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-21163 Rotor Seal, 2-Groove Price on request 11-4133 Gold Plunger Seal Price on request CTS-A11151 Needle Assembly, PEEK™ Price on request