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Application
It is used to test the percentage of materials containing bacteria suspended particles at the specified flow rate. The dual gas path simultaneous comparison sampling method is used to improve the accuracy of sampling, which is suitable for the performance testing of bacterial filtration efficiency of medical surgical masks by metrological inspection departments, scientific research institutes, medical mask manufacturers and other relevant departments.
Medical Masks bacterial filtration efficiency tester also called BFE test machine 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
YY0469-2004、YY/T 0969-2013、ASTMF2100、ASTMF2101、EN14683
Specifications:
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Key Specification
|
Specification Range |
Resolution |
Accuracy |
|
A Route Sampling Flow |
28.3L/min |
0.1L/min |
Within ± 2.% |
|
B Route Sampling Flow |
28.3L/min |
0.1L/min |
Within ±2.% |
|
Spray Flow |
(0.1~10)L/min |
0.1L/min |
Within ±2.5% |
|
Peristaltic Pump Flow |
(0.001~3.0)mL/min |
0.001ml/min |
Within ±2.5% |
|
Front Pressure of A Route Sampling Flowmeter |
(-20~0)kPa |
0.01kPa |
Within ±2.5% |
|
Front Pressure of B Route Sampling Flowmeter |
(-20~0)kPa |
0.01kPa |
Within ±2.5% |
|
Front Pressure of Spray Flowmeter |
(0~300)kPa |
0.1kPa |
Within ±2.5% |
|
Ambient Temperature |
(-40~99)℃ |
0.1℃ |
Within ±2.5% |
|
Negative Pressure of the Aerosol Chamber |
(-90~-120)Pa |
0.1Pa |
Within ±2.0% |
|
Negative Pressure of the Cabinet
|
-50~-200pa |
||
|
Data Storage Ability |
>100000 sets |
||
|
Vortex Mixer Test Tube Specification and Quantity
|
Φ16×150mm test tube，8pcs
|
||
|
High Efficiency Particulate Air Filter Properties |
Filter Efficiency≥99.99% for particles> 0.3μm |
||
|
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 |
Level1>7μm; Level 2: (4.7~7)μm; Level 3: (3.3~4.7)μm; Level 4: (2.1~3.3)μm; Level 5: (1.1~2.1)μm; Level 6: (0.6~1.1)μm |
||
|
Size of Aerosol Chamber
|
600×85×3mm (Length×Diameter×Thickness) |
||
|
Total number of positive quality control sampler particles
|
(2200±500)cfu |
||
|
Negative Chamber Flow Speed |
≥5m3/min |
||
|
Size of Negative Pressure Chamber Door(W×D) |
1000×730mm |
||
|
Size of Main Machine(W×D×H) |
1180×650×1300mm |
||
|
Size of Supporting Frame(W×D×H) |
1180×650×600mm, Height within 10cm is adjustable |
||
|
Noise of the Tester |
<65dB(A) |
||
|
Weight
|
150kg |
||
|
Power Supply |
AC220V±10%, 50Hz |
||
|
Power Consumption
|
<1500W |
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Features
1. Negative pressure experiment system to ensure the safety of operators;
2. Negative pressure cabinet with built-in peristaltic pump and A and B two-way six-stage Andersen;
3. The flow rate of the peristaltic pump can be set;
4. Dedicated microbial aerosol generator can set the volume of bacterial liquid spray flow, and the atomization effect is good;
5. Embedded high-speed industrial microcomputer control;
6.10.4-inch industrial-grade high-brightness color touch display;
7, USB interface, support U disk data transfer;
8. Built-in high-brightness lighting in the cabinet;
9. Built-in leakage protection switch to protect operator safety;
10. Insulation and flame retardant between inner and outer layers;
11. The front switch glass door is convenient for experimenters to observe and operate;
12. Detachable stand, the height of stand is adjustable;
13. Support and move dual-purpose casters.
Note: GBPI is always committed to product innovation and improved performance, so accordingly product technical specifications are subject to change without notice. GBPI reserves the right to amend and the final power of interpretation.
