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
|
