Small flow element (SFE) filters can be specified with a variety of adapters for installation into new housings or retrofit applications. A specialized SK adapter version is also available for SKR filter housings, or retrofit of competitive housings that require a skirt-flange sealing mechanism. The filters are available in lengths of 2.5 in. (6.4 cm) or 5 in. (12.7 cm). Media options available for specification include PVDF, PES, PP, PTFE, borosilicate glass microfiber, PP microfiber, and PP depth. Filtration ratings can be specified from 0.04 to 99 μm. SFE filters are specifically designed for point-of-use filtration and small batch processing of liquids and gases, where flow requirements are less than 3 gpm (11 L min-1) or 60 scfm (102 Nm3hr-1).