Used to test the percentage of bacterial suspended particles removed by mask materials at a specified flow rate. Adopting a dual gas path comparative

 sampling method to improve the accuracy of sampling, it is suitable for performance testing of bacterial 

filtration efficiency of medical surgical masks by detection units, measurement units, and medical mask production enterprises

The chassis adopts a glass door structure, which is convenient for experimental personnel to observe and operate. Install high brightness lighting 

inside the cabinet. Adopting a 17 inch industrial computer and independently developed PLC control