Because of the novel coronavirus, many people are buying masks. What kind of respirator do they buy? Let's have a look at the difference between kn95 and N95 masks.
Kn95 mask:
Kn95 respirator is actually a respirator that meets the requirements of gb2626 standard in China, which means national standard. The standard is that the filtration efficiency of non oil particles is ≥ 95%.
N95 mask:
N95 respirator is NIOSH certified in the United States, and the same standard is that the filtration efficiency of non oil particles ≥ 95%.
Kn95 and N95 masks need to be worn correctly:
Before wearing kn95 and N95 masks, you need to wash your hands first, and then you can wear them. The light color is inside, and the metal strip is on the top. Don't wear it wrong. Wearing it wrong can't play a protective role.
Time to change mask:
If kn95 or N95 masks are used normally, they can be replaced within 4 hours. Do not replace them too long, because if they are used too long, they will lose their functions.
In case of special circumstances, it needs to be replaced in time:
In some special cases, it can not be worn for a long time. 1. It's hard to breathe. 2. The mask is damaged. 3. The mask is contaminated. 4. There is a smell in the mask. 5. The mask can no longer fit the face. These situations need to be replaced in time.