Haoairtech brand clean room air filter use the atmospheric dust counting method.
The HEPA filter use the DOP Test: we can divide the air filter according to the different application, character,and different construction.
1: HEPA filters:
Application: purification centre air conditional system.
Characteristics: high efficiency, low resistance
2:Deep Pleats HEPA filter with big air volume:
Application: air cabinet finally filtration.
Characteristics: high efficiency, big air

1: HEPA air filter : most important is Mini-pleats HEPA air filter with Gel sealant. Glass fiber in high purification rank
(99.995%@0.3um)
2: Per-filter: beside protect the HEPA air filter and prolong the life. It also in case maintenance or construction product
debris damage the HEPA air filter.
3: Impeller: the market have two kind of impeller, one is forward anther is backward.
4: Cabinet material : The laminar air flow hood material can be is AL, GL, hard plastic or st

Haoairtech brand high temperature hepa air filter have very good quality.
But this kind of HEPA air filter special than any other type HEPA filter.
if you don’t know how to use it,it very pity to destroy the high cost HEPA filter .