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Bacterial & Viral Filtration Efficiency (BFE/VFE) Tester

Bacterial Filtration Efficiency Testeris to determine the bacterial filtration efficiency (BFE) of medical face mask materials by employing a ratio of the upstream bacterial challenge to downstream residual concentration of the tested medical face mask materials. The control console adopts microcomputer control system to coordinate and control the work of aerosol generation system, transmission system, negative pressure cabinet and sampling system, and display the working status in real time. The whole measurement work is completed automatically.

Mask Bacterial Filtration Efficiency Tester Standards:

YY 0469-2004 Technical requirements for surgical mask

BS EN 14683-2014 Medical face masks - Requirements and test methods

ASTM F2100-2019 Standard Specification for Performance of Materials Used in Medical Face Masks

ASTM F2101 Standard Test Method for Evaluating the Bacterial Filtration Efficiency (BFE) of Medical Face Mask Materials, Using a Biological Aerosol of Staphylococcus aureus

Masks Bacterial Filtration Efficiency (BFE) Tester Parameter:

Cabinet negative pressure	Data can be downloaded via usb flash drive
Data storage capacity	Data can be downloaded via usb flash drive
mass flow controller	0-20L/min,resolution:0.1 L/min
Peristaltic pump flow	(0.01~3.0)mL/min
High efficiency air filter characteristics	The filtration efficiency of particles above 0.3um is≥99.99%
Median mass diameter of aerosol generator	The average particle diameter was(3.0±0.3)μm,Geometric standard deviation≤1.5
Two-channel 6-stage Anderson sampler captures particle size	Ⅰclass>7μm,class(4.7~7)μm,Ⅲ class(3.3~4.7)μm,class(2.1~3.3)μm,class(1.1~2.1)μm,class(0.6~1.1)μm
Fog chamber specifications	(600×80×5)mm
Total number of positive quality control sampler particles	(2200±500)cfu
Ventilation flow of negative pressure system	800m³/min
Operation room dimension	(740×940×440)mm
dimension	About 1200×650×2100mm
Instrument noise	<65Db(A)
weight	120kg
power consumption	<1500W