HEPA Filters

Active and passive HEPA filter for self cleaning HEPA filter units applied for dust recovery.

I. HEPA filters applied in clean room areas for atmospheric air

The original HEPA filters
were designed in the 1940s in the US and were first used in the Manhatten Project to prevent the spread of airborne radiactive contaminants.

Today in pharmaceutical production lines within clean rooms and laminar flow ceilings
HEPA filters are today well known and standard components.

HEPA Filters (High Efficiency Particulate Airfilters)
are cassettes designed to filter at least 99.97% of all dust particles ranging from 0.1 – 0.3 µm particle size out of dust laden air especially such as hazardous to health and toxic dusts. Particles that are larger or smaller are filtered with even higher efficiency.

MPPS (Most Penetrating Particle Size)
According to generelly known filter effects these dusts ranging from 0.1 – 0.3 µm size are the ones which are most difficult to filter.

DEHS (Di -2- Ethylhexyl- Sebacat) Testing
In regard to the efficiency of these particle sizes HEPA filters are standardly tested and their efficiency is proven by DEHS tests.

II. HEPA filters applied in dust recovery filter units exposed to high dust loads

The original active and passive HEPA filters
were designed in the early 70s by Mr Andrasfalvy sen. the inventor and former patentholder of the self cleaning HEPA filter system.

Today
Containment Technology provides exclusively the original Hepa filters designed for this application.
This means 35 years of experience andl ongest know how for customer´s safety.

“Purchasing with us is easy, secure and efficient.”

Technically
they are equivalent to the HEPA filters described above.
However, they are

• Exposable to high dust loads up to 150g/m3h
• They can be exposed to pressure difference up to 3.500 Pascals
• They withstand the stress of cleaning cycles.