LOFMEM filter cartridges are made from Polyethersulfone (PES) and Teflon (PTFE) membranes under ISO 9001 quality control standards to provide absolute retention consistency. LOFMEM filter cartridges are used for final filtration of wine and beverages, ultrapure water filtration, DI water, photo resists, pharmaceutical intermediates, strong acidsbases, compressed gases and fermentation air. LOFMEM filter cartridges are manufactured in an ISO Class 7 cleanroom and 100% flushed. LOFMEM filter cartridges have 7 ft2 to 8 ft2 surface area with an absolute retention range from 0.03 m to 1.00 m.