ACQUITY I-Class SM-FTN Performance Maint. Kit,2890 Back Catalog number: CTS-21240 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request 11-4121 Ceramic Plunger Holder Assembly, LC-10ADvp Price on request 11-3795 Sapphire Plunger w/Holder Price on request