Do you know the difference between n95 masks and ordinary medical masks?

Disposable general medical surgical masks: Disposable general medical surgical masks, suitable for safety and hygiene in the natural environment of general diagnosis and treatment without the risk of blood and splashing, suitable for general diagnosis and treatment activities, for the general low diffusion coefficient. Low concentrations of germs pollute the natural environment.

Features: Compared with surgical protective masks for medical equipment and dust masks for medical equipment, the filtration efficiency of particulate matter and bacteria is relatively low, but the high efficiency of filtering is higher than that of general cotton textile protective masks in social development.

Disposable surgical protective masks for medical equipment: Disposable surgical protective masks are more suitable for the safety protection of blocking blood, blood and their splashes during invasive operations. They are mainly used for medical staff and related staff in designated medical institutions. The basic safety protection of general doctors and hospital wards of infectious diseases needs to wear such protective masks.

Key features: safety protection for blocking blood, blood and its splashes in invasive operations, and safety protection for respiratory diseases spread by droplets, able to block infection coefficients (bacteria, viruses, etc. Infections and other pathogenic microbial species, etc.).

Disposable KN95 mask: verified by NIOSH in the UK, the filtration efficiency of non-oily particulate matter is ≥95%.

KN95 protective mask: In line with our China GB2626 mandatory standards, the filtration efficiency of non-oily particulate matter is ≥95%.

But what we need to understand is that "the key standards for industrial masks and daily necessities are actually the same. KN95 according to the GB2626 standard is enough, and KN90 is actually sufficient. Only the staff of medical staff will have blood splashes, naturally The environment concentration value is very high, it needs to be very strict.

However, it should be noted that although some star protective masks are more beautiful and generous, they have no effect on the actual effect of safety protection.

In response to the problem of the replacement frequency of masks, the professional and technical personnel stated that if they are dirty, they should be replaced at the beginning, and it will vary from three to five days.

In fact, regarding the frequency of replacement, at this stage, there is no established basis for the best wearing time of N95 protective masks overseas, including WHO, and there is no relevant requirement for the use time of masks in my country. .

Relevant academic research has done relevant scientific research on the safety protection efficiency of N95 medical equipment dust masks and the wearing time. According to the relevant result data information, N95 masks are worn for 2 days, and the filtration efficiency can still be maintained. Above 95%, the inhalation friction resistance does not change much; the filtration efficiency decreases to about 94.7% after wearing for 3 days.