Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4052 Needle Seal, SIL-30AC, SIL-30ACMP Price on request CTS-A11381 Needle, SS, 30μL Price on request CTS-A11145 Tube Assy, System Outlet, SDS Price on request