High filtration efficiency is the prerequisite for high air quality while a low pressure drop helps to save energy. With this in mind, Atlas Copco presents its latest generation of filters: DD+, PD+, DDp+ and PDp+ filters. New micro-glass fiber filter media and a six layer wrapped construction ensure a high purity filtration and a guaranteed performance over the filter lifetime. Moreover, the performance is independent on the relative humidity. The perforated stainless steel metal cores were enhanced to ensure ultimate mechanical strength and drastically reduce the risk of implosion. Compared to the previous generation the pressure drop of the new DD+ and PD+ filters for the filtration of oil aerosols has been reduced and at the same time the oil carry over decreased by more than 20%. DDp+ and PDp+ Filters for the filtration of solid particles have extremely high particle removal efficiencies of 99,92 % (DDp+) and 99,98 % (PDp+).