For applications with extremely high cleanliness requirements, such as in the semiconductor industry, we developed a separate clean room in the ISO class 5.
In both clean rooms - class 8 and class 5 - we carry out a corresponding particle monitoring; our particle monitoring is not only based on monitoring the room air but also includes residual dirt analysis on the finished O-rings. Therefore we can assure not only the air quality but also the cleanliness on the product itself.