Syringe Filters with Luer Lock Inlet, Restek. Filters Syringe Filters. Syrings filters have guaranteed leak-tight connections with luer lock inlets. Variety of filter types, porosities, and diameters. Color-coded for easy identification. Rugged polypropylene housing. Autoclavable to 121°C for 15 minutes. Quantity break pricing for greater savings.