Limitations of N95 mask performance

2021/03/10

       The N95 mask(4mm 100%PP nose wire) is one of the nine anti-particulate masks certified by NIOSH (National Institute of Occupational Safety and Health). "N" means unsuitable for oily particles (the fume produced by cooking is oily particles, and the droplets produced by people talking or coughing are not oily); "95" means that under the testing conditions specified by the NIOSH standard, filter The efficiency reaches 95%. Although N95 masks help reduce the exposure level of certain inhalable microbial particles (such as mold, anthracis, tuberculosis, etc.), it still has limitations in its use. The following single-core nose bridge manufacturers will introduce the limitations of N95 masks.


1. Respiratory tract infectious diseases are not only spread through the respiratory tract;


2. Preventive measures should precede exposure;

 

3. The tight structure and high-efficiency filtration of the mask will increase breathing resistance and reduce comfort;

 

4. Suitability—If the mask design is not suitable for the user's face shape, it will cause leakage;

 

5. Under the requirements of suitability and correct use, protective masks can reduce the concentration of harmful substances by 90%.

 

6. The government has not established a safe exposure limit for pathogenic microorganisms. Respiratory protection only reduces the risk of illness, but does not eliminate the risk.