Mask Bacterial Filtration Efficiency Tester

BFE tester measures medical mask bacterial filtration efficiency via aerosol challenge method.

Courriel : info@standard-groups.com

Face Masks bacterial filtration efficiency BFE tester is 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 tester provides certain flow rate of bacterial aerosol. The operator can measure the number of colony forming units passing through the medical face mask material, which is clamped between a six-stage Anderson cascade impactor and an aerosol chamber, expressed as a percentage of the number of colony forming units present in the challenge aerosol.

 

Standards of Masks Bacterial Filtration Efficiency Tester:

YY 0469 Technical requirements for surgical mask

BS EN 14683 Medical face masks - Requirements and test methods

ASTM F2100 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

NBR 15052

Video Description:
https://youtu.be/i0EM6Zr9hxk

 

Feature of BFE Testing Machine:

1. Negative pressure testing system, which can protect operator’s safety.

2. Peristaltic pump was built in the negative pressure cabinet, A & B two routes 6 level Andersen sampling head.

3. The flow speed of peristaltic pump can be set.

4. The spray flow of bacterial liquid inside the special microbial aerosol generator can be set.

5. Good atomization effect.

6. Embedded high speed industrial microcomputer control.

7. 10.4 "industrial high brightness color touch screen display.

8. USD connector, support USB data archived

9. High brightness light installed in the cabinet.

10.Switching type glass door in front of the machine, easy to observe by the operator.

 

Parameter of BFE Tester:

Key Specification	Specification Range	Resolution	Max. permissible errors
A Route Sampling Flow	28.3L/min	0.1L/min	Within ± 2.0%
B Route Sampling Flow	28.3L/min	0.1L/min	Within ±2.0%
Spray Flow	(8～10)L/min	0.1L/min	Within ±5.0%
Peristaltic Pump Flow	(0.006～3.0)mL/min	0.001ml/min	Within ±2.0%
Front Pressure of A Route Sampling Flowmeter	(-20～0)kPa	0.01kPa	Within ±2.0%
Front Pressure of B Route Sampling Flowmeter	(-20～0)kPa	0.01kPa	Within ±2.0%
Front Pressure of Spray  Flowmeter	(0～300)kPa	0.1kPa	Within ±2.0%
Negative Pressure of the Chamber	(-90～-120)Pa	0.1Pa	Within ±1.0%
Working Temperature	0-50℃
Negative Pressure of the Chamber	＞120Pa
Data Save Ability	＞500000 sets（Scalable capacity）
High Efficiency Particulate Air Filter Properties	≥99.995%@0.3μm, ≥99.995%@0.12μm
Median diameter of aerosol generator mass	Average diameter: (3.0±0.3)μm; Geometric Standard Deviation≤1.5
Double Routes 6-lever Andersen Sampling apparatus	LevelⅠ＞7μm;          Level Ⅱ: (4.7～7)μm; Level Ⅲ: (3.3～4.7)μm;  Level Ⅳ: (2.1～3.3)μm; Level Ⅴ: (1.1～2.1)μm;  Level Ⅵ: (0.6～1.1)μm
Size of Aerosol Chamber	600×80×3mm (Length×Diameter×Thickness)
Total number of positive quality control sampler particles	(2200±500)cfu
Negative Chamber Flow Speed	≥5m3/min
Size of Main Machine	1470×790×2100mm (L×W×H)
Power Supply	AC220V±10%, 50Hz
Noise of the Tester	＜65dB(A)
Weight	≈150kg
Power Consumption	＜1500W

Medical mask bacterial filtration efficiency tester, also known as BFE Tester, by using the ratio of the upstream bacterial challenge to the downstream residual concentration of the measured medical mask material, to determine the medical mask material(such as meltblown fabric)bacterial filtration efficiency(BFE).The machine provides a certain flow rate of bacterial aerosols.

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