Seal, Wash Back Catalog number: 11-1603 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request PL7050350 MarvelXACT PLS 50µm x 350mm Price on request CTS-0621 Inlet Check Valve Cartridge Price on request