HEPA (High Efficiency Particulate Air filter) and ULPA (Ultra Low Penetration Air filter) are typically used to clean up the ventilation air for clean room applications like electronic industry, hospitals and also protection of the environment. For such challenging application which could influence health of people and quality of goods, 100 % control of produced HEPA/ULPA filters has to be carried out to verify/confirm the absence of leaks according to the standard EN1822/ISO29463.

Leak testing each filter leaving the production demands an automated and rapidly measuring solution.

Topas GmbH developed a highly automated filter scanning system which combines flexibility and speed in a suitable way. The system itself adjusts the correct dilution and the aerosol amount as well as the correct aerosol material, according to the filter type properties and runs the highly automated test routine. A unique solution for each customer guarantees continuous development starting with the project and includes practically feedback.

The technical implementation of both, standard requirements and customer requirements, will be described in detail as state of the art in the paper...