A novel corona virus (covid-19) outbreak was first documented in Wuhan, Hubei Province, China in December 2019.Common signs of COVID-19 infection are similar to the common cold and include symptoms such as dry cough, fever, shortness of breath, and breathing difficulties and suffocation . In some cases, infection can cause severe acute respiratory syndrome, kidney failure, and death and it’s also harmful for previously suffering from any illness.
It’s been 2 year but we do not relief from this pandemic. This very dangerous virus in our world its kills people every time and so many families become hopeless. It’s mainly transmitted by close contract and cough breath and etc. So every time we need to keep distance from other people and its make as much more unsocial and cruel .We use mask ,hand sanitizer gloves head shield and so on but doing all this we can’t not stop death. In this main time we need to use good mask which protect us from this dangerous corona virus. Surgical mask are not 100% good for our safety but there is no way to that’s why we use any type of mask without knowing its safety.
There are many type of mask available in market such as KN95 Masks, Disposable Masks, Cloth Masks but we don’t know which mask is good for our safety .Basically KN95 is best case it has very safety filter .But some good surgical mask is available in market which is very good such as ASTM F3502 mask. Finally, the American Society for Testing and Materials (ASTM) has established a national standard ASTM F3502 for Face Coverings that are neither medical masks .ASTM standards used in the production and testing of personal protective equipment including face masks, medical gowns, gloves, and some medical things. They answer the worldwide COVID-19 public health emergency. F3502−21 Standard Specification for Barrier Face Coverings.To know more about ASTM F3502-21 Information click here
F3502 masks are significantly more breathable than medical grade respirators, while also being laboratory certified to achieve adequate levels of filtration against fine aerosols. This unique balance of comfort and protection makes them the good feel.
The development of this national standard provides a uniform baseline that permits comparison of product claims in terms of filtration efficiency, breathability, re-use potential, and leakage in proper way. To know more about
Some Useful information:
Filtration efficiency: Filtration efficiency refers to how well the BFC material blocks particles from browsing it when the user is exhaling or inhaling. The higher the level of filtration efficiency, F3502 mask follows this stranded
Breathability: ASTM requiring a method similar to that used to evaluate respirator filters. The airflow resistance of a BFC must be in 15 mm H2O or below which is standard values. F3502 mask maintain this values.
Re-use potential: It can be reuse after use so it’s for ASTM standard requirements for filtration efficiency and breathability.To know more about click here ASTM F3502 Information
So in 2021 corona virus become more dangerous and we have to become more conscious about more than previous year. So for better protection we must use KN95, ASTM F3502 level mask.
