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Masks Bacterial Filtration Efficiency Tester TN145-1

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Masks Bacterial Filtration Efficiency Tester is used to determine the bacterial filtration efficiency (BFE) of medical face masks, surgical face masks, to identify the protective performance from being exposed to bacterial airborne environments, tester can conduct the tests defined in EN 14683, ASTM F2100, ASTM F2101, YY 0469, YY 0969.

Description

Application

Masks Bacterial Filtration Efficiency Tester is used to determine the bacterial filtration efficiency (BFE) of medical face masks, surgical face masks, to identify the protective performance from being exposed to bacterial airborne environments, tester can conduct the tests defined in EN14683, ASTM F2100, ASTM F2101, YY 0469, YY0969.

The bacterial suspension is pumped to the nebulizer, the aerosol will be pushed into the aerosol chamber then delivered into two sets of (Anderson) sieve samplers, one with testing specimen, another without specimen in order to compare the different results.

Designed with two sets of Anderson sieve samplers it is possible to get the results with and without testing specimen at the same time, reduce the bias to the minimum, and the machine has a embed clear 3-level (disinfection liquid, purified water, airflow) cleaning system to ensure the safety after the tests.

Features of Masks Bacterial Filtration Efficiency Tester

  • 10.4-inch high brightness color touch screen, easy to operate.
  • With USB interface, supporting USB data transmission.
  • With leakage protection switch, the negative pressure test system and the front opening and closing glass door, that can protect operator safety and provide more convenient way for operator to observe.
  • Double six stage Anderson sample, compare sampling tests, test result is high accuracy.
  • The flow of peristaltic pump and the flow rate of microbial aerosol generator can be set.
  • The inner layer of the cabinet is made of stainless steel, and the outer layer is sprayed with cold-rolled sheet, more stable and reliable.

Specifications of Masks Bacterial Filtration Efficiency Tester

Main parametersScopeResolutionMPE (Maximum
Permissible Error)
Sample Flow Rate of A28.3L/min0.1L/min±2.5%
Sample Flow Rate of B28.3L/min0.1L/min±2.5%
Spray flow(8~10)L/min0.1L/min±5.0%
Peristaltic pump flow(0.1~3.0)mL/min0.1mL/min±2.5%
Front pressure of flow
meter A
(-20~0)kPa0.01kPa±2.5%
Front pressure of flow
meter B
(-20~0)kPa0.01kPa±2.5%
Front pressure of front
pressure
(0~300)kPa0.1kPa±2.5%
Negative pressure
aerosol chamber
(-90~-120)Pa0.1Pa±2.0%
Operation temperature(0~50)℃
Cabinet negative
pressure
(-50~-200)Pa
Data storage capability>100000 groups
Characteristics of efficiency air high filterFilter efficiency for particles is above 0.3um ≥ 99.99%
Mean mass diameter of
aerosol
Average particle diameter is (3.0 ± 0.3)μm, geometric
standard deviation ≤ 1.5
Captured particle size of
Two-way 6-stage
Ⅰ level > 7 microns, Ⅱ level (4.7 ~ 7) microns, Ⅲ level (3.3 ~ 4.7) microns, Ⅳ level (2.1 ~ 3.3)
Anderson samplermicrons, Ⅴ
microns (1.1 ~ 2.1), level Ⅵ microns (0.6 ~ 1.1)
Aerosol chamber
specifications
(length 600× diameter 85× thickness 3) mm
Total number of positive
quality control sampler particles
(2200±500) CFU/mL
Ventilation flow rate of
negative pressure cabinet
≥5m3/min
Dimensions of negative
pressure cabinet door
(length 1000× width 730) mm
Host size(length 1180× width 650× height 1300) mm
Stent size(length 1180× width 650× height 600) mm, height
adjustable within 100mm
PowerAC220 V±10%,50 Hz
Weight250 kg
Overall power
consumption
<1500W

Standards of Masks Bacterial Filtration Efficiency Tester

EN 14683ASTM F2100ASTM F2101YY 0469YY 0969

 

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