Bacterial filtration efficiency tester

Model: PW-BFE01
Product instruction

The mask bacterial filtration efficiency (BFE) detector is mainly applicable to the measurement and verification departments, scientific research institutes, medical mask manufacturers and their related testing departments for the performance test of the mask bacterial filtration efficiency.

It mainly conforms to the test method for Bacterial filtration efficiency (BFE) in Appendix B of YY0469-2011 "Technical Requirements for Medical Surgical Masks".It also meets the requirements of ASTM F2100, ASTM F2101 and EN 14683.

Product  principle
It is composed of aerosol generation system, aerosol chamber and aerosol transmission device, negative pressure cabinet, 28.3L/min sampler, etc. The whole detector is uniformly controlled by the console.The console USES microcomputer control system to coordinate and control the work of aerosol generation system, transmission system, negative pressure cabinet and sampling system, and displays the working status in real time, and the whole measurement work is completed automatically.
Product feature

1. Negative pressure test system to ensure the safety of operators

2. Built-in peristaltic pump in negative pressure cabinet, A,B, two channels and six levels of Anderson

3 peristaltic pump flow size can be set according to the situation

4. The aerosol flow rate of microbial liquid can be set, with good atomization effect.

5. Industrial microcomputer control

6. High-brightness color touch screen;

7.USB interface, support U disk data transfer and storage.

8. Built-in high-brightness lighting.Easy to observe.

9. Built-in leakage protection switch, to protect the safety of operators.

10. Front glass door, easy for operator to observe operation

Main Parameters Parameters
Model PW-BFE01
Vacuum pump Oil-free rotary vacuum pump, maximum flow up to 57LPM, equipped with muffler, airflow stability
Aerosol generator flow control Aerosol generator flow control adopts mass flow control,Accurate control
I channel sampling flow rate Anderson sampling rate: 28.3L/min,Resolution:0.1L/min
II channel sampling flow rate Anderson sampling rate: 28.3L/min,Resolution:0.1L/min
I,II channel sampling Equipped with mass flow controller
1 Pneumatic pressure 0-5KPa
II Pneumatic pressure 0-5KPa
Spray flowmeter pressure
Working temperature
Air chamber negative pressure 0-120KPa
Work temperature 0-50°C
Cabinet negative pressure 0-120Pa
Data storage capacity Date can be download via USB flash drive
Mass flow controller 0-20L/min,Resolution:0.1 L/min
Peristaltic pump flow (0.01~3.0)mL/min
Characteristics of hePA filters Filtration efficiency of particles above 0.3um ≥99.99%
Median mass diameter of aerosol generator Mean particle diameter (3.0±0.3)μm,geometric standard deviation ≤1.5
Dual channel 6 - stage Anderson sampler captures particle size Ⅰlevel>7μm,Ⅱ level (4.7~7)μm,Ⅲ level(3.3~4.7)μm,Ⅳ level(2.1~3.3)μm,Ⅴ level(1.1~2.1)μm,Ⅵ level (0.6~1.1)μm
Air chamber specifications (600×80×5)mm
Total number of particles in positive quality control sampler (2200±500)cfu
Ventilation rate of negative pressure system 800m³/min
Operation room size 740×940×440 mm
The dimensions  1200×650×2100 mm
Instrument noise <65Db(A)
weight 120kg
Whole machine power consumption <1500W 

BFE experimental system host

Level 6 Anderson sampler

Aerosol generator

Glass mixing chamber

Sampling pump

The silicone tube

Note: Technical specifications and appearance of the equipment are subject to change without prior notice.