Mask filtration efficiency tester

The main purpose:


　　 Mask filtration efficiency tester is used to test the protection effect and filtration efficiency of daily protective masks and respirators against particulates.

　　 Application range:

　　 is suitable for medical device inspection centers, safety protection inspection centers, labor protection inspection centers, drug inspection centers, disease prevention and control centers, hospitals, masks and respirator manufacturers, etc.

　　Applicable standards:

　　 GB 32610-2016 Technical Specification for Daily Protective Masks

　　 GB 2626-2019 Respiratory protection products-Self-priming filter anti-particulate respirator

　　 GB 19082-2009 Technical requirements for medical disposable protective clothing

　　 GB 19083-2010 Technical requirements for medical protective masks

　　YY 0969-2013 disposable medical mask

　　YY 0469-2011 medical surgical mask

The main parameters:

　　 1. The particle size distribution produced by the aerosol generator: 0.02-2μm;

　　 2. Aerosol concentration detection device:

　　Concentration ≤30mg/m3, detection dynamic range: 0.0-999.9mg/m3, accuracy 1%;

　　Sampling frequency: ≥1times/min, and equipped with a device to neutralize the charge of the aerosol generator.

　　 3. Test head mold: national standard head mold;

　　4. Breathing simulator: sinusoidal air flow, frequency 20 times/min, breathing flow (30±1) L/min, breathing speed adjustable;

　　 5. Detection range of filtration efficiency: 0-99.999%;

　　 6. Power supply: AC220V 50Hz.

 

main part:

　　 1. Aerosol generator

　　Nacl (KCl) aerosol generator, DEHS aerosol generator.

　　 2. Photometer

　　 is mainly used to monitor the upstream and downstream particle concentration of the tested filter material and obtain the efficiency of the tested filter material.

　　3. Differential pressure sensor

　　 is mainly used to test the pressure difference (or resistance) of the tested filter material under a certain test flow.

　　4. Stainless steel fixture

　　 is mainly used for the compression and sealing of the tested filter material.

　　 5. Exhaust fan

　　 is mainly used for the test flow through the filter material, the flow is stable, green and energy-saving, and low vibration and noise.

　　6. ​​Electrical control and software

　　Equipment circuit control and operation, software calculation and data processing, upstream concentration stability judgment, operation control, parameter setting.

mask bacterial filtration efficiency tester
dry fallen wadding tester
Textile air resistance tester

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