Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4122 PTFE Diaphragm, LC-30AD/i-Series, 2/pk Price on request CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request 11-3332 100μL Syringe for WPS-3000 Series Price on request