A good filter system can help improve the quality of the product. If the filters can remove almost all of the particulate matter, then there will be a better opportunity for high quality product. An example would be in the paint operation of an automotive factory. If you have a filter system allowing particulate matter through the filter, then the particulate matter could end up on the painted surface. This situation could result in a defect that would need to be reworked.

Another example could be a cleanroom. The goal in a cleanroom is to have as sterile an area as possible in which to handle contagions, so those contagions do not escape into the outside world.