GE Osmonics Hytrex unique one-step manufacturing process continuously extrudes and thermally bonds pure polypropylene microfibers into a complex filter matrix. Microfilaments plus precise control maximize the positive filtration characteristics of graded density, tight micron cutoffs and maximum void area with millions of tortuous paths. This fully automated manufacturing process assures consistent quality, filter to filter, year in and year out. New thermal and vacuum finishing procedures produce exceptionally clean filters imprinted for easy identification in the field.