Production and testing standards for PFE99 masks
- Categories:Industry Information
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- Time of issue:2022-04-21
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(Summary description)If the PFE99 mask is not designed to fit closely with the wearer's face, the high-efficiency filter material in the mask will not work. Particulate matter will easily leak into the mask from any leaking gaps on the PFE99 mask with the airflow. Therefore, when discussing the particle filtration efficiency of PFE99 masks, there should be tightness requirements for PFE99 masks at the same time.
Production and testing standards for PFE99 masks
(Summary description)If the PFE99 mask is not designed to fit closely with the wearer's face, the high-efficiency filter material in the mask will not work. Particulate matter will easily leak into the mask from any leaking gaps on the PFE99 mask with the airflow. Therefore, when discussing the particle filtration efficiency of PFE99 masks, there should be tightness requirements for PFE99 masks at the same time.
- Categories:Industry Information
- Author:
- Origin:
- Time of issue:2022-04-21
- Views:
Information
If the PFE99 mask is not designed to fit closely with the wearer's face, the high-efficiency filter material in the mask will not work. Particulate matter will easily leak into the mask from any leaking gaps on the PFE99 mask with the airflow. Therefore, when discussing the particle filtration efficiency of PFE99 masks, there should be tightness requirements for PFE99 masks at the same time.
According to my country's national standard for particulate protective masks, such as PFE99. When testing the filtration efficiency of PFE99 in the laboratory, very harsh conditions are used. This included choosing a test PFE99 flow rate of 85 liters per minute, which corresponds to the peak inspiratory level for adults with moderate labor.
It is also necessary to use PFE99 to try to filter various filter materials, which are the most difficult to filter non-static particles with aerodynamic particle size of about 0.3 microns. In addition, the filter cotton of PFE99 should be continuously loaded with particulate matter for investigation. For PFE99-level protective masks, the filtration efficiency is required to reach at least 99%; not only that, but also to detect the overall leakage level of PFE99 masks in the state of being worn by real people and simulating physical activity.
Through the above introduction and analysis of PFE99, hope it helps you.
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