Both kn95 masks and n95 masks are very good. KN95 masks and N95 masks are actually the same in terms of particle filtration efficiency.
First of all, the breathing resistance of the two masks is different. The breathing resistance of the N95 mask is greater than that of the KN95 mask, which makes the user feel more uncomfortable when wearing it for a long time.
Secondly, the standards required for these two types of masks are also slightly different. N95 masks are certified by the National Institute for Occupational Safety and Health and have strict requirements in terms of filtration efficiency, air leakage and service life. KN95 masks are certified by China Quality Supervision, Inspection and Quarantine, and have relatively low requirements for filtration efficiency, air leakage and service life.
Therefore, N95 masks may be slightly better than KN95 masks in terms of filtration efficiency and air leakage, but in actual use, the effects of the two masks are very similar.
Notes on purchasing masks
1. Filtering effect of masks: Choose masks with good filtering effects, such as N95 masks or medical surgical masks. These masks can effectively filter of fine particulate matter.
2. Appropriate size and fit: The mask should be able to completely cover the nose and mouth and seal well with the face. Make sure you choose a mask that fits your face and fits comfortably.
3. Breathability and comfort: The mask should have appropriate breathability so that you will not feel particularly uncomfortable when breathing. Some masks have additional features, such as breathing valves, that provide better comfort.
4. Comply with relevant standards and certification: Masks should comply with relevant local standards and certification requirements. For example, in China, masks should pass the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) or the National Medical Device Administration (NMPA) certification.
5. Purchase through formal channels: Try to purchase masks through formal channels, such as pharmacies, medical equipment stores or certified e-commerce platforms. Avoid buying masks from unknown sources.
Reference for the above content: Baidu Encyclopedia-Masks