Flow rates                         Nom. retention rates (nom.) 5, 10, 20, 30, 75, 100, 125 and 200 µm     Absolute retention rates (abs.) 2, 3, 5, 7, 10, 12 and 15 µm     Deliverable cartridge lengths 9 3/4", 10", 19 1/2", 20", 29 1/4", 30", 39"*   Overview brochure PDF-DOWNLOAD . Special fabrications are in all lengths up to 50" available I all materials FDA are listed  Suitable filter housings Profit from our long-standing experience with the interpretation of filter systems! We lay out your filter according to economic and economic criteria free of charge.