Liquid Filter Elements Protect the Integrity of Your Liquids Enhance product performance & integrity with our cartridge filter elements for liquid filtration. Products PES-WN Donaldson LifeTec™ PES-WN filters are sterile grade, pleated high-performance polyethersulfone membrane filters for liquid applications. PES-BN A Donaldson LifeTec™ PES-BN A filters are pleated high-performance polyethersulfone membrane filters, designed for final filtration to achieve microbial stabilization of highly colloidal fluids. PP100 N Donaldson LifeTec™ PP100 N filters are absolute rated depth type filters constructed of 100% polypropylene deliver superior flow rates and high throughput. PP100 CN Donaldson LifeTec™ PP100 CN filters are specifically developed for maximum safety, performance and economics in protecting bottled water and soft drinks from Cryptosporidium and Giardia contamination. PP N Donaldson LifeTec™ PP N filters deliver outstanding flow rates and high throughput, with nominal submicron particulate retention and high dirt holding capacity. PP-TF N Donaldson LifeTec™ PP-TF N filters have polypropylene construction and provide broad chemical compatibility and low extractable levels in a wide range of fluids and applications. PP-FC 100 Constructed with proprietary melt blown microfiber technology using 100% pure polypropylene filter media, PP-FC 100 filter elements have exceptional dirt-holding capacity. PP-FC The PP-FC uses a graded density filter matrix which captures particles throughout the entire filter depth. P-SM N The P-SM N filter element consists of a regenerable, pleated filter matrix with stainless steel outer guard and end caps. P-GSL N The Donaldson P-GSL N filter element is constructed of 100% stainless steel and often used in high-temperature liquid applications. PP-Q Donaldson PP-Q high-performance, high-value nominal polypropylene elements are designed for use in a wide range of applications. PP100-Q Donaldson PP100-Q high-performance, high-value absolute polypropylene elements are designed for use in a wide range of applications. Competitive Fit Filters Donaldson uses industry leading technology and offers liquid filter elements for Donaldson liquid housings as well as replacement filters for other popular brands.