The microbial indicator (such as Staphylococcus aureus suspension) is pumped to the spray port of the aerosol generator by a peristaltic pump, and the air source is also delivered to the spray port of the aerosol generator, so that the microbial suspension is fogged in the aerosol generator. produce bacterial aerosols. Bacteria were sampled by a biosampler and then cultured. Finally, the filtration efficiency of the mask is calculated according to the bacterial aerosol concentration before and after the mask is filtered.

The bacterial filtration testing equipment for masks produced by customers has a built-in Rongbo peristaltic pump for transferring bacterial suspensions to the aerosol chamber. The suspension meets the high pressure gas at the spray port of the aerosol chamber to generate the aerosol. By comparing the concentration of bacterial aerosols before and after filtration, it is detected whether the bacterial filtration efficiency of the mask meets the relevant standards.

Application points

Peristaltic pump flow is linearly adjustable

Flow range: 0.006～3.0(ml/min)

Flow accuracy: higher than ±2.5%

Control mode: RS485 interface, support Modbus RTU communication protocol

The viability of the bacteria is not destroyed during the transfer of the bacterial suspension