KN95 what does it mean?
Since the global outbreak of coronavirus (COVID-19), essential equipment that aids in its prevention has run out of supply, including respirators, surgical masks, KN95, and N95. However, understanding this prevention equipment and their function will aids significantly, especially during these trying times. There are different types of masks available in today’s market, and they feature different functions, and understanding them better will be best for you. Therefore, in this article, we shall be answering the question; KN95, what does it mean?
What is KN95?
KN95 are masks that have been designed to meet the requirement of the China GB2626 standards. This means it features more than 95% filtration efficiency for non-oily particles. Most individuals tend to confuse KN95 with N95; however, N95 masks are masks that refer to the United States of America NIOSH certification, and it features more than 95% filtration efficiency of non-oily particles.
For a mask to be classified as a KN95 mask, the government of China requires the manufacturer to perform a mask fit test on humans and achieve less than 8% leakage. This is a highly essential step, and most hospitals tend to go for masks that have undergone a fit test. Unlike KN95, N95 does not undergo mask fit tests since the United States NIOSH certification does not require it.
Just like N95, KN95 is very effective, and they are said to be the most suitable for use, according to the United States Center for Disease Control. KN95 has been recently used as a substitute for N95 since they are short of supply. However, when it comes to their functions and ability, KN95 and N95 work pretty much the same.
For how long should one wear a KN95 mask?
Up to date, there is no clear conclusion on the best wearing time for KN95 masks, including the World Health Organization. Furthermore, the Chinese have not as well come up with the recommended wearing time for the KN95 masks.
However, some researchers have studied KN95 protective efficiency and along with the wearing time. The research shows that its effectiveness remains at 95%, and the wearing time is said to be two days. In addition to that, it is said that the respiratory resistance tends to change little by little while filtration efficiency will decrease to 94.7% within three days.
When should you change your KN95 mask?
A KN95 mask should not be used for an extended period of time. Some of the aspects you need to consider to change a KN95 mask include the following;
- After three days since its filtration efficiency tends to drop significantly
- When it becomes contaminated
- When your mask becomes damaged
- Whenever your respiratory impedance increases
- You should consider changing it when the mask and the face cannot close.
Choosing the right mask and understanding its function and the right time to change is highly essential, especially during this pandemic. As we conclude, you should always keep in mind that, despite the fact that N95 and KN95 have some slight differences, they feature the same functions and are both essential when it comes to preventing microbes from the air.