Acro 50 Vent Filter 0.45um pore size. Reusable. 50mm hydrophobic PTFE membrane. Polypropylene housing. 60psi maximum operating pressure. Stepped hose barb connectors fit 6.4 to 12.7mm ID tubing. Autoclavable at 121[degree]C. 20cm2 filtration area. 7.3dia.x8.2Lcm. Individually packaged.