Mask bacterial filtration efficiency bfe detector The main performance indicators of the Mask bacterial filtration efficiency bfe detector not only meet the requirements of the B.1.1 test instrument of the test method for bacterial filtration efficiency (BFE) in Appendix B of "Technical Requirements for Masks" YY0469-2011, but also meet the requirements of the American Society for Testing Materials ASTMF2100, ASTMF2101, The requirements stipulated in the European EN14683 standard, and innovative improvements have been made on this basis. The dual gas path simultaneous comparison sampling method is used to improve the accuracy of sampling. It is suitable for metrological verification departments, scientific research institutes, mask manufacturers and other related Departmental performance testing of the bacterial filtration efficiency of masks. Features: 1. The negative pressure test system is adopted to ensure the safety of operators; 2. Measuring system, built-in liquid supply system, equipped with I, II two-way 6-level Anderson sampling system; 3. The flow rate of the peristaltic pump can be set according to the specific situation; 4. Using the microbial aerosol generator, the flow rate of bacterial liquid mist can be adjusted and set, and the atomization effect is good; 5. The control system adopts PLC+LabView control, 10-inch high-brightness color touch screen, USB interface, and supports U disk data transfer; 6. Built-in high-brightness lighting for easy observation; 7. All flow control adopts mass flow control system; 8. The front glass door is convenient for the operator to observe the experimental process. technical parameter: Vacuum pump: oil-free rotary vane vacuum pump, flow rate up to 57LPM; equipped with xiao sounder, stable airflow, negative pressure -900pa Aerosol generator flow control: the aerosol generator flow control adopts mass flow control, and the control is accurate ps: (WLJCDM809) web: https://www.qinsun-lab.com/