Effective solid particle filter: The BOGE F..FP depth filter removes solid particles down to 3 microns with a separation efficiency of 99.95% from compressed air or pressurised nitrogen gas. Highly effective microfibre fleeces have a high capacity to absorb dirt, while at the same time providing a consistently low differential pressure. A pleated depth filter increases the filter area by a factor of 4.5 compared with conventional elements. The design of the filter housing and the filter element is optimised to allow the flow to have the lowest possible pressure resistance.