【Scope of application】 Respiratory mask leakage test is used to test the filtration efficiency and protective effect of respiratory masks and protective masks such as KN95 masks, protective clothing, daily protective masks, and self-priming filter anti-particle masks. 【Relevant Standards】

Test standard reference: GB 2626 Respiratory protection Self-priming filtration anti-particulate respirators EN149:2001+A1:2009 Requirements for filter half masks for particle protection of respiratory protection devices GB/T 29511 Protective clothing Solid particulate matter chemical protective clothing

【Scope of application】 Respiratory mask leakage test is used to test the filtration efficiency and protective effect of respiratory masks and protective masks such as KN95 masks, protective clothing, daily protective masks, and self-priming filter anti-particle masks. 【Compliance with standards】 Test standard reference: GB 2626 Respiratory protection Self-priming filtration anti-particulate respirator EN149:2001+A1:2009 Requirements for Filter Half Masks for Particle Protection in Respiratory Protective Devices GB/T 29511 Protective clothing – Chemical protective clothing for solid particulate matter [Instrument specialdot】 1. Efficiency detection: The imported well-known TSI brand high-precision photometer is used to detect the concentration in the chamber and the concentration in the mask respectively to ensure the accuracy, stability, speed and effectiveness of sampling. 2. Testing compartment: The testing compartment should be large enough, have sufficient observation range, and be able to meet the specified actions (personnel upright, pedal movement, rotation in place and other action spaces). 3. Aerosol generation: salt and oil tests can be carried out on the same instrument, automatically switched, without manual operation, to ensure the rapid and stable adjustment of the mist concentration. 4. Test results: equipped with professional computer software, the test results are directly displayed on the interface for printing, and the data can be saved. 【Technical Parameters】 1. Horizontal pedal transmission shaker: running speed (6±0.5) km/h 2. Sampling holes: four in total, ball valve control, with hose 3. Sampling pump: adjustment range 0.05L/min~4L/min, flow fluctuation ±0.20L/min 4. Lighting: equipped with 2 LED fluorescent tubes 5. Aerosol generator Oily (media: DEHS, corn oil, paraffin oil) Aerosol concentration: 20~30mg/m³ (adjustable) Particle size distribution: (0.02~2) μm Median particle size: 0.3 μm Salinity (Medium: NaCl) Aerosol concentration: 4~12mg/m³ (adjustable) Particle size distribution: (0.02~2) μm Median particle size: 0.6 μm 6. Photometer measurement range: (0~200) mg/m³ 7. Test temperature: (25±5)°C 8. Relative humidity: (30±10)% 9. Overall dimensions: 1800×1800×2000mm Control box: 670×590×1000mm 10. Weight: 200kg 11. Air source requirements: 0.5MPa 12. Power source: AC220V 50Hz 300W