Lock Example - Capsule, Luer Lock V/D, 2.5" Internal filter, 0.2 micron PTFE Capsule, Standard Grade, with 1.5" Tri-Clamp fittings would be SKLF020STCTC F International Filter Products www.internationalfilterproducts.com 11070 leetwood Street, Unit B, Sun Valley, CA 91352 Phone: (818) 504-8115 Email: sales. Chat Now.