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Mask bacterial filtration eficiency tester
Mask bacterial filtration eficiency tester

 It is used to test the percentage of the mask material to filter the suspended particles containing bacteria under the specified flow rate. This method improves the accuracy of sampling, and is suitable for the performance test of the bacterial filtration efficiency of the medical surgical mask by the metrological verification department, scientific research institute, medical mask manufacturer and other relevant departments.

 

Technology advantage:

1. Negative pressure experiment system to ensure the safety of operators;

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

3. The flow of peristaltic pump can be set;

4. The microorganism aerosol generator can be set at night spray flow, and the atomization effect is good.

5. Embedded high speed industrial microcomputer control;

6. 10.4-inch industrial high brightness color touch screen;

7. USB interface, supporting USB data transfer

8. Cabinet built-in high brightness light

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

10. Heat preservation and flame retardant between inner and outer layers;

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

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Sampling flow of channel A

28.3L/min (parameter range) 0.1L/min (resolution) is better than ± 2.5% (accuracy)

Sampling flow of channel B

28.3L/min (parameter range) 0.1L/min (resolution) is better than ± 2.5% (accuracy)

Spray flow rate

(8-10) L/min (parameter range) 0.1L/min (resolution) is better than ± 2.5% (accuracy)

Peristaltic pump flow

(0.006-3.0) mL/min (parameter standard rate) 0.001ml/min (score better than ± 2.5% (accuracy)

Front pressure of A-way flowmeter

(- 20 0) kPa (parameter range) 0.01kPa (resolution) is better than ± 2.5% (accuracy)

Front pressure of B-way flowmeter

(- 20 0) kPa (parameter range) 0.01kPa (resolution) is better than ± 2.5% (accuracy)

Front pressure of spray flowmeter

(0-300) kPa (parameter range) 0.1kPa (resolution) is better than ± 2.5% (accuracy)

Ambient temperature

(- 40 99) ℃ (parameter range) 0.1 ℃ (resolution) is better than ± 2.5% (accuracy)

Negative pressure of air mist chamber

(- 90 ~ - 120) Pa (parameter range) 0.1Pa(resolution) is better than ± 2.0% (accuracy)

Cabinet negative pressure

-50-200Pa

Test tube specification and quantity of vortex mixer

Φ16×150mm Test tube, eight

Characteristics of high efficiency air filter

Filtration efficiency of particles above 0.3um ≥99.99%

Mean mass diameter of aerosol generator

3.0± 0.3μmGeometric standard deviation≤1.5

Integrated level 6 Anderson

Particle size captured by sampler

Class I > 7 μ m, class II (4.7-7) μ m, class III (3.3-4.7) μ m, class IV (2.1-3.3) μ m, class V (1.1-2.1) μ m, class VI (0.6-1.1) μ M

Specifications of air mist chamber

60cmlength×8.5 cmdiameter× 3cmwidth

Total number of particles in positive quality control sampler

2200±500cfu

Negative pressure cabinet ventilation flow

≥5m3/min

Negative pressure cabinet size

W×D×H

755×400×990mm

Host size

W×D×H

1200×630× 2100 mm

Instrument noise

<65dB(A)

Operating weight

About 150kg

Power waste

<1500W

 

 


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