Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10475 Sapphire Plunger Kit Price on request CTS-3209 Syringe Seal, 250μL/2500μL Price on request CTS-5531-07 Solvent Bottle Filter, 7/pk Price on request