Outlet Check Valve Back Catalog number: 11-4063 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-21109 Capillary, 600mm x 0.17mm ID Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-21422 Needle Seal Kit Price on request