Some Common Sense Of Masks

- May 09, 2020-

1. What is a protective mask?


As long as it is a mask, it is all protective.




2. What are sterilized and non-sterile types?


simply put,


For sterilized and non-sterilized medical masks,


The production requirements are all 100,000 class dust-free workshops,


Non-sterile meets daily,


Sterilized for medical places that require strict control of the microbial environment,


Give a chestnut, ICU, operating room.




3. Is the disposable protective mask sterilized?


Regular disposable protective masks,


Although there is no standard sterilization or non-sterilization,


It was sterilized during production,


It ’s just not sterilized with ethylene oxide,


There will still be microbial residues,


But does not affect daily use.




4. Why are masks not sterilized?


Because it needs to be sterilized,


To meet the higher requirements of microbiological limit indicators,


You must first sterilize with ethylene oxide,


After another 14 days of analysis,


In order to become a qualified sterilization mask,


These sterilization masks,


High production requirements and long time.


But in order to provide more protective masks as soon as possible,


These masks without standard sterilization after other sterilization methods,


It can also meet most of the protection needs of the market.



5. In the Chinese classification, what is KN and KP?


KN type: suitable for filtering non-oily particulate matter;


KP type: suitable for filtering oily and non-oily particulate matter.




6. What is filtering oily and non-oily particulate matter?


Non-oily particulate matter; solid and non-oily liquid particulate matter and microorganisms, such as coal dust, cement dust, acid mist, paint mist, etc .;


Oily particulate matter: oily smoke, oily dirt, asphalt smoke, coke oven flue gas, particulate matter in diesel exhaust, etc.




7. What is N, P, R in the US classification?


N: Non-oil means filtering non-oily particulate matter.




R: Namely Oil Resistance,


Refers to filtering oily and non-oily particulate matter,


When used for oily particulate matter,


Restricted use time should not exceed 8 hours of working time.




P: Namely Oil Protective,


Refers to filtering oily and non-oily particulate matter,


When used for oily particulate matter, the use time refers to the manufacturer's recommendations,


3M recommends no more than 40 hours or 30 days, whichever comes early.