Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended PL7025350 MarvelXACT PLS 25µm x 350mm Price on request 11-4116 Sample Needle Kit, 15µL Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request