Application of the peristaltic pump--Detection of bacterial filtration efficiency of masks

Keywords:peristaltic pump
Detection of bacterial filtration ef

After the COVID-19, the mask has become an essential protective device in daily life, providing us with the most basic protection. It is very important to meet all quality standards of protective masks to protect people's health and safety. Therefore, the detection of protective masks is an essential key link. The multi-dimensional whole test of a mask contains more than 20 items, among which the bacterial filtration efficiency is one of the important indicators in the test. The Chuangrui peristaltic pump is used to transfer the bacteria suspension on the bacteria filtration efficiency detection equipment of the mask, providing necessary conditions for accurate detection.
Microbial indicators (such as Staphylococcus aureus suspension) are pumped to the aerosol nozzle of the aerosol generator by a peristaltic pump, and the air source is also transported to the aerosol nozzle of the aerosol generator so that the microbial suspension atomizes in the aerosol generator and produces bacterial aerosol.
After sampling the bacteria by the biological sampler, the bacteria culture was carried out. Finally, the filtration efficiency of the mask was calculated based on the concentration of bacterial aerosol before and after filtration.
 

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