Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-5531-05 Solvent Bottle Filter, 5/pk Price on request 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request 11-4116 Sample Needle Kit, 15µL Price on request