Masks, understand it through standards

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At present, a nationwide fight against pneumonia caused by the novel coronavirus has begun. As the “first line of defense” for personal hygiene protection, it is very important to wear masks that meet epidemic prevention standards. From N95, KN95 to medical surgical masks, ordinary people may have some blind spots in the choice of masks. Here we summarize the knowledge points in the standard field to help you understand the common sense of masks.
What are the standards for masks?
At present, China’s main standards for masks include GB 2626-2006 “Respiratory protective equipment self-priming filter type anti-particulate respirator”, GB 19083-2010 “Technical requirements for medical protective masks”, YY 0469-2004 “Technical requirements for medical surgical masks” , GB/T 32610-2016 “Technical Specifications for Daily Protective Masks”, etc., covering labor protection, medical protection, civil protection and other fields.

GB 2626-2006 “Respiratory Protective Equipment Self-priming Filtering Anti-Particulate Respirator” was promulgated by the former General Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Management Committee. It is a mandatory standard for the full text and was implemented on December 1, 2006. The protection objects stipulated in the standard include all kinds of particulate matter, including dust, smoke, fog and microorganisms. It also stipulates the production and technical specifications of respiratory protective equipment, and the material, structure, appearance, performance, and filtration efficiency of dust masks ( Dust resistance rate), respiratory resistance, testing methods, product identification, packaging, etc. have strict requirements.

GB 19083-2010 “Technical Requirements for Medical Protective Masks” was promulgated by the former General Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Management Committee, and was implemented on August 1, 2011. This standard specifies the technical requirements, test methods, signs and instructions for use of medical protective masks, as well as packaging, transportation and storage. It is suitable for use in medical working environments to filter airborne particles and block droplets, blood, body fluids, secretions, etc. Self-priming filter medical protective mask. 4.10 of the standard is recommended, and the rest are mandatory.

YY 0469-2004 “Technical Requirements for Medical Surgical Masks” was promulgated by the State Food and Drug Administration as a standard for the pharmaceutical industry and was implemented on January 1, 2005. This standard specifies the technical requirements, test methods, signs and instructions for use, packaging, transportation and storage of medical surgical masks. The standard stipulates that the bacterial filtration efficiency of masks should not be less than 95%.
GB/T 32610-2016 “Technical Specifications for Daily Protective Masks” was issued by the former General Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Management Committee. It is my country’s first national standard for civilian protective masks and was implemented on November 1, 2016. The standard involves mask material requirements, structural requirements, label identification requirements, appearance requirements, etc. The main indicators include functional indicators, particulate matter filtration efficiency, expiratory and inspiratory resistance indicators, and adhesion indicators. The standard requires that masks should be able to safely and firmly protect the mouth and nose, and there should be no sharp corners and edges that can be touched. It has detailed regulations on factors that may cause harm to human bodies such as formaldehyde, dyes, and microorganisms to ensure that the public can wear them. Safety when wearing protective masks.

What are the common masks?

Now the most frequently mentioned masks include KN95, N95, medical surgical masks and so on.

The first is KN95 masks. According to the classification of the national standard GB2626-2006 “Respiratory protective equipment self-priming filter-type anti-particulate respirator”, masks are divided into KN and KP according to the efficiency level of the filter element. KP type is suitable for filtering oily particles, and KN type is suitable for filtering non-oily particles. Among them, when the KN95 mask is detected with sodium chloride particles, its filtration efficiency should be greater than or equal to 95%, that is, the filtration efficiency of non-oily particles above 0.075 microns is greater than or equal to 95%.

The N95 mask is one of the nine particulate protective masks certified by NIOSH (National Institute of Occupational Safety and Health). “N” means not resistant to oil. “95″ means that when exposed to a specified number of special test particles, the particle concentration inside the mask is more than 95% lower than the particle concentration outside the mask.

Is there a mask in the “Pin Word Mark”?

On November 9, 2018, the T/ZZB 0739-2018 “Civilian Oil Fume Respirator” developed by Jiande Chaomei Daily Chemical Co., Ltd. was released by the Zhejiang Brand Construction Association.
The main technical indicators of this standard are set according to product performance characteristics, refer to GB/T 32610-2016 “Technical Specifications for Daily Protective Masks”, combined with GB2626-2006 “Self-priming Filtered Particle Respirators”, GB19083-2010 “Medical Protection Standards such as Masks, US NIOSH “Protective Masks” and European Union EN149 “Protective Masks” are mainly used in the areas of respiratory protection in links with high oily particulates concentrations (such as kitchens and barbecue environments). The standard stipulates that the filtration efficiency of oily particles is more than 90%, and the remaining indicators are based on meeting the A-level standards of civil masks and the standards of oil-proof labor protection masks in Europe and the United States, and put forward higher requirements for leakage, respiratory resistance, microbial indicators, and pH. Added the requirement of delayed hypersensitivity index.

There are many protective masks with KN90\KN95 grade non-oily particles in the market. KP-type protective masks often have very high resistance, and their aesthetics and comfort are both industrial protective masks standards, which are difficult to meet the daily needs of the people.

The formulation of standards for civil oil fume masks has played a positive role in the health of the people. For the majority of kitchen workers, the formulation of this standard helps to select suitable protective equipment for their working environment.

Then there are medical surgical masks. According to the definition of YY 0469-2004 “Technical Requirements for Medical Surgical Masks”, medical surgical masks are “worn by clinical medical staff in an invasive operation environment, to provide protection for patients undergoing treatment and medical staff performing invasive operations, and prevent Medical surgical masks spread by blood, body fluids and splashes are masks worn by medical staff at work.” This type of mask is used in medical environments such as outpatient clinics, laboratories, and operating rooms, and is divided into a waterproof layer, a filter layer, and a comfort layer from the outside to the inside.

Scientific selection of masks

Experts said that in addition to providing effective protection, wearing masks must also take into account the comfort of the wearer and not bring negative effects such as biological hazards. Generally speaking, the higher the protective performance of a mask, the greater the impact on comfort performance. When people wear a mask and inhale, the mask has a certain resistance to air flow. When the inhalation resistance is too large, some people will feel dizziness, chest tightness and other discomforts.

Different people have different industries and physiques, so they have different requirements for the sealing, protection, comfort, and adaptability of masks. Some special populations, such as children, the elderly, and people with respiratory diseases and cardiovascular diseases, should carefully choose the type of masks. On the premise of ensuring safety, avoid accidents such as hypoxia and dizziness when wearing them for a long time.

Finally, remind everyone that no matter what type of masks, they must be properly handled after use to avoid becoming a new source of infection. Usually prepare a few more masks and replace them in time to build the first line of defense for health protection. I wish you all good health!

Like companies

Jiande Chaomei Daily Chemical Co., Ltd. was established in 1996. The company is a high-tech enterprise that specializes in the research and development and manufacturing of respiratory protection products. It is also a domestic first-class advanced professional dust-proof Chinese PPE professional manufacturer of masks. , Is one of the earliest domestic companies engaged in this field. The company has a building area of ​​42,000 square meters. At present, the company has an annual production capacity of more than 400 million professional masks. In 2003, in accordance with the instructions of the National Development and Reform Commission, North Korea exclusively provided protection for Beijing Xiaotangshan Hospital, Ditan Hospital, Beijing Infectious Disease Hospital, PLA General Logistics Department, 302 and 309 China-Japan Friendship Hospitals and the National Emergency Material Reserve Center “SARS” masks.

In order to fight against this new type of coronavirus pneumonia, North Korea and the United States urgently recalled surrounding employees with three times their wages to provide the most powerful material guarantee for the fighters who are fighting on the front line. It was praised by the headlines of CCTV News Network!

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Praise for such a conscientious “brand word mark” enterprise, and cheer for the fighters who are struggling on the front line. The people of the country strengthen their confidence, help each other, mobilize the whole people, and prevent and control the epidemic. We will surely win this battle against the epidemic.

Tips

Recently, the Zhejiang Provincial Institute of Standardization has quickly screened more than 20 international, foreign, national, industry and local standards for the needs of epidemic prevention and control standards around medical protective masks, medical protective clothing, medical protective equipment, etc., for purchase and import It has even guided companies to produce masks and other related protective products to provide standardized professional technical support, actively help improve the quality of epidemic prevention and control products, and solve the problem of shortage of medical supplies.


Post time: Aug-31-2020