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Mask bacterial filtration efficiency (BFE) detector

The main performance indexes of ZR-1000 mask bacterial filtration efficiency (BFE) detector not only meet the requirements of test instrument B.1.1 in Appendix B of technical requirements for medical surgical masks (yy0469-2011), but also meet the requirements of ASTMF2100, ASTMF2101 and European EN14683, On this basis, the innovative improvement is carried out, and the method of double gas path simultaneous comparison sampling is adopted to improve the accuracy of sampling, which is applicable to the performance test of the bacterial filtration efficiency of the mask by the metrological verification department, scientific research institutes, mask manufacturers and other relevant departments.


Technology advantage:

  • The negative pressure test system ensures the safety of operators;

  • The negative pressure cabinet is equipped with peristaltic pump, a and B two-way six stage Anderson;

  • The flow of peristaltic pump can be set;

  • The flow rate of night spray for special microbial aerosol generator can be set.

  • Good atomization effect;

  •  Embedded high-speed industrial microcomputer control;

  • 10.4-inch industrial high brightness color touch screen;

  • USB interface, supporting data transfer of USB disk;

  • High brightness lighting lamp is built in the cabinet;

  • Built in leakage protection switch to protect the safety of operators;

  • The inner layer of the cabinet is made of stainless steel, and the outer layer is sprayed with cold-rolled plastic plate,

  • Heat preservation and flame retardant between inner and outer layers;

  • The front opening and closing glass door is convenient for the experimental personnel to observe and operate;

  • Detachable support, with adjustable support height;

  • Support and move dual-purpose casters.


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Main parameter

Parameter range

Resolving power

Maximum permissible error

Sampling flow of channel A

28.3L/min

0.1L/min

±2.5%

Sampling flow of channel B

28.3L/min

0.1L/min

±2.5%

Spray flow rate

(8~10)L/min

0.1L/min

±5.0%

Peristaltic pump flow

(0.006~3.0)mL/min

0.001ml/min

±2.5%

Front pressure of A-way flowmeter

(-20~0)kPa

0.01kPa

±2.5%

Front pressure of B-way flowmeter

(-20~0)kPa

0.01kPa

±2.5%

Front pressure of spray flowmeter

(0~300)kPa

0.1kPa

±2.5%

Negative pressure of air mist chamber

(-90~-120)Pa

0.1Pa

±2.0%

working temperature

(0~50)℃

Cabinet negative pressure

(-50~-200)Pa

Data storage capacity

>100000

Characteristics of high efficiency air filter

Filter efficiency for particles above 0.3um 99.99%

Mean mass diameter of aerosol generator

Average particle diameter (3.0 ± 0.3) μm, geometric standard deviation ≤ 1.5

Two-way 6-stage Anderson sampler to capture particle size

Class I > 7 μm, 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, class VI (0.6-1.1) μM

Specifications of air mist chamber

(length 600 × diameter 85 × thickness 3) mm

Total number of particles in positive quality control sampler

(2200±500)cfu

Negative pressure cabinet ventilation flow

≥5m3/min

Negative pressure cabinet door size

(length 1000 × width 730) mm

Host size

(length 1180 × width 650 × height 1300) mm

Bracket size

(length 1180 × width 650 × height 600) mm, height adjustable within 100mm

Working power supply

AC220V±10%,50Hz

Instrument noise

<65dB(A)

Weight of whole machine

about 250kg

Overall power consumption

<1500W


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