Frantz Filter has created a melt-blown filter that has a graduated stage process that filters down to 2 microns, yielding true depth filtration. The filter media has been created from 100% polypropylene and lasts two to three times longer* than cellulose media. Synthetic media has two other advantages – it has more consistent flow rate and holds its form better than cellulose-based filter media. *Duration may vary depending on application.