WKS-1010 Mask Bacterial Filtration Efficiency (BFE) Tester is used to test the percentage of the mask material to filter out the suspended particles containing bacteria under the specified flow rate. It is suitable for the performance test of the bacterial filtration efficiency of medical surgical masks by metrological inspection departments, scientific research institutes, medical mask manufacturers and other related departments.
Standard:
ASTM F2100 “Standard Specification for Performance of Materials Used in Medical Face Masks”
YY0469-2011, YY/T 0969-2013
Specification:
| 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 | ||
Features:
- Negative pressure experiment system to ensure the safety of operators;
- Negative pressure cabinet built-in peristaltic pump, integrated 6 Grades Andersen;
- The flow rate of the peristaltic pump can be set;
- The special microbial aerosol generator bacterial liquid spray flow rate can be set, and the atomization effect is good;
- Embedded high-speed industrial microcomputer control;
- 10.4 inch industrial grade high-brightness color touch screen;
- USB interface, support U disk data transfer;
- Built-in high-brightness lighting lamp in the cabinet;
- Built-in leakage protection switch to protect the safety of operators;
- Heat insulation and flame retardant between the inner and outer layers;
- The front opening and closing glass door is convenient for the experimenter to observe and operate;
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