Reuseable filter housings are well suited for applications for which retireval of the membrane filter and concentration of particulate is essential. Can be used with filter medium not typically available in a preassembled filter device. Stainless steel housing can be autoclaved with membrane in place for applications requiring a sterile filter assembly. Stainless steel construction provides broad compatibility and durability for repeated cleaning and reuse. The housing accommodates a range of filter media for applications that include particulate removal, venting, HPLC sample prep, and clarification. The syringe filter holder has a threaded female Luer inlet and male Luer outlet compatible with typical syringes. Knurled edges assist in tightening and loosening the devices.