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-10600 Check Valve Cartridge, 2/pk Price on request CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request CTS-00230-02 O-Ring, PTFE Price on request