Performance Autosampler Needle Back Catalog number: CTS-7550 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10560 Seal Wash Plunger Seal, Alliance, 2/pk Price on request 11-3832 Wash Seal, PE, 1220, 1260, 1290 Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request