Seal Extension Tube Back Catalog number: 11-2569 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-21591 PM Kit, G4226A Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request