Needle Guide Back Catalog number: 11-2591 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21169 Assy, Capillary, 90mm x 0.17mm ID, w/Fittings Price on request CTS-1106 Inlet Tube Assembly Kit Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request