How to detect the cleanliness of HEAP filter air supply

- Jan 04, 2018 -

The use of HEPA BOX is to purify the air quality, but the air is invisible to us. We can't see the quality of the air, so how to know the cleanliness of it.


Through clean air conditioning circulating fan, through HEPA air filter, medium air filter, coarse air filter, we can obtain clean air. Different clean degree matches different, air flow. Of course, Fresh air should also be added to clean room, otherwise people are very boring inside.


Active sampling and passive sampling are used to detect the effective air supply. The active sampling adopts the filtration method and the impact method. Filtration method: allows a certain amount of air to pass through an analytical filter. Impact method: Anderson sampler, lute centrifugal sampler and slit sampler can be used. Passive sampling uses descent method-the principle of diffusion of AGAR plates with suspended particles. With advanced technology, it can be detected quickly with some more precise air filtration measuring instruments.

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