These Corning® syringe filters have acrylic copolymer housings, female Luer lock inlets and male Luer slip outlets. SFCA-PF (surfactant-free cellulose acetate with prefilter) membranes provide the lowest protein binding and have an integral glass fiber prefilter for extra filtering capacity 100% integrity tested, sterile and nonpyrogenic and noncytotoxic Manufactured in accordance with ISO 9001 standards