Many processes related to plasma technology do not allow for any contamination with particles from the ambient. Such processes need to be executed in a cleanroom.
Cleanrooms need to be isolated perfectly from the ambient, special ventilation systems and air conditioning with clean air filters. The air pressure in cleanrooms is allways above the level of the ambient so that flow of contaminated air into the cleanroom is prevented.
Diener electronic facilities include a cleanroom certificated according to ISO 14644-1 which is used to execute plasma treatment of microelectronic components, medical components and components used for chemical analytics.