After each change of the HEPA filter, it is necessary to conduct a test.
Indeed, the HEPA filters manufactured EN 1822 have a thorough inspection but the risks incurred during transportation and during installation are to be considered.
Only a control test of the particles or an integrity test provides a guarantee of cleanliness class.
Operating rooms of accredited Health facilities MUST have particulate control and bacteriological control.
The CLIN determines the frequency of qualification controls. It is usually due once a year and always after the change of HEPA filters.
The spare filters from the power plants used for air processing are not subject to the management of infectious hospital waste.
INTERFILTRE is equipped to achieve this control of particles which leads to a qualification report of the rooms.

Using laboratory equipment, we control the air pollution for industrial premises by measuring weight in mg/m3.

Equipped with a pear shape tube, the emission of smoke allows us to visualize the flow of air leakage, and thereby controlling pressure or vacuum of the tested room.

INTERFILTRE offers on site analysis of gases, acids, solvents, and so forth. The Drager method is used to identify reactants; this better helps in selecting the appropriate equipment according to the regulations.