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-11091 ACQUITY BSM Performance Maintenance Kit Price on request CTS-5531-07 Solvent Bottle Filter, 7/pk Price on request CTS-10942 Rotor Seal Price on request