Inlet Check Valve Cartridge Back Catalog number: CTS-0621 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21192 Cartridge, BioAcquity, I2V Price on request CTS-11425 Sapphire Plunger Price on request 11-1239 Ferrule, 1/16", SS, 10/pk Price on request