Check Valve Cartridge, 2/pk Back Catalog number: CTS-10493 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10724 Injector Needle Price on request CTS-A11381 Needle, SS, 30μL Price on request PL7100150 MarvelXACT PLS 100µm x 150mm Price on request