Currently, there is no clear conclusion about the lifespan of KN95 masks, including from the WHO, and there is no relevant regulation that addresses this either.
Some researchers have studied the protective efficiency and wearing time of KN95 medical masks. The results show that the filtration efficiency remains above 95% KN95 wearing the masks for 2+ days, and the respiratory resistance changes little, and the filtration efficiency decreases to 94.7% for 3 days.
Different countries use different codes and numbers to name their respiratory face masks. They are all very similar. The N95 is the USA standard, The KN95 is the China standard, The KF94 is the Korean standard and FFP2 is the EU standard. This includes the UK. N indicates that the mask is Not resistant to oil, can be used to protect non-oil suspended particles; 95 defines that the filtration efficiency is greater than or equal to 95%, indicating that after careful testing, this respirator can block at least 95% of very small (0.3-micron level) test particles. When worn correctly, the KN95`s filtering ability is better than the ordinary mask and medical mask. However, even if worn in full compliance, 100 per cent of the risk of infection cannot be eliminated. READY TO SHIP TODAY! FAST N FREE! AUS WIDE!Shop Now Fast 'n' Free Delivery Australia Wide.
For Men Women Kids Seniors-Filter with comfortable material,it will not rub/hurt your face and makeup.Patented filter technology makes breathing easier and cooler for enhanced comfort.
You don't have to worry about size when purchasing because it has Adjustable Nose Bridge also provides additional feature that is to increase sealing effect so anyone comfortably with any shape of face and nose without any hassle
Its filtration efficiency（dust-removing rate）is more than 95% for non-oily particulate matter above 0.075 microns, and the filter material is harmless to the human body.