Cartridge Check Valve System Kit Back Catalog number: CTS-21011 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-21109 Capillary, 600mm x 0.17mm ID Price on request CTS-21480 Check Valve, Cartridge Price on request CTS-10772 Pump Seals, Low Pressure Price on request