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;
Make an inquiry Ask for Remote DEMOSampling 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± 0.3μm，Geometric 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 | 60cm（length）×8.5 cm（diameter）× 3cm（width） | 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 |
