Acrodisc Housing: 13 mm: Polypropylene 25 and 32 mm: Modified acrylic 37 mm: Polypropylene Serum Acrodisc Housing: ABS Pore Size 0.1, 0.2, 0.45, 0.8, 1.2, and 5 µm Effective Filtration Area 13 mm: 1.0 cm 2 25 mm: 2.8 cm 2 32 mm: 5.8 cm 2 37 mm: 7.5 cm 2. Inlet/Outlet Connections Female luer lock inlet, male slip luer outlet Typical Hold-Up Volume