Penetration rate test method of high efficiency particulate air filter at most penetrating particle size

Analyses the existing problems of high efficiency filter performance test methods in China, and provides a new test method for penetration rate of high efficiency particulate air filter at the most penetrating particle size. The method can be used to control the particle size by adding a high efficiency filter before the high efficiency filter to be tested. It can more accurately and conveniently measure the penetration rate of the high efficiency filter at the most penetrating particle size. The comparative test results show that the method is high accurate and low requirement for aerosol source, and the device is simple, portable and convenient for field measurement.