No matter what quantity of compressed air needs to be treated only the quality demands determine the components of your purification equipment. With a centralized purification device the entire compressed air generated has to be purified to meet the quality demands of the most sensitive application – regardless of the fact that this only consumes 1% or even less of the air. Local compressed air treatment with Ultrafilter FRL-units supplies each individual application exactly with the air quality required and therefore avoids costly super qualification of compressed air for low demand purposes.