Piston Assembly, TZP Back Catalog number: 11-1597 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10686 Needle Seal, Vespel® Price on request CTS-21129 Check Valve, Ti, Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request