Surgical mask, N95, KN95.. Silly can’t tell? After reading this article, you will understand the protection.
Original title surgical mask N95 KN95 Full Body Disposable Coverall Silly can’t tell You will understand after reading this article These days people all over the country are paying attention to masks- “medical masks” “medical nursing masks” “surgical mask” “medical protective masks” as well as “N95” and “KN95” and even “FFP2” Aren’t you dazzled It looks like a mess so many different names different types of masks will you really choose Today Xiaobian will talk about it for you Note surgical mask medical protective mask N95 and FFP2 can be used in medical institutions for protection KN95 cannot be used in medical institutions but ordinary people can choose by themselves Other masks are up to you Medical mask medical nursing mask Medical masks and medical nursing masks YY 0969 are mostly designed and manufactured by enterprises themselves Generally they can not guarantee the filtration of pathogenic microorganisms and dust They are generally used for routine nursing in hospitals Their main function is to block the daily cross-contamination between medical staff and patients and there is no particularly high requirement If it is used by the public that is to say it is used to block bad breath and pretend the actual effect of protection is not very ideal Medical surgical mask YY 0469-2011 Expand the full text
YY0469 requires the surgical respirator to have a Medical Disposable Coverall bacterial filtering performance Generally the filtration efficiency for non-oily particles should be more than 30% and the filtration efficiency for bacteria should be more than 95% (note that this is not the meaning of N95 and it should not be confused with the medical respirator) Surgical mask also has the requirement of synthetic blood penetration (which can be simply understood as impermeability) When making masks enterprises usually divide them into three layers the internal absorbent layer the middle filter layer and the external waterproof layer Each layer has a special role (here is the key point which will be used later) Because of the different workplaces the particulate matter that people are exposed to can generally be divided into two categories oily and non-oily of which the “KN” mask is mainly used to protect non-oily particulate matter while the “KP” mask can protect both oily and non-oily particulate matter such as the chemical industry is exposed to more oily particulate matter (such as paraffin) KP-type masks are generally used;
