The Bossmanfilter BI-POE series as a pre filter contains specially designed highly porous filter medium ( Bronze ). It ensures the retension of coarse solid and liquid particles.BI-POE Series filters by utilising various filteration mechanisms such as retention by impact,sieve effect and diffusion effect,liquid aerosols and solid particles will be retained in the filter element down to the 5 micron particle size.The Higher grade specially designed bronze filter medium guarantees not only a high load of contaminants but also the regeneration of the filter elements.