In addition to all kinds of masks that meet Chinese sta […]
In addition to all kinds of masks that meet Chinese standards, N95 masks often appear in the public eye, which is a mask that meets American standards. Medical protective masks in China are a type of N95 masks, but not all N95 masks are medical protective masks. There is also a FFP series of masks, which comply with the European standard EN149. Take FFP2 mask as an example, it can filter 94% of non-oily particles. If the N95 mask and FFP2 mask have not been tested for synthetic blood penetration and surface moisture resistance, the scope of use is the same as KN95.
All in all, from the perspective of protection ability, from strong to weak, they are medical protective masks, medical surgical masks, and disposable medical masks, while KN95, N95, and FFP2 masks have basically the same particle filtration efficiency. You should choose a suitable mask according to your personal situation. You should neither carelessly nor blindly pursue a mask with a protection level that clearly exceeds your own needs.
Cartoon color children's masks: not necessarily safe
Is it safe to print nice cartoon patterns and colors on masks? Many parents are worried when they buy children's masks: ordinary mask children are unwilling to wear, will the protective effect of colorful children's masks be discounted?
The new "Civilian Sanitary Masks" group standard stipulates that the fabric in direct contact with the skin shall not be dyed, but this requirement does not apply to the outer layer of the mask. Whether the outer layer of the mask is dyed or whether there are various patterns is designed by the enterprise itself, and the standard does not require it . However, Professor Jin Xiangyu bluntly said: "Buy beautiful masks carefully!" Because the pigments used for dyeing children's masks should meet food-grade standards, on the contrary, masks dyed with chemical raw materials will cause negative effects if they are worn for a long time.
Large, medium and small children's masks: reference age
This group standard has large (L), medium (M), and small (S) specifications for children's masks. Can the model be matched according to the age of the child?
Jin Xiangyu reminded that children's masks are not suitable for infants and young children aged 36 months and below. He suggested that the trumpet is generally suitable for children aged 3-6, because wearing a mask will affect breathing, young children should wear it carefully, parents must pay attention to observation and adjust at any time. The medium size is suitable for children aged 6-9, and the large size is generally recommended for children over 10 years old. He said that due to the individual differences in the growth and development of children, tall, short, fat, thin, etc. have a great influence on the face shape. The selection by age group is actually not completely scientific. It is only for reference. Best plan.
Disposable children's mask: change every day
Do you want to stock up child masks in preparation for school? Medical staff have strict regulations on the wearing time, and the wearing time and replacement frequency of children's masks have become an issue of great concern to parents. In this regard, Professor Jin suggested that everyone’s breathing volume, speech frequency and exercise volume are different, and there are no strict regulations on the mask wearing time for the public, including students. “Under normal circumstances, it is enough to use disposable masks to change them once a day. "More importantly, it is necessary to choose a children's mask of the appropriate size, and ensure the airtightness of the mask, teach children to press the metal strips on both sides of the nose bridge with both hands when wearing the mask, so that the upper end of the mask is close to the bridge of the nose, and the mask is stretched downward. So as not to leave wrinkles.