Needle Kit, 15 µL with Needle Seat and Needle Guid Back Catalog number: CTS-21287 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request CTS-21164 Rotor Seal, 6 port, Rear Price on request 11-1599 Check Valve Assembly, Outlet Price on request