting in pollution.
Instrument used to detect ethylene oxide residues
On November 30, the Provincial Center for Disease Control and Prevention conducted sampling and testing of ethylene oxide residues in some medical masks on the market. The specifications are independent packaging, 10 packs and 20 packs. The results all meet national standards, with the highest 1.96μg/g and the lowest 0.51μg/g.
Source: Pengpai News
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