In optical manufacturing, for example, the quality of the optics in a dark room is checked using a light source. These test rooms must be very dark in order to detect defects in the surfaces. If this also has to be done under cleanroom conditions, it is easy to black out walls, ceilings and floors. However, the filter surfaces of the HEPA filters used are always white. This patented solution reduces light reflection at the filter surface by 95%.

Special solution with chemical filtration
In museums it is often necessary to protect particularly valuable exhibits not only from particles, but also from chemical influences. Since a very compact design is also important in showcases, this was implemented in a module, which contains chemical filters for a wide variety of harmful airborne compound, in addition to the particle filter.

With this a high air volume in a sufficient purity at low running costs is achieved. However, the use of these modules is not limited to the automotive industry.
The automotive industry is currently one of the biggest drivers of developments in the field of technical cleanliness. The main focus here is on partial cleanliness. However, the cleanliness produced must be maintained by an appropriate environment. Surely one does not necessarily speak today of the extensive use of pure areas in the automobile industry, but the term clean area is already in all heads. Since cleanrooms that do not reach the cleanroom level are primarily concerned with reducing running costs, there are so-called Clean Air Modules that are equipped with a high-quality F9 pre-filter instead of a particulate air filter.