Shanghai Jingqi Mask Bacterial Filtration Efficiency (BFE) Detector, Shanghai Jingqi Instrument Co., Ltd. (CAT#: STEM-AI-0886-YJL)

Shanghai Jingqi Mask Bacterial Filtration Efficiency (BFE) Detector, model STEM-AI-0886-YJL is manufactured by Shanghai Jingqi Instrument Co., Ltd.
The main performance indicators of the mask Bacterial Filtration Efficiency (BFE) detector not only meet the requirements of B.1.1.1 test equipment in Appendix B Bacterial Filtration Efficiency (BFE) Test Method of "Technical Requirements for Medical Surgical Masks" YY0469-2011. It also meets the requirements of the American Society for Testing and Materials ASTMF2100, ASTMF2101, and European EN14683 standards. And on this basis, innovative improvements have been made. The dual-gas path simultaneous comparison sampling method improves the accuracy of sampling, and is suitable for performance testing of the bacterial filtration efficiency of masks by metrology and verification departments, scientific research institutes, mask manufacturers and other related departments.

Channel A sampling flow:
Parameter range: 28.3L/min
Resolution: 0.1L/min
Maximum allowable error: better than ±2.5%
Channel B sampling flow:
Parameter range: 28.3L/min
Resolution: 0.1L/min
Maximum allowable error: better than ±2.5%
Spray flow:
Parameter range: (8～10)L/min
Resolution: 0.1L/min
Maximum allowable error: better than ±5.0%
Peristaltic pump flow:
Parameter range: (0.006～3.0)mL/min
Resolution: 0.001ml/min
Maximum allowable error: better than ±2.5%
Front pressure of flowmeter in channel A:
Parameter range: (-20～0)kPa
Resolution: 0.01kPa
Maximum allowable error: better than ±2.5%
Front pressure of flowmeter in channel B:
Parameter range: (-20～0)kPa
Resolution: 0.01kPa
Maximum allowable error: better than ±2.5%
Pressure before the spray flowmeter:
Parameter range: (0～300)kPa
Resolution: 0.1kPa
Maximum allowable error: better than ±2.5%
Aerosol chamber negative pressure:
Parameter range: (-90～-120)Pa
Resolution: 0.1Pa
Maximum allowable error: better than ±2.0%
Working temperature: (0～50)℃
Cabinet negative pressure: (-50～-200)Pa
Data storage capacity: ＞100000 groups
High-efficiency air filter characteristics: the filtration efficiency of particles above 0.3um is ≥99.99%
Aerosol generator mass median diameter: average particle diameter (3.0±0.3) μm, geometric standard deviation ≤1.5
Two-way 6-stage Anderson sampler captured particle size: Class I>7μm, Class II (4.7～7) μm, Class III (3.3～4.7) μm, Class IV (2.1～3.3) μm, Class V (1.1～2.1) μm, Grade VI (0.6～1.1)μm
Aerosol chamber specification: (L*W*H 600)mm, height adjustable within 100mm
Working power supply: AC220V±10%, 50Hz
Instrument noise: ＜65dB(A)
Machine weight: about 150kg
Machine power consumption: ＜1500W

Negative pressure test system ensures the safety of operators.
The negative pressure cabinet has a built-in peristaltic pump, A and B two-way six-stage Andersen; the flow rate of the peristaltic pump can be set.
The special microbial aerosol generator bacteria night spray flow size can be set, and the atomization effect is good.
Embedded high-speed industrial microcomputer control.
10.4-inch industrial-grade high-brightness color touch display screen; USB interface, supports U disk data transfer.
The cabinet has built-in high-brightness lighting.
Built-in leakage protection switch to protect the safety of operators.
The inner layer of the cabinet is made of stainless steel as a whole, and the outer layer is sprayed with cold-rolled plates.
The front switch type glass door is convenient for the experimenter to observe and operate; the detachable bracket is adjustable in height.
Dual-purpose casters for support and movement.

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