BFE mask bacteria filtration efficiency tester FX-0469

The mask bacterial filtration efficiency tester adopts dual gas channels to simultaneously compare sampling methods, which improves the accuracy of sampling. It is suitable for performance testing of mask bacterial filtration efficiency by metrological verification departments, scientific research institutes, mask manufacturers, and other relevant departments.

The main purpose:

The mask bacterial filtration efficiency tester adopts dual gas channels to simultaneously compare sampling methods, which improves the accuracy of sampling. It is suitable for performance testing of mask bacterial filtration efficiency by metrological verification departments, scientific research institutes, mask manufacturers, and other relevant departments.

Applicable standards:

YY0469-2011 "Technical Requirements for Medical Surgical Masks" Appendix B Bacterial Filtration Efficiency (BFE) Test Method B.1.1.1

Q / 0212 ZRB003-2011 Medical surgical mask bacterial filtration efficiency

ASTMF2100, ASTMF2101, European EN14683

The main parameters of the mask bacterial filtration efficiency tester:

1. Sampling flow rate of channel A: parameter range, 28.3L / min; resolution, 0.1L / min; maximum allowable error: better than ± 2.5%;

Channel B sampling flow rate: parameter range, 28.3L / min; resolution, 0.1L / min; maximum allowable error: better than ± 2.5%;

2. Spray flow: parameter range, (8 ～ 10) L / min; resolution, 0.1L / min; maximum allowable error: better than ± 5.0%;

3. Flow rate of peristaltic pump: parameter range, (0.006 ～ 3.0) mL / min; resolution, 0.001ml / min; maximum allowable error: better than ± 2.5%;

4. Front pressure of A-channel flowmeter: parameter range, (-20 ～ 0) kPa; resolution, 0.01kPa; maximum allowable error: better than ± 2.5%;

Front pressure of B-channel flowmeter: parameter range, (-20 ～ 0) kPa; resolution, 0.01kPa; maximum allowable error: better than ± 2.5%;

5. Front pressure of spray flow meter: parameter range, (0 ～ 300) kPa; resolution, 0.1kPa; maximum allowable error: better than ± 2.5%;

6. Negative pressure of aerosol chamber: parameter range, (-90 ～ -120) Pa; resolution, 0.1Pa; maximum allowable error: better than ± 2.0%;

7. Data storage capacity:> 100000 groups;

8. High-efficiency air filter characteristics: the filtration efficiency of particles above 0.3um is ≥99.99%;

9. Mass median diameter of aerosol generator: average particle diameter (3.0 ± 0.3) μm, geometric standard deviation ≤1.5.

Technical characteristics:

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

2. Built-in peristaltic pump in negative pressure cabinet, A, B two-way six-level Andersen (Andersen);

3. The flow rate of the peristaltic pump can be set;

4. Special microbial aerosol generator can be set for night spray flow rate, good atomization effect;

5. Embedded high-speed industrial microcomputer control;

6.10.4 inch industrial-grade high-brightness color touch display screen;

7.USB interface, support U disk data transfer;

8. Built-in high-brightness lighting lamp;

9. The inner layer of stainless steel in the cabinet is integrally formed, the outer layer is sprayed with cold-rolled plates, and the inner and outer layers are insulated and flame retardant;

10. Detachable bracket, the height of the bracket is adjustable, supporting and moving casters.