EN 143 Mask Automatic Filtering Performance Tester 506

The tester is used for performance testing of filter elements, disposable masks, filter media, etc. for Filter performance tester of respirator. It’s suitable for safety testing of such products, basic filtration performance evaluation and development guidance for new products.It is applicable to the performance verification of new products , quality control of the production department, and the of material properties for the third-party testing organization, the product performance verification laboratory, and the quality and technic al supervisiondepartment, etc.

 

1. The aerosol emitted by the aerosol generator requires two treatments before reaching the tested filter material : 1. Produce aerosol salt particles by mixing with the heated gas (for salt spray). 2. Neutralize the static electricity carried by the aerosol through an electrostatic neutralizer, this treatment is to reduce the impact of particle loss and static electricity on the test results.
2. After the aerosol is processed by the above two treatments, it reaches to the surface of tested filer material at a certain flow rate (flow rate), and then the test procedure is started. For the filter efficiency test, the test time is very short, and it takes only a few seconds to complete the test. For the loading experiment, the experiment is relatively long. The particle counter or laser scattering photometer is used to measure the concentration or mass concentration of the upstream and downstream aerosol, and to calculate the filtration efficiency. At the same time,the pressure drop on both sides of the filter is measured by the differential pressure sensor.
 
Standards compliant:
NIOSH 42 CFR Part 84 Respiratory protection device;
EN 143 Respiratory protective device – particulate filters – requirements,
inspections and signs;
JMOL This protective mask standard;
GB 19083 Technical requirements for medical protective mask;
GB2626 Self-priming filter type anti-particle respirator;
GB 32610 Daily protective mask technical specifications.

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T/T, L/C

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