How long can KN95 Protective Face Mask be used

Compared with other types of masks, KN95 Protective Face Mask are relatively expensive. Many friends have questions. Can you reuse kn95 mask? Of course, no problem.

Some researchers have studied the protective efficiency and wearing time of KN95 Protective Face Mask. The results showed that the filtration efficiency of kn95 mask was kept above 95% for 2 days, and the respiratory resistance was not changed much. After 3 days, the filtration efficiency decreased to 94.7%.

Kn95 will be used in different environments. For example, in the case of direct contact with bacteria and viruses, it usually lasts for 6 to 8 hours, not more than 8 hours. If used for general protection, the mask should be discarded when it comes into contact with blood or foam. If the mask is damaged, discard it. When respiratory resistance increases, discard it. If this is not the case, the general reference is to use two per week, and five working days if the maximum is one.