Mask Bacterial Filtration Efficiency (BFE) Tester

Main parameter

Parameter range

Resolution

Accuracy

Sampling flow

28.3L/min

0.1L/min

Better than ±2.5%

Spray flow

(8～10)L/min

0.1L/min

Better than ±2.5%

Peristaltic pump flow

(0.006～3.0)ml/min

0.001ml/min

Better than ±2.5%

Front pressure of flowmeter

(-20～0)KPa

0.01KPa

Better than ±2.5%

Front pressure of Spray flowmeter

(0～300)KPa

0.1KPa

Better than ±2.5%

Ambient temperature

(-40～99)℃

0.1℃

Better than ±2.5%

Negative pressure of aerosol chamber

(-90～-120)Pa

0.1Pa

Better than ±2.0%

Negative pressure of cabinet

-50～-200Pa

Data storage capacity

>100000 groups

Specification and quantity of vortex mixer test tube

Φ16×150mm tube;8

High efficiency air filter characteristics

Filtration efficiency for particles above 0.3um≥99.99%

Mass median diameter of aerosol generator

3.0± 0.3μm，Geometric standard deviation≤1.5

Integrated 6 Grades Andersen

Sampler capture particle size

Grade I＞7μm，Grade Ⅱ(4.7～7)μm，Grade Ⅲ(3.3～4.7)μm，Grade Ⅳ(2.1～3.3)μm，Grade Ⅴ(1.1～2.1)μm，Grade Ⅵ(0.6～1.1)μm

Aerosol chamber specifications

60cm（Length）×8.5 cm（Diameter）× 3cm（Thickness）

Total number of particles of positive quality control sampler

2200±500cfu

Ventilation flow of negative pressure cabinet

≥5m3/min

Size of negative pressure cabinet

755×400×990mm (W×D×H)

Size of host

1200×630×2100mm (W×D×H)

Instrument noise

<65dB(A)

Total Weight

About150kg

Power supply

AC220V±10%，50Hz

Power consumption

<1500W