A. Scope of Application:
It is used for the performance test of the bacteria filtration efficiency of face masks by metrological verification departments, scientific research institutes, face mask manufacturers, etc.
B. Applicable Standards:
GB/T 32610-2016: Technical specification of daily protective mask
YY0469-2011: Surgical mask
C. Equipment Features:
1. Negative pressure experiment system to ensure the safety of operators.
2. The negative pressure cabinet has a built-in peristaltic pump, and AB two-way Six Stage Microbial Andersen Cascade Impactor.
3. The flow rate of the peristaltic pump can be set.
4. The spray flow of the bacterial liquid of the dedicated microbial aerosol generator can be set.
5. Good atomization effect.
6. Embedded high-speed industrial microcomputer control.
7. 10.4-inch industrial-grade high-brightness color touch screen.
8. USB interface, support thumb drive data transfer.
9. Built-in high-brightness lighting lamp.
10. A Front-opening glass door is convenient for experimenters to observe and operate.
11. AC220/50HZ
D. Technical Parameters
Main Parameters Range Accuracy Maximum Tolerable Deviation Channel A Sample Flow 28.3L/min 0.1L/min Better than ±2.5% Channel B Sample Flow 28.3L/min 0.1L/min Better than ±2.5% Spray Flow (8～10)L/min 0.1L/min Better than ±5.0% Peristaltic Pump Flow (0.006～3.0)mL/min 0.001ml/min Better than ±2.5% Aerosol Chamber Negative Pressure (-90～-120)Pa 0.1Pa Better than ±2.0% Temperature (0～50)℃ Data Storage Capacity >100000 sets High-Efficiency Air Filter Filtration efficiency ≥99.99% for particles over 0.3um Aerosol Generator Average particle diameter (3.0±0.3)μm, the geometric standard deviation ≤1.5 Particle Size Captured by two-way 6 Stage Microbial Andersen Cascade Impactor Level I＞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 Aerosol Chamber Dimensions (Length 600 × diameter 85 × thickness 3) mm Total particles before filtration (2200±500)cfu Cabinet Dimensions (L 1200× W 700× H 500)mm Overall Dimensions (L 1600× W 600× H 1950+250)mm Power Supply AC220V±10%，50Hz Noise <65dB(A) Weight About 150kg Power Dissipation <1500W
Main Parameters
Range
Accuracy
Maximum Tolerable Deviation
Channel A Sample Flow
28.3L/min
0.1L/min
Better than ±2.5%
Channel B Sample Flow
Spray Flow
(8～10)L/min
Better than ±5.0%
Peristaltic Pump Flow
(0.006～3.0)mL/min
0.001ml/min
Aerosol Chamber Negative Pressure
(-90～-120)Pa
0.1Pa
Better than ±2.0%
Temperature
(0～50)℃
Data Storage Capacity
>100000 sets
High-Efficiency Air Filter
Filtration efficiency ≥99.99% for particles over 0.3um
Aerosol Generator
Average particle diameter (3.0±0.3)μm, the geometric standard deviation ≤1.5
Particle Size Captured by two-way 6 Stage Microbial Andersen Cascade Impactor
Level I＞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
Aerosol Chamber Dimensions
(Length 600 × diameter 85 × thickness 3) mm
Total particles before filtration
(2200±500)cfu
Cabinet Dimensions
(L 1200× W 700× H 500)mm
Overall Dimensions
(L 1600× W 600× H 1950+250)mm
Power Supply
AC220V±10%，50Hz
Noise
<65dB(A)
Weight
About 150kg
Power Dissipation
<1500W
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