Below is a list of Membrane Filtration manufacturers from Northbrook, Illinois. Membrane filtration employs thin, microporous films or sheets to trap or retain particulate impurities from fluid or gas process streams that are pushed or pulled through them. With particulate removal rates of over 99%, these semi-permeable materials rival ULPA and HEPA quality filters and are preferred in a number of applications. This compact filtration system is used in the electronics, research, sanitation, medical, ventilation, biopharmaceutical, automotive, manufacturing, water treatment, agriculture, food and chemical processing industries.