Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-5559 Priming Syringe Needle Price on request CTS-10328 Optics Cover Window Price on request PS7075350 MarvelXACT™ PEEKsil™ 75µm ID x 350mm Price on request