Cartridge Check Valve System Kit Back Catalog number: CTS-21011 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-11367 Piston, Low Pressure Price on request CTS-A11381 Needle, SS, 30μL Price on request PL7050350 MarvelXACT PLS 50µm x 350mm Price on request