Reusable stainless steel holders accommodate 13mm or 25mm filters. Luer lock fittings connect to a standard syringe. PTFE gaskets and O-ring permit the membrane to be autoclaved without the filter sticking to the holder. Excellent for removal of particulates in solution, nucleic acid and protein analysis, small volume filtration of cytology specimens and solvent filtration of HPLC liquids. Connections are female luer inlet and male luer nozzle outlet.